{"title":"Shallow Mount Subwoofer","description":"\u003cdiv class=\"ai-collection-block\"\u003e\n\n\u003ch2\u003eWhat Makes a Shallow Mount Subwoofer Different\u003c\/h2\u003e\n\n\u003cp\u003eA shallow mount subwoofer (also called a slim, flat, or low-profile sub) is a driver engineered for reduced mounting depth. Where a conventional 10 inch sub typically needs 5 to 7 inches of depth behind the baffle, a shallow 10 needs roughly 2 to 4 inches. The motor and magnet are reworked to sit closer to the cone or partially within the basket, and the suspension is tuned to allow useful excursion in a compressed package.\u003c\/p\u003e\n\n\u003cp\u003eThe trade-off is honest. A shallow sub will not match a deep-basket competition driver for raw SPL or extreme excursion. What it will do is produce clean, controlled low end in spaces where a conventional sub physically cannot mount. For most under-seat truck installs, sport sedans, and stealth builds, that is the correct trade.\u003c\/p\u003e\n\n\u003ch2\u003eWhere Shallow Mount Subs Fit\u003c\/h2\u003e\n\n\u003cp\u003eThe most common applications are under the rear seats of pickup trucks, behind the rear seat in extended cab and crew cab trucks, in custom kick panels, in molded fiberglass trunk enclosures, and in factory sub locations on vehicles that came with shallow OEM drivers. Shallow subs are also the right call for leased vehicles where a permanent box install isn't an option.\u003c\/p\u003e\n\n\u003cp\u003eIf you're searching for an under-seat truck sub or a shallow 12 for a Ram, F-150, Silverado, or similar full-size, every in-stock driver on this page will work in a properly sized sealed enclosure. Send vehicle and depth measurements to our tech team if you need help confirming clearance.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-spec\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eQuick Reference: Mounting Depth\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003e8 inch shallow:\u003c\/span\u003e 2.5 to 3.5 inches\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003e10 inch shallow:\u003c\/span\u003e 3 to 4 inches\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-spec-key\"\u003e12 inch shallow:\u003c\/span\u003e 3.5 to 4.5 inches\u003c\/p\u003e\n\u003c\/aside\u003e\n\n\u003ch2\u003eThe Collection at a Glance\u003c\/h2\u003e\n\n\u003cp\u003eThe lineup spans four brand strategies, each suited to a different build priority.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eValue tier ($148 to $220):\u003c\/strong\u003e Prodigy NB3-10 and NB3-12, Arc Audio ARC8. Clean, well-engineered shallow drivers at price points that work for most builds. The Prodigy NB3 line punches above its price tier in sealed configurations.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eSQ-focused tier ($300 to $520):\u003c\/strong\u003e Arc Audio A10 and A12, JL Audio 10TW3-D4. The drivers most builders should evaluate first when sound quality matters as much as fitment. JL Audio's TW3 is the long-standing benchmark for sealed-box shallow performance. Arc Audio's A series prioritizes musical accuracy with the headroom to perform under load.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eHigh-output specialty ($600 to $800):\u003c\/strong\u003e Alpine RSW10D4 and Wavtech thinPRO 10 and 12. The Wavtech thinPRO line is purpose-built around the shallow-mount constraint, delivering 750W RMS in 2.9 to 3 inch mounting depths. Most shallow competitors deliver 200 to 400W at 3 to 4 inches. The thinPRO nearly doubles that power handling in a thinner package. The Alpine RSW10D4 brings serious output capability with Alpine's reliability track record.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eAudiomobile EVO line:\u003c\/strong\u003e Currently sold out across the EVO 2408, 2410, and 2412 shallow drivers. Contact us for restock notifications or to discuss alternatives that fit your build.\u003c\/p\u003e\n\n\u003ch2\u003eChoosing the Right Shallow Mount Subwoofer\u003c\/h2\u003e\n\n\u003ch3\u003eMounting Depth and Diameter\u003c\/h3\u003e\n\u003cp\u003eMeasure the available depth before anything else. Subtract a quarter inch for clearance and air movement behind the cone. Then match diameter to the depth and air volume you have to work with. 8 inch shallow subs fit in the tightest spaces and pair well in dual configurations for under-seat builds. 10 inch shallow subs are the most popular size, balancing output and footprint. 12 inch shallow subs deliver the deepest extension when there's room behind a rear seat or in a low-profile trunk box.\u003c\/p\u003e\n\n\u003ch3\u003ePower Handling and Impedance\u003c\/h3\u003e\n\u003cp\u003eMatch the subwoofer's RMS rating to your amplifier's RMS output at the final wired impedance. Peak ratings are not useful for system design. Most shallow subs are offered in dual voice coil 2 ohm and dual voice coil 4 ohm versions to give you wiring options when running multiple drivers. If you're running one shallow sub on a monoblock, the DVC 2 ohm wired in series for a 4 ohm load is usually the cleanest match for amplifier efficiency without driving a 1 ohm load.\u003c\/p\u003e\n\n\u003ch3\u003eEnclosure Type\u003c\/h3\u003e\n\u003cp\u003eSealed is the default recommendation for shallow mount subs. Sealed enclosures are compact, produce tight transient response, and tolerate a wider range of music. Ported enclosures can produce more output at the tuning frequency but require significantly more internal volume, which usually defeats the reason you chose a shallow driver in the first place. If you need a ported shallow build, plan the box around the manufacturer's published specs and don't compromise on internal volume to make it fit. Audio Intensity builds \u003ca href=\"https:\/\/audiointensity.com\/collections\/subwoofer-enclosures\"\u003eCNC-cut Proline X enclosures\u003c\/a\u003e matched to specific shallow drivers if you want to skip the design work.\u003c\/p\u003e\n\n\u003caside class=\"ai-callout-cta\"\u003e\n\u003cp class=\"ai-callout-label\"\u003eNeed Help With Fitment?\u003c\/p\u003e\n\u003cp\u003eTalk to an SQ-judge tech directly. We'll match the right driver and enclosure to your vehicle.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"ai-contact-phone\"\u003e707-999-3071\u003c\/span\u003e\u003cspan class=\"ai-contact-divider\"\u003e|\u003c\/span\u003e\u003cspan class=\"ai-contact-email\"\u003econtact@audiointensity.com\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/aside\u003e\n\n\u003cdiv class=\"ai-faq-section\"\u003e\n\n\u003ch2\u003eFrequently Asked Shallow Mount Subwoofer Questions\u003c\/h2\u003e\n\n\u003ch3\u003eHow much mounting depth do I actually need for a shallow subwoofer?\u003c\/h3\u003e\n\u003cp\u003eShallow 8 inch drivers typically need 2.5 to 3.5 inches. Shallow 10 inch drivers need 3 to 4 inches. Shallow 12 inch drivers need 3.5 to 4.5 inches. Always check the specific driver's published mounting depth and add a quarter inch for cone clearance and air movement behind the basket.\u003c\/p\u003e\n\n\u003ch3\u003eWill a shallow mount sub sound as good as a regular subwoofer?\u003c\/h3\u003e\n\u003cp\u003eFor most installs, yes. The audible differences come into play at extreme SPL or in the bottom octave (below 30Hz) where deep-basket competition drivers have an advantage. For musical playback at sane levels in a properly sized sealed enclosure, a quality shallow sub from JL Audio, Arc Audio, Wavtech, Alpine, or Prodigy will sound clean and tight. The trade-off is real but usually small.\u003c\/p\u003e\n\n\u003ch3\u003eSealed or ported for shallow mount subs?\u003c\/h3\u003e\n\u003cp\u003eSealed in nearly all cases. Sealed enclosures are smaller, deliver more accurate transient response, and tolerate a wider range of music styles. Ported shallow builds need significantly more internal volume to work, which usually conflicts with the space-saving reason you chose a shallow driver. If you need maximum output at a specific tuning frequency and have the volume, ported can work, but plan the box carefully.\u003c\/p\u003e\n\n\u003ch3\u003eCan I use shallow mount subs under truck seats?\u003c\/h3\u003e\n\u003cp\u003eYes, this is the most common application. Single-cab trucks usually fit one or two 8 inch shallow drivers behind the seat. Extended and crew cab trucks routinely fit dual 10 or 12 inch shallow subs under the rear seat. Audio Intensity can build a vehicle-specific sealed enclosure tailored to your exact cab dimensions, or recommend a pre-built option that matches your driver and vehicle.\u003c\/p\u003e\n\n\u003ch3\u003eDo shallow mount subs need a special amplifier?\u003c\/h3\u003e\n\u003cp\u003eNo. Use a standard monoblock or 2-channel amp matched to the sub's RMS rating at your final wired impedance. The shallow form factor doesn't change power requirements. Match RMS to RMS, set gain correctly to prevent clipping, and use an 80Hz low-pass filter as a starting point.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's the difference between shallow mount, slim, and flat subwoofers?\u003c\/h3\u003e\n\u003cp\u003eSame product category, different marketing terms. Manufacturers use \"shallow mount,\" \"slim,\" \"low profile,\" \"flat,\" and \"thin\" interchangeably. All describe drivers engineered for reduced mounting depth. Specs (mounting depth, RMS, sensitivity, frequency response) are what matter, not the marketing label.\u003c\/p\u003e\n\n\u003c\/div\u003e\n\n\u003c\/div\u003e","products":[{"product_id":"arc-audio-a10-subwoofer","title":"Arc Audio A10 10-Inch Subwoofer","description":"\u003cstyle\u003e\n  .arc-wrap { max-width: 100%; font-family: inherit; color: #e4e4e7 !important; }\n  .arc-hero { background: #18181b !important; border: 1px solid #3f3f46 !important; color: #ffffff !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #d71920 !important; }\n  .arc-eyebrow { color: #c8ccd0 !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .arc-hero p { color: #f4f4f5 !important; font-size: 16px; margin: 0 0 18px 0; }\n  .arc-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .arc-badge { background: #d71920 !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .arc-badge-alt { background: #27272a !important; color: #ffffff !important; border: 1px solid #c8ccd0 !important; }\n  .arc-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-wrap h4 { color: #f04657 !important; font-size: 17px; margin: 20px 0 8px 0; }\n  .arc-wrap p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-callout { background: #27272a !important; border: 1px solid #c8ccd0 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .arc-callout p { color: #f4f4f5 !important; margin: 0; }\n  .arc-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .arc-stat { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .arc-stat .arc-statnum { color: #ffffff !important; font-size: 22px; font-weight: 700; display: block; }\n  .arc-stat .arc-statlabel { color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .arc-cta { background: #18181b !important; border: 1px solid #3f3f46 !important; color: #ffffff !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #d71920 !important; }\n  .arc-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .arc-cta p { color: #f4f4f5 !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-wrap\"\u003e\n\n  \u003cdiv class=\"arc-hero\"\u003e\n    \u003cp class=\"arc-eyebrow\"\u003eArc Audio A-Series Shallow-Mount Subwoofers\u003c\/p\u003e\n    \u003ch2\u003eArc Audio A10 10 Inch Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eShallow-mount performance without shallow-mount compromise. The A10 fits where standard subwoofers cannot, built with premium materials that earn the A-Series its place in Arc Audio's lineup.\u003c\/p\u003e\n    \u003cdiv class=\"arc-badges\"\u003e\n      \u003cspan class=\"arc-badge\"\u003e250W RMS\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003e500W Peak\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003e3.77 in Mounting Depth\u003c\/span\u003e\n      \u003cspan class=\"arc-badge arc-badge-alt\"\u003eDual 2 or Dual 4 Ohm\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eShallow-Mount Built Properly\u003c\/h3\u003e\n  \u003cp\u003eThe Arc Audio A10 was designed specifically for installations where depth is the hard constraint: under rear seats in trucks and SUVs, behind front seats in sports cars and extended cabs, custom shallow enclosures, spare tire well conversions. At 3.77 inches of mounting depth, it opens locations that a standard 5.5 inch subwoofer cannot reach.\u003c\/p\u003e\n  \u003cp\u003eThe distinction from a budget shallow-mount is how Arc Audio built it. A Totoku copper wire voice coil imported from Japan, a spun-laced Nomex composite former, a progressive polycotton Nomex-blend spider, and all bonding surfaces laser-etched and primed before adhesion. These are not cosmetic details; they are why the A10 handles 250 watts RMS continuously in a package less than 4.25 inches tall.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-statgrid\"\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e3.77 in\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e250W\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eRMS Power\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e8mm\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eXmax\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e0.85\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eCu Ft Optimum (Gross)\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eA-Series vs. ARC Series: Different Problems, Different Solutions\u003c\/h3\u003e\n  \u003cp\u003eThe A10 and the ARC Series 10 both handle 250 watts RMS and carry the same price. The difference is what each driver is designed for. The ARC Series 10 is a 5.5 inch deep standard driver with 16mm Xmax, built for balanced linear performance in conventional sealed enclosures. The A10 is a 3.77 inch shallow driver with 8mm Xmax, built for installations where the ARC 10 will not physically fit.\u003c\/p\u003e\n  \u003cp\u003eThe choice is not about which is better; it is about which one solves your specific installation constraint. If you have 5.5 inches of mounting depth, the ARC Series 10 gives you more excursion capability and a broader range of enclosure options. If you have 4 inches or less, the A10 is the answer.\u003c\/p\u003e\n\n  \u003ch3\u003eBuilt for the Installation, Not the Spec Sheet\u003c\/h3\u003e\n  \u003cp\u003eThe A10 uses a progressive heat-pressed poly-injected pulp cone for low mass and consistent acoustic behavior across a wide range of listening levels. The UV grade polyether surround resists degradation from ultraviolet exposure, humidity, and temperature cycling, which matters in vehicles with significant sun exposure or temperature swings. The multi-point geometric basket design controls resonances in the motor and basket structure that would otherwise color the bass response and waste acoustic energy.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment at a glance:\u003c\/strong\u003e mounting depth 3.77 inches, cutout 9-1\/16 inches, outside diameter 10.08 inches, total depth 4.24 inches. Plan for a minimum of 4.25 to 4.5 inches of internal enclosure height to allow rear clearance for the motor assembly. Arc Audio publishes enclosure volumes as gross (external) dimensions; see the enclosure performance section below for calculated alignments at each recommended volume.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eDesigned and engineered in the USA. Every Arc Audio A10 sold by Audio Intensity is brand new and carries the Arc Audio 1-year warranty through authorized dealers.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-cta\"\u003e\n    \u003ch3\u003eAuthorized Arc Audio Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity ships the Arc Audio A10 fast from Tullahoma, Tennessee, with real installer support before and after the sale. Tell us your vehicle, your available space, and your amplifier and we will help you get the enclosure and the wiring right for your install.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .arc-enc { max-width: 100%; font-family: inherit; }\n  .arc-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-enc p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-enc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }\n  @media (max-width: 640px) { .arc-enc-grid { grid-template-columns: 1fr; } }\n  .arc-enc-card { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; overflow: hidden; }\n  .arc-enc-card-head { background: #d71920 !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .arc-enc-table { width: 100%; border-collapse: collapse; }\n  .arc-enc-table th { background: #27272a !important; color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .arc-enc-table td { padding: 10px 12px; border-bottom: 1px solid #27272a !important; font-size: 14px; }\n  .arc-enc-table td:first-child { color: #e4e4e7 !important; font-weight: 600; }\n  .arc-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .arc-enc-table tr:last-child td { border-bottom: none !important; }\n  .arc-enc-table .arc-optimal td { background: #1a2a1a !important; }\n  .arc-enc-table .arc-optimal td:first-child { color: #4ade80 !important; }\n  .arc-char { font-size: 11px; color: #a1a1aa !important; display: block; font-weight: 400; margin-top: 2px; }\n  .arc-graph-wrap { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .arc-graph-title { color: #c8ccd0 !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .arc-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #a1a1aa !important; }\n  .arc-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .arc-enc-note { background: #27272a !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .arc-enc-note p { color: #e4e4e7 !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .arc-enc-link { color: #f04657 !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-enc\"\u003e\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing Arc Audio's published Thiele-Small parameters and their recommended sealed volumes, here are the predicted Qtc, system resonance (Fc), and F3 rolloff for each box size. Arc Audio publishes the A10 enclosure volumes as gross (external) dimensions. Net internal volume will be smaller after accounting for panel thickness and driver displacement. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n  \u003cp\u003eOne important note specific to this driver: the A10 has 8mm of one-way Xmax, which is less than the ARC Series 10 at 16mm. The frequency response curves show the theoretical sealed alignment, but maximum clean output before excursion limiting will be lower than a deeper-mount driver at the same enclosure tuning. Plan amplifier power accordingly and set gains conservatively.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-enc-grid\"\u003e\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eD2 — Dual 2 Ohm  |  Qts 0.511  |  Fs 26.995 Hz  |  Vas 40.413 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume (Gross)\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.65 cu ft\u003cspan class=\"arc-char\"\u003eMinimum \/ tightest\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.913\u003c\/td\u003e\n\u003ctd\u003e48.3 Hz\u003c\/td\u003e\n\u003ctd\u003e39.7 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n\u003ctd\u003e0.85 cu ft ★\u003cspan class=\"arc-char\"\u003eOptimum (Arc recommended)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.836\u003c\/td\u003e\n\u003ctd\u003e44.2 Hz\u003c\/td\u003e\n\u003ctd\u003e38.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.1 cu ft\u003cspan class=\"arc-char\"\u003eMaximum \/ most relaxed\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.775\u003c\/td\u003e\n\u003ctd\u003e40.9 Hz\u003c\/td\u003e\n\u003ctd\u003e37.7 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eD4 — Dual 4 Ohm  |  Qts 0.547  |  Fs 26.995 Hz  |  Vas 41.819 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume (Gross)\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.65 cu ft\u003cspan class=\"arc-char\"\u003eMinimum \/ tightest\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.989\u003c\/td\u003e\n\u003ctd\u003e48.8 Hz\u003c\/td\u003e\n\u003ctd\u003e38.6 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n\u003ctd\u003e0.85 cu ft ★\u003cspan class=\"arc-char\"\u003eOptimum (Arc recommended)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.905\u003c\/td\u003e\n\u003ctd\u003e44.7 Hz\u003c\/td\u003e\n\u003ctd\u003e36.9 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.1 cu ft\u003cspan class=\"arc-char\"\u003eMaximum \/ most relaxed\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.837\u003c\/td\u003e\n\u003ctd\u003e41.3 Hz\u003c\/td\u003e\n\u003ctd\u003e35.9 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-enc-grid\"\u003e\n    \u003cdiv class=\"arc-graph-wrap\"\u003e\n      \u003cp class=\"arc-graph-title\"\u003eD2 Frequency Response — Sealed\u003c\/p\u003e\n      \u003csvg viewbox=\"0 0 420 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"38\" y=\"14\" width=\"368\" height=\"152\" fill=\"#0f0f0f\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"128.0\" y2=\"128.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"132.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#71717a\"\u003e-12dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"109.0\" y2=\"109.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"113.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#71717a\"\u003e-9dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"90.0\" y2=\"90.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"94.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#71717a\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"71.0\" y2=\"71.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"75.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#71717a\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"52.0\" y2=\"52.0\" stroke=\"#52525b\" stroke-width=\"1.5\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"56.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#71717a\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"33.0\" y2=\"33.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"37.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#71717a\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"71.0\" y2=\"71.0\" stroke=\"#d71920\" stroke-width=\"1\" stroke-dasharray=\"4 3\" opacity=\"0.5\"\u003e\u003c\/line\u003e\n\u003cline x1=\"73.3\" x2=\"73.3\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"123.1\" x2=\"123.1\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"158.5\" x2=\"158.5\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"185.9\" x2=\"185.9\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"208.3\" x2=\"208.3\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"243.6\" x2=\"243.6\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"271.0\" x2=\"271.0\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"320.9\" x2=\"320.9\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"356.2\" x2=\"356.2\" y1=\"14\" y2=\"166\" stroke=\"#27272a\" 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363.1,51.4 364.3,51.4 365.5,51.5 366.7,51.5 368.0,51.5 369.2,51.5 370.4,51.5 371.7,51.5 372.9,51.5 374.1,51.5 375.3,51.5 376.6,51.5 377.8,51.5 379.0,51.6 380.2,51.6 381.5,51.6 382.7,51.6 383.9,51.6 385.1,51.6 386.4,51.6 387.6,51.6 388.8,51.6 390.1,51.6 391.3,51.6 392.5,51.6 393.7,51.6 395.0,51.7 396.2,51.7 397.4,51.7 398.6,51.7 399.9,51.7 401.1,51.7 402.3,51.7 403.5,51.7 404.8,51.7 406.0,51.7\" fill=\"none\" stroke=\"#60a5fa\" stroke-width=\"1.5\" stroke-linejoin=\"round\" stroke-dasharray=\"5 3\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n      \u003cdiv class=\"arc-graph-legend\"\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.65 cu ft (Qtc 0.989)\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.85 cu ft (Qtc 0.905) ★\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e1.1 cu ft (Qtc 0.837)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#ffffff !important;\"\u003eWhat the numbers mean:\u003c\/strong\u003e The A10 runs in the warm to slightly punchy sealed zone across all three volumes. Qtc values from 0.775 to 0.913 (D2) and 0.837 to 0.989 (D4) produce full-sounding bass with a gentle midbass lift. F3 falls in the 37 to 40 Hz range, solid deep bass extension for a shallow-mount 10. Remember that Arc publishes these volumes as gross (external) dimensions, so actual net internal volume will be somewhat smaller. Also note the A10's 8mm Xmax is half that of the ARC Series 10, which means maximum undistorted output is lower; the sealed alignment shown here is the frequency response shape, not an output level guarantee at high excursion. Vehicle cabin gain below 80 Hz adds 6 to 12 dB in practice. \u003ca class=\"arc-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #e4e4e7 !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eReady to build? The \u003cstrong style=\"color: #ffffff !important;\"\u003eEnclosures tab above\u003c\/strong\u003e lists the Arc Audio A10 subwoofer system and Proline X enclosures that pair with this driver, CNC-cut in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Arc Audio","offers":[{"title":"Dual 2 Ohm","offer_id":40310168977497,"sku":"A10 D2","price":329.99,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":40310169010265,"sku":"A10 D4","price":329.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/arc-audio-a10-10-subwoofersubwooferarc-audio-867640.jpg?v=1761969117"},{"product_id":"audiomobile-evo-2410-10-subwoofer","title":"Audiomobile EVO 2410 10 inch Subwoofer","description":"\u003ch2\u003eAudiomobile EVO 2410 Subwoofer\u003c\/h2\u003e\n\u003cp\u003eThe Audiomobile EVO 2410 is a 10-inch \u003ca href=\"https:\/\/audiointensity.com\/collections\/car-subwoofer-power\" target=\"_blank\" rel=\"noopener\"\u003esubwoofer\u003c\/a\u003e designed for high-performance sound in a compact form. Its advanced technology and durable construction deliver deep, precise bass and long-lasting reliability, making it ideal for car audio enthusiasts.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Technologies\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eShaped Manifold Gap (SMG) Technology:\u003c\/strong\u003e Enhances magnetic flow for clearer, more accurate sound.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSLX Cast Alloy Frame:\u003c\/strong\u003e Strong, low-profile frame for compact installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e15.8 mm Xmax:\u003c\/strong\u003e Extended linear excursion delivers rich, powerful bass.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management System:\u003c\/strong\u003e Efficient voice coil and motor cooling for reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFlexible and Compatible\u003c\/h3\u003e\n\u003cp\u003eAvailable in \u003cstrong\u003eSingle or\u003c\/strong\u003e \u003cstrong\u003eDual 4-ohm Voice Coils\u003c\/strong\u003e, the EVO 2410 allows flexible wiring for easy compatibility with various amplifiers. It fits sealed or vented enclosures and offers optimal performance in tight spaces thanks to its under-100mm profile.\u003c\/p\u003e\n\u003ch3\u003eInstallation Made Easy\u003c\/h3\u003e\n\u003cp\u003eCompact yet powerful, the EVO 2410 is designed for simple installation. Whether used in a single or multi-subwoofer configuration, it adapts seamlessly to various setups, making it an excellent choice for upgrading or building a new system.\u003c\/p\u003e\n\u003cp\u003eUpgrade your system with the Audiomobile EVO 2410 and enjoy high-quality, immersive sound.\u003c\/p\u003e","brand":"Audiomobile","offers":[{"title":"Single 4 Ohm","offer_id":40310281109593,"sku":"Evo 2410 S4","price":449.95,"currency_code":"USD","in_stock":false},{"title":"Dual 4 Ohm","offer_id":40310281142361,"sku":"Evo 2410 D4","price":449.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/audiomobile-evo-2410-10-inch-subwoofersubwooferaudiomobile-392195.jpg?v=1761969123"},{"product_id":"arc-audio-a12-12-subwoofer","title":"Arc Audio A12 12\" Subwoofer | Audio Intensity","description":"\u003cstyle\u003e\n  .arc-wrap { max-width: 100%; font-family: inherit; color: #e4e4e7 !important; }\n  .arc-hero { background: #18181b !important; border: 1px solid #3f3f46 !important; color: #ffffff !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #d71920 !important; }\n  .arc-eyebrow { color: #c8ccd0 !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .arc-hero p { color: #f4f4f5 !important; font-size: 16px; margin: 0 0 18px 0; }\n  .arc-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .arc-badge { background: #d71920 !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .arc-badge-alt { background: #27272a !important; color: #ffffff !important; border: 1px solid #c8ccd0 !important; }\n  .arc-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-wrap h4 { color: #f04657 !important; font-size: 17px; margin: 20px 0 8px 0; }\n  .arc-wrap p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-callout { background: #27272a !important; border: 1px solid #c8ccd0 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .arc-callout p { color: #f4f4f5 !important; margin: 0; }\n  .arc-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .arc-stat { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .arc-stat .arc-statnum { color: #ffffff !important; font-size: 22px; font-weight: 700; display: block; }\n  .arc-stat .arc-statlabel { color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .arc-cta { background: #18181b !important; border: 1px solid #3f3f46 !important; color: #ffffff !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #d71920 !important; }\n  .arc-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .arc-cta p { color: #f4f4f5 !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-wrap\"\u003e\n\n  \u003cdiv class=\"arc-hero\"\u003e\n    \u003cp class=\"arc-eyebrow\"\u003eArc Audio A-Series Shallow-Mount Subwoofers\u003c\/p\u003e\n    \u003ch2\u003eArc Audio A12 12 Inch Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eMaximum output from the A-Series platform. The A12 brings 300 watts RMS and 12 inch cone area to installs where a full-depth 12 cannot physically fit, built with the same premium materials that define the A-Series line.\u003c\/p\u003e\n    \u003cdiv class=\"arc-badges\"\u003e\n      \u003cspan class=\"arc-badge\"\u003e300W RMS\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003e600W Peak\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003e3.85 in Mounting Depth\u003c\/span\u003e\n      \u003cspan class=\"arc-badge arc-badge-alt\"\u003eDual 2 or Dual 4 Ohm\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eMaximum A-Series Output\u003c\/h3\u003e\n  \u003cp\u003eThe Arc Audio A12 is the top of the A-Series lineup: 300 watts RMS, 600 watts peak, 12 inch cone area, and 3.85 inches of mounting depth. The same Totoku copper voice coil wire, spun-laced Nomex former, UV grade polyether surround, progressive Nomex-blend spider, and laser-etched bonding surfaces as the A10, scaled to a 12 inch platform and built to handle a larger enclosure and more amplifier power.\u003c\/p\u003e\n  \u003cp\u003eThe jump from a 10 inch to a 12 inch cone produces about 45 percent more cone area, which moves more air at the same excursion. The result is more bass output per watt, deeper extension for a given box size, and the ability to fill larger vehicle cabins that a 10 will leave sounding thin. When your installation allows for the 0.85 to 1.25 cubic foot gross enclosure volume the A12 needs, the extra cone area is worth having.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-statgrid\"\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e3.85 in\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e300W\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eRMS Power\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e8mm\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eXmax\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e1.0\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eCu Ft Optimum (Gross)\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eA12 vs. A10: Choose by Enclosure Volume\u003c\/h3\u003e\n  \u003cp\u003eThe A10 and A12 mount at essentially the same depth (3.77 and 3.85 inches). The difference is enclosure volume: the A10 works from 0.40 to 0.90 cubic feet gross, and the A12 requires 0.85 to 1.25 cubic feet gross. If your install can accommodate the larger box, the A12 gives you more cone area, more power handling, and more bass. If space limits you to under 0.85 cubic feet, the A10 is the right call.\u003c\/p\u003e\n\n  \u003ch3\u003eA12 vs. ARC Series 12: Choose by Mounting Depth\u003c\/h3\u003e\n  \u003cp\u003eThe ARC Series 12 inch subwoofer needs 6.0 inches of mounting depth. The A12 needs 3.85 inches. If you have 6 inches of depth available, the ARC Series 12 gives you a standard-depth driver with 16mm of Xmax and a linear design optimized for accuracy. If you have 4 inches or less, the A12 delivers 12 inch shallow-mount performance where the ARC 12 simply will not fit. Both carry the same enclosure volume requirement in the recommended range.\u003c\/p\u003e\n\n  \u003ch3\u003eBuilt to the A-Series Standard\u003c\/h3\u003e\n  \u003cp\u003eThe progressive heat-pressed poly-injected pulp cone keeps moving mass low so the limited motor force of a shallow-mount design can still drive the cone responsively. The UV grade polyether surround handles the temperature cycling and UV exposure that destroy foam surrounds over time. The multi-point geometric basket and motor resonation control eliminates the losses that would otherwise color the bass response at this power level. Every gluing surface is laser-etched and primed before adhesion, and every adhesive is cured in a controlled environment to specification.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment at a glance:\u003c\/strong\u003e mounting depth 3.85 inches, cutout 10.91 inches, outside diameter 12.17 inches, total depth 4.32 inches. Plan 4.35 to 4.75 inches of internal enclosure height to allow rear clearance. Arc Audio publishes enclosure volumes as gross (external) dimensions: minimum 0.85, optimum 1.0, maximum 1.25 cubic feet gross. See the enclosure performance section below for calculated alignments at each volume.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eDesigned and engineered in the USA. Every Arc Audio A12 sold by Audio Intensity is brand new and carries the Arc Audio 1-year warranty through authorized dealers.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-cta\"\u003e\n    \u003ch3\u003eAuthorized Arc Audio Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity ships the Arc Audio A12 fast from Tullahoma, Tennessee, with real installer support before and after the sale. Tell us your vehicle, your clearances, and your amplifier and we will help you confirm whether the A12 fits and how to build the enclosure correctly.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .arc-enc { max-width: 100%; font-family: inherit; }\n  .arc-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-enc p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-enc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }\n  @media (max-width: 640px) { .arc-enc-grid { grid-template-columns: 1fr; } }\n  .arc-enc-card { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; overflow: hidden; }\n  .arc-enc-card-head { background: #d71920 !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .arc-enc-table { width: 100%; border-collapse: collapse; }\n  .arc-enc-table th { background: #27272a !important; color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .arc-enc-table td { padding: 10px 12px; border-bottom: 1px solid #27272a !important; font-size: 14px; }\n  .arc-enc-table td:first-child { color: #e4e4e7 !important; font-weight: 600; }\n  .arc-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .arc-enc-table tr:last-child td { border-bottom: none !important; }\n  .arc-enc-table .arc-optimal td { background: #1a2a1a !important; }\n  .arc-enc-table .arc-optimal td:first-child { color: #4ade80 !important; }\n  .arc-char { font-size: 11px; color: #a1a1aa !important; display: block; font-weight: 400; margin-top: 2px; }\n  .arc-graph-wrap { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .arc-graph-title { color: #c8ccd0 !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .arc-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #a1a1aa !important; }\n  .arc-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .arc-enc-note { background: #27272a !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .arc-enc-note p { color: #e4e4e7 !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .arc-enc-link { color: #f04657 !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-enc\"\u003e\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing Arc Audio's published Thiele-Small parameters and their recommended sealed volumes, here are the predicted Qtc, system resonance (Fc), and F3 rolloff for each box size. Arc Audio publishes the A12 enclosure volumes as gross (external) dimensions. Net internal volume will be smaller after accounting for panel thickness and driver displacement. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n  \u003cp\u003eThe A12 is a high-Qts shallow-mount driver with a larger than typical Vas. This produces elevated Qtc values in the recommended gross volumes, which means a pronounced midbass lift and strong output in the upper bass. The payoff is exceptional F3 extension: the D2 at the optimum 1.0 cu ft lands at F3 35.6 Hz, excellent deep bass from a driver that mounts at under 4 inches. As with the A10, the 8mm Xmax means maximum undistorted output at high excursion is more limited than a standard-depth driver; set gains accordingly.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-enc-grid\"\u003e\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eD2 — Dual 2 Ohm  |  Qts 0.612  |  Fs 25.010 Hz  |  Vas 76.323 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume (Gross)\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.85 cu ft\u003cspan class=\"arc-char\"\u003eMinimum \/ tightest\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.250\u003c\/td\u003e\n\u003ctd\u003e51.1 Hz\u003c\/td\u003e\n\u003ctd\u003e37.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n\u003ctd\u003e1.0 cu ft ★\u003cspan class=\"arc-char\"\u003eOptimum (Arc recommended)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.176\u003c\/td\u003e\n\u003ctd\u003e48.1 Hz\u003c\/td\u003e\n\u003ctd\u003e35.6 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.25 cu ft\u003cspan class=\"arc-char\"\u003eMaximum \/ most relaxed\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.087\u003c\/td\u003e\n\u003ctd\u003e44.4 Hz\u003c\/td\u003e\n\u003ctd\u003e33.8 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eD4 — Dual 4 Ohm  |  Qts 0.659  |  Fs 26.995 Hz  |  Vas 81.813 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume (Gross)\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.85 cu ft\u003cspan class=\"arc-char\"\u003eMinimum \/ tightest\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.382\u003c\/td\u003e\n\u003ctd\u003e56.6 Hz\u003c\/td\u003e\n\u003ctd\u003e40.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n\u003ctd\u003e1.0 cu ft ★\u003cspan class=\"arc-char\"\u003eOptimum (Arc recommended)\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.300\u003c\/td\u003e\n\u003ctd\u003e53.2 Hz\u003c\/td\u003e\n\u003ctd\u003e38.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.25 cu ft\u003cspan class=\"arc-char\"\u003eMaximum \/ most relaxed\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.199\u003c\/td\u003e\n\u003ctd\u003e49.1 Hz\u003c\/td\u003e\n\u003ctd\u003e36.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-enc-grid\"\u003e\n    \u003cdiv 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250.2,41.1 251.4,41.3 252.7,41.4 253.9,41.6 255.1,41.8 256.3,42.0 257.6,42.1 258.8,42.3 260.0,42.5 261.3,42.6 262.5,42.8 263.7,42.9 264.9,43.1 266.2,43.2 267.4,43.4 268.6,43.6 269.8,43.7 271.1,43.8 272.3,44.0 273.5,44.1 274.7,44.3 276.0,44.4 277.2,44.6 278.4,44.7 279.7,44.8 280.9,45.0 282.1,45.1 283.3,45.2 284.6,45.3 285.8,45.5 287.0,45.6 288.2,45.7 289.5,45.8 290.7,45.9 291.9,46.0 293.1,46.2 294.4,46.3 295.6,46.4 296.8,46.5 298.1,46.6 299.3,46.7 300.5,46.8 301.7,46.9 303.0,47.0 304.2,47.1 305.4,47.2 306.6,47.3 307.9,47.4 309.1,47.4 310.3,47.5 311.5,47.6 312.8,47.7 314.0,47.8 315.2,47.9 316.5,47.9 317.7,48.0 318.9,48.1 320.1,48.2 321.4,48.2 322.6,48.3 323.8,48.4 325.0,48.5 326.3,48.5 327.5,48.6 328.7,48.7 329.9,48.7 331.2,48.8 332.4,48.9 333.6,48.9 334.9,49.0 336.1,49.0 337.3,49.1 338.5,49.1 339.8,49.2 341.0,49.3 342.2,49.3 343.4,49.4 344.7,49.4 345.9,49.5 347.1,49.5 348.3,49.6 349.6,49.6 350.8,49.7 352.0,49.7 353.3,49.7 354.5,49.8 355.7,49.8 356.9,49.9 358.2,49.9 359.4,50.0 360.6,50.0 361.8,50.0 363.1,50.1 364.3,50.1 365.5,50.2 366.7,50.2 368.0,50.2 369.2,50.3 370.4,50.3 371.7,50.3 372.9,50.4 374.1,50.4 375.3,50.4 376.6,50.5 377.8,50.5 379.0,50.5 380.2,50.5 381.5,50.6 382.7,50.6 383.9,50.6 385.1,50.7 386.4,50.7 387.6,50.7 388.8,50.7 390.1,50.8 391.3,50.8 392.5,50.8 393.7,50.8 395.0,50.9 396.2,50.9 397.4,50.9 398.6,50.9 399.9,50.9 401.1,51.0 402.3,51.0 403.5,51.0 404.8,51.0 406.0,51.0\" fill=\"none\" stroke=\"#60a5fa\" stroke-width=\"1.5\" stroke-linejoin=\"round\" stroke-dasharray=\"5 3\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n      \u003cdiv class=\"arc-graph-legend\"\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.85 cu ft (Qtc 1.382)\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e1.0 cu ft (Qtc 1.300) ★\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e1.25 cu ft (Qtc 1.199)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#ffffff !important;\"\u003eWhat the numbers mean:\u003c\/strong\u003e The A12 runs at higher Qtc values than most standard-depth drivers, which is characteristic of shallow-mount designs with high Qts and large Vas. Qtc above 1.0 produces a pronounced midbass lift centered around the system resonance, adding impact and presence in the upper bass. The frequency response curves show a rising then falling shape rather than a flat top. The real story is the F3: the D2 at 1.0 cu ft reaches 35.6 Hz, and even at 0.85 cu ft it extends to 37 Hz, which is strong deep bass extension for a driver that mounts at 3.85 inches. Vehicle cabin gain adds another 6 to 12 dB below 80 Hz in practice. Arc publishes these as gross (external) volumes; net internal volume will be somewhat smaller. The 8mm Xmax caps maximum clean output before the driver reaches its excursion limit. \u003ca class=\"arc-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #e4e4e7 !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eReady to build? The \u003cstrong style=\"color: #ffffff !important;\"\u003eEnclosures tab above\u003c\/strong\u003e lists Proline X sealed enclosures optimized for 12 inch Arc Audio subwoofers, CNC-cut in Tullahoma, Tennessee.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Arc Audio","offers":[{"title":"Dual 2 Ohm","offer_id":40311413997657,"sku":"A12 D2","price":349.0,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":40311414030425,"sku":"A12 D4","price":349.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/arc-audio-a12-12-subwoofersubwooferarc-audio-914537.jpg?v=1761969128"},{"product_id":"audiomobile-evo-2412-12-subwoofer","title":"Audiomobile EVO 2412 12\" Subwoofer","description":"\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe new Evo Series represents a composite of the benefits of the other Audiomobile subwoofers. Featuring our proven, low-profile, “SLX” cast alloy frame and includes our proprietary Shaped Manifold Gap (“SMG”), featuring a fully-machined, extended magnetic top plate, plus a unique thermal management design, which uses the Aluminum frame as an integral part of cooling the VC and motor, without resorting to costly machining of the frame, or additional parts.\u003c\/p\u003e\n\u003cp\u003eThe Evo offers the benefits of the GTS “21″ series, but in a lower profile, under 100 mm, form factor, yet delivers higher linear excursion, or “Xmax” plus higher power-handling, yet does so in similar micro enclosures. Higher excursion means higher sound quality at extreme output levels. With a superb 15.5 mm of linear, one-way “Xmax” (Evo 2410), the Evo series will push the envelope of performance in the slimline subwoofer category. \u003c\/p\u003e\n\u003cp\u003eThe Evo series also adds dual 4-ohm, multi-layer voice coils, allowing for more flexibility in system design, though typically they will be wired to create a nominal ’2-ohm’ load, ideal for most monoblock amplifiers, but they can also be used in two or three in one enclosure, and still presents a near-ideal ’2.5′ ohm load.\u003c\/p\u003e\n\u003cp\u003e \u003cbr\u003e- High-performance, slim-line series, optimized for small-enclosure systems.\u003cbr\u003e\u003cbr\u003e- Proprietary, \"SMG\" (Shaped-Manifold Gap) motor technology featuring a fully CNC extended-gap motor.\u003cbr\u003e\u003cbr\u003e- Low-profile, SLX cast-alloy frame, with Carbon Diamond powder paint, for slim mounting-depth box apps.\u003cbr\u003e\u003cbr\u003e- High-power motor and multilayer VC features Aluminum \"FSD\" (Flux\u003cbr\u003eStabilization Device) for lower inductance.\u003cbr\u003e\u003cbr\u003e- Specifically designed for small-sealed or Reflex enclosures (designed to work with M-CAR in micro-box apps).\u003cbr\u003e\u003cbr\u003e- Slimline (4.5\" deep). Long 16.1 mm Xmax. DVC 4 ohm \/ 500 watts.\u003c\/p\u003e","brand":"Audiomobile","offers":[{"title":"Dual 4 Ohm","offer_id":40311439949913,"sku":"Evo 2412 D4","price":499.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/audiomobile-evo-2412-12-subwoofersubwooferaudiomobile-407564.jpg?v=1761969133"},{"product_id":"audiomobile-evo-2408-8-subwoofer","title":"Audiomobile EVO 2408 8 inch Subwoofer","description":"\u003cdiv data-pm-slice=\"2 2 []\"\u003e\n\u003ch2\u003eIntroduction to High-Quality Audio\u003c\/h2\u003e\n\u003cp\u003eIn the world of audio systems, quality is paramount. High-quality audio systems are designed to provide an immersive listening experience, delivering clear and detailed sound reproduction that brings music to life. The Audiomobile EVO series represents a significant leap forward in audio technology, offering a range of benefits that cater to both casual listeners and audiophiles alike. Whether you’re upgrading your car audio system or setting up a new home theater, the EVO series promises to elevate your sound experience to new heights.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2\u003eAudiomobile Evo 2408 8\" Subwoofer: Compact Power, Durability, and Versatility\u003c\/h2\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe Audiomobile Evo 2408 8” Subwoofer delivers a remarkable power and compact design combination, as highlighted in numerous customer reviews praising the quality and effectiveness of the product. Despite its small size, it handles up to 350 watts RMS, ensuring deep, punchy bass that rivals larger subwoofers. Depending on factors like the specific vehicle model and existing audio setup, the performance can vary, but it consistently impresses users. This subwoofer is designed to maintain or improve the factory audio systems of vehicles with limited space and fits seamlessly into tight areas without sacrificing sound quality. Customers feel that the subwoofer enhances the overall quality and satisfaction of their vehicle's audio systems. Many have found it to be a reliable addition to their setups, often exceeding their expectations. It offers consistent, rich, low-end performance across all music genres, whether installed under a seat or in a small trunk, and has received great feedback for its sound quality. Users have shared their experiences with the DIY install process, noting the importance of proper instructions and support. It accommodates a lot of gear seamlessly, enhancing the functionality of the setup. If users are missing the crucial bass element, this subwoofer resolves the issue effectively. The advanced motor design contributes to enhanced performance, including thermal management and power handling. Proper mount of the subwoofer is crucial for optimal functionality and fit. Customers have expressed satisfaction with their purchase process, highlighting the speed of delivery and customer service. The setup of the subwoofer is straightforward, making it a popular choice for sound deadening kits in vehicles. The SLX feature of the Evo Series subwoofers, with its low-profile cast alloy frame, enhances performance. The SMG design further improves thermal management and power handling. Reviews often mention how the subwoofer makes the audio system sound good, providing a clearer and richer experience. Users have spent considerable time on installation, emphasizing their commitment to achieving optimal sound quality. Compared to stock stereo systems, this subwoofer offers significant improvements in sound quality. The quality and performance of the audio equipment and installation kits are often praised, with customers appreciating the reliable support provided during the purchasing or installation process. Various things included in the kits contribute to the overall satisfaction. Having the right components is crucial, akin to having a ticket to a successful installation experience. This subwoofer is particularly effective for truck installations, enhancing sound quality and deadening within the vehicle.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eDurable Construction and Cooling Technology\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eBuilt with high-quality materials, the Evo 2408 is designed to last. Its robust cone and rubber surround can withstand extreme temperatures, constant vibration, and long-term use, ensuring longevity and reliability in any environment. The subwoofer also features an advanced cooling system that prevents overheating during prolonged use. This cooling technology ensures consistent performance even at high volumes, reducing the risk of damage and distortion. As a result, the Evo 2408 provides dependable, long-lasting bass performance, making it an excellent choice for daily drivers and car audio enthusiasts alike.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eKey Features and Benefits\u003c\/h3\u003e\n\u003cp\u003eThe Audiomobile EVO series is packed with features that set it apart from the competition. One of the standout elements is its cast alloy frame, which provides a strong and rigid foundation for the subwoofer. This robust construction allows for more accurate and controlled sound reproduction, ensuring that every note is delivered with precision.\u003c\/p\u003e\n\u003cp\u003eAnother critical component is the aluminum frame, which plays a crucial role in heat dissipation. By effectively managing heat, the subwoofer operates within a safe temperature range, maintaining its performance over time and preventing any risk of overheating.\u003c\/p\u003e\n\u003cp\u003eWhen installing a high-quality audio system, it’s essential to consider various factors such as room acoustics, the type of music being played, and the desired sound pressure level. The EVO series is designed to work seamlessly with a variety of audio systems, including car audio and home theater setups. This versatility makes it an excellent choice for music enthusiasts looking to upgrade their sound experience.\u003c\/p\u003e\n\u003cp\u003eThe linear excursion of the EVO series subwoofers allows for deeper and more controlled bass reproduction. This feature is particularly beneficial for music genres that require a strong low-end response, providing a rich and immersive listening experience.\u003c\/p\u003e\n\u003cp\u003eBuilt to last, the EVO series boasts durable construction that can withstand the rigors of daily use. Whether you’re a daily driver or a car audio enthusiast, the Audiomobile EVO series offers a reliable and high-quality audio solution that enhances your overall listening experience.\u003c\/p\u003e\n\u003cp\u003eIn summary, the Audiomobile EVO series is an excellent investment for anyone looking to enhance their audio experience. With its advanced technology, high-quality components, and versatile compatibility, it offers a range of benefits that make it the perfect choice for upgrading your car audio system or installing a new home theater system.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3\u003eVersatile Installation and Compatibility\u003c\/h3\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003cp\u003eThe Evo 2408 is designed for versatility, fitting easily into various vehicle configurations. Its shallow mounting depth allows for installation in tight spaces, making it perfect for cars with limited room. Whether used in a sealed or ported enclosure, the subwoofer adapts to your preferences, delivering tight, controlled bass in sealed setups and deeper, resonant bass in ported enclosures. The dual voice coil design offers flexibility in wiring, making it compatible with a wide range of amplifiers and allowing for easy integration into existing audio systems. This flexibility ensures that the Evo 2408 can be tailored to fit a wide range of car audio setups, providing a hassle-free installation experience.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Audiomobile","offers":[{"title":"Dual 4 Ohm","offer_id":40328346370137,"sku":"Evo 2408 D4","price":349.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/audiomobile-evo-2408-8-inch-subwoofersubwooferaudiomobile-413558.jpg?v=1761969162"},{"product_id":"arc-audio-arc-series-8-subwoofer","title":"Arc Audio Arc Series 8 inch Subwoofer","description":"\u003cstyle\u003e\n  .arc-wrap { max-width: 100%; font-family: inherit; color: #e4e4e7 !important; }\n  .arc-hero { background: #18181b !important; border: 1px solid #3f3f46 !important; color: #ffffff !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #d71920 !important; }\n  .arc-eyebrow { color: #c8ccd0 !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .arc-hero p { color: #f4f4f5 !important; font-size: 16px; margin: 0 0 18px 0; }\n  .arc-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .arc-badge { background: #d71920 !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .arc-badge-alt { background: #27272a !important; color: #ffffff !important; border: 1px solid #c8ccd0 !important; }\n  .arc-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-wrap h4 { color: #f04657 !important; font-size: 17px; margin: 20px 0 8px 0; }\n  .arc-wrap p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-callout { background: #27272a !important; border: 1px solid #c8ccd0 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .arc-callout p { color: #f4f4f5 !important; margin: 0; }\n  .arc-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .arc-stat { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .arc-stat .arc-statnum { color: #ffffff !important; font-size: 22px; font-weight: 700; display: block; }\n  .arc-stat .arc-statlabel { color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .arc-cta { background: #18181b !important; border: 1px solid #3f3f46 !important; color: #ffffff !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #d71920 !important; }\n  .arc-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .arc-cta p { color: #f4f4f5 !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-wrap\"\u003e\n\n  \u003cdiv class=\"arc-hero\"\u003e\n    \u003cp class=\"arc-eyebrow\"\u003eArc Audio ARC Series Subwoofers\u003c\/p\u003e\n    \u003ch2\u003eArc Audio ARC Series 8 Inch Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eA compact 8 engineered for the balance of sound quality and real output, designed to perform in small sealed enclosures where space is tight and bass still has to be right.\u003c\/p\u003e\n    \u003cdiv class=\"arc-badges\"\u003e\n      \u003cspan class=\"arc-badge\"\u003e150W RMS\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003eDual 2 or Dual 4 Ohm\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003e0.35 to 0.55 cu ft Sealed\u003c\/span\u003e\n      \u003cspan class=\"arc-badge arc-badge-alt\"\u003eUSA Engineered\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBalanced Performance in a Small Footprint\u003c\/h3\u003e\n  \u003cp\u003eThe Arc Audio ARC Series 8 inch subwoofer is built around an optimized balance of sound quality and output, the philosophy that has defined Arc Audio since 1995. It handles 150 watts RMS continuous and 300 watts maximum, with a recommended amplifier range of 5 to 300 watts, so it rewards clean power without demanding a huge amplifier.\u003c\/p\u003e\n  \u003cp\u003eThe standout trait is how little enclosure it needs. The recommended sealed volume is just 0.35 to 0.55 cubic feet, with 0.45 cubic feet as the optimal target. That is a genuinely small box for an 8, which is exactly why this driver fits compact cars, under-seat builds, and behind-seat truck enclosures where a larger sub simply will not go.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-statgrid\"\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e150W\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eRMS Power\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e15mm\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eXmax\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e0.45\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eCu Ft Optimal\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e4.75 in\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eReal Excursion for an 8\u003c\/h3\u003e\n  \u003cp\u003eA 15mm one-way linear Xmax is a healthy number for an 8 inch driver, and it is the reason this sub can move meaningful air from a small box. Combined with a 35.80 square inch cone area and a low resonant frequency, the ARC 8 produces low-end weight that belies its compact enclosure requirement. It is at home in sealed, ported, and infinite baffle applications, giving you flexibility in how you design the system.\u003c\/p\u003e\n\n  \u003ch3\u003eChoose Your Voice Coil: D2 or D4\u003c\/h3\u003e\n  \u003cp\u003eThe ARC Series 8 is available in two voice coil configurations so you can match it to your amplifier. The dual 2-ohm (D2) wires to a 1-ohm or 4-ohm load, ideal for 1-ohm stable monoblocks. The dual 4-ohm (D4) wires to a 2-ohm or 8-ohm load, a better fit for amplifiers that are happiest at 2 ohms or for multi-sub systems. Select the configuration that lands your amplifier in its comfort zone.\u003c\/p\u003e\n\n  \u003ch3\u003eMatch It to the Right Enclosure\u003c\/h3\u003e\n  \u003cp\u003eThis driver was engineered for a specific, small volume, and honoring that is what makes it perform. Our Proline X P8-S is a single-8 sealed enclosure CNC-cut in Tullahoma, Tennessee and sized for drivers exactly like this one. Building your own? Target 0.45 cubic feet net for the best balance of extension and control, and stay within the 0.35 to 0.55 range. Going larger does not add usable bass, it loosens it.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment at a glance:\u003c\/strong\u003e mounting depth is 4.75 inches with a 7-1\/8 inch cutout and an 8-5\/16 inch outside diameter. The shallow mounting depth opens up under-seat and behind-seat locations that deeper drivers cannot use. Confirm your cutout and depth before building.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eDesigned and engineered in the USA by one of the country's leading subwoofer acoustical engineers. Every Arc Audio ARC Series 8 sold by Audio Intensity is brand new and carries the Arc Audio 1-year warranty through authorized dealers.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-cta\"\u003e\n    \u003ch3\u003eAuthorized Arc Audio Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity ships the Arc Audio ARC Series 8 fast from Tullahoma, Tennessee, with real installer support before and after the sale. Tell us your amplifier and your space, and we will help you pick the right voice coil and the right enclosure to get the most from it.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .arc-enc { max-width: 100%; font-family: inherit; }\n  .arc-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-enc p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-enc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }\n  @media (max-width: 640px) { .arc-enc-grid { grid-template-columns: 1fr; } }\n  .arc-enc-card { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; overflow: hidden; }\n  .arc-enc-card-head { background: #d71920 !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .arc-enc-table { width: 100%; border-collapse: collapse; }\n  .arc-enc-table th { background: #27272a !important; color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .arc-enc-table td { padding: 10px 12px; border-bottom: 1px solid #27272a !important; font-size: 14px; }\n  .arc-enc-table td:first-child { color: #e4e4e7 !important; font-weight: 600; }\n  .arc-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .arc-enc-table tr:last-child td { border-bottom: none !important; }\n  .arc-enc-table .arc-optimal td { background: #1a2a1a !important; }\n  .arc-enc-table .arc-optimal td:first-child { color: #4ade80 !important; }\n  .arc-char { font-size: 11px; color: #a1a1aa !important; display: block; font-weight: 400; margin-top: 2px; }\n  .arc-graph-wrap { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .arc-graph-title { color: #c8ccd0 !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .arc-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #a1a1aa !important; }\n  .arc-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .arc-enc-note { background: #27272a !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .arc-enc-note p { color: #e4e4e7 !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .arc-enc-link { color: #f04657 !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-enc\"\u003e\n\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing Arc Audio's published Thiele-Small parameters and their recommended sealed volumes, here are the predicted Qtc, system resonance (Fc), F3 rolloff, and frequency response curves for each box size. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-enc-grid\"\u003e\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eD2 — Dual 2 Ohm  |  Qts 0.289  |  Fs 24.7 Hz  |  Vas 48.14 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e0.35 cu ft\u003cspan class=\"arc-char\"\u003eMinimum \/ tightest\u003c\/span\u003e\n\u003c\/td\u003e\n          \u003ctd\u003e0.699\u003c\/td\u003e\n\u003ctd\u003e59.8 Hz\u003c\/td\u003e\n\u003ctd\u003e60.4 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n          \u003ctd\u003e0.45 cu ft ★\u003cspan class=\"arc-char\"\u003eOptimal (Arc recommended)\u003c\/span\u003e\n\u003c\/td\u003e\n          \u003ctd\u003e0.632\u003c\/td\u003e\n\u003ctd\u003e54.0 Hz\u003c\/td\u003e\n\u003ctd\u003e61.2 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e0.55 cu ft\u003cspan class=\"arc-char\"\u003eMaximum \/ most relaxed\u003c\/span\u003e\n\u003c\/td\u003e\n          \u003ctd\u003e0.585\u003c\/td\u003e\n\u003ctd\u003e50.0 Hz\u003c\/td\u003e\n\u003ctd\u003e62.5 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eD4 — Dual 4 Ohm  |  Qts 0.332  |  Fs 22.7 Hz  |  Vas 43.89 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e0.35 cu ft\u003cspan class=\"arc-char\"\u003eMinimum \/ tightest\u003c\/span\u003e\n\u003c\/td\u003e\n          \u003ctd\u003e0.774\u003c\/td\u003e\n\u003ctd\u003e52.9 Hz\u003c\/td\u003e\n\u003ctd\u003e48.7 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n          \u003ctd\u003e0.45 cu ft ★\u003cspan class=\"arc-char\"\u003eOptimal (Arc recommended)\u003c\/span\u003e\n\u003c\/td\u003e\n          \u003ctd\u003e0.700\u003c\/td\u003e\n\u003ctd\u003e47.9 Hz\u003c\/td\u003e\n\u003ctd\u003e48.4 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003e0.55 cu ft\u003cspan class=\"arc-char\"\u003eMaximum \/ most relaxed\u003c\/span\u003e\n\u003c\/td\u003e\n          \u003ctd\u003e0.649\u003c\/td\u003e\n\u003ctd\u003e44.4 Hz\u003c\/td\u003e\n\u003ctd\u003e48.7 Hz\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003c!-- GRAPHS --\u003e\n  \u003cdiv class=\"arc-enc-grid\"\u003e\n\n    \u003c!-- D2 graph --\u003e\n    \u003cdiv class=\"arc-graph-wrap\"\u003e\n      \u003cp class=\"arc-graph-title\"\u003eD2 Frequency Response — Sealed\u003c\/p\u003e\n      \u003csvg id=\"arc8-d2-graph\" viewbox=\"0 0 420 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\u003c\/svg\u003e\n      \u003cdiv class=\"arc-graph-legend\"\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.35 cu ft (Qtc 0.699)\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.45 cu ft (Qtc 0.632) ★\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e0.55 cu ft (Qtc 0.585)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003c!-- D4 graph --\u003e\n    \u003cdiv class=\"arc-graph-wrap\"\u003e\n      \u003cp class=\"arc-graph-title\"\u003eD4 Frequency Response — Sealed\u003c\/p\u003e\n      \u003csvg id=\"arc8-d4-graph\" viewbox=\"0 0 420 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\u003c\/svg\u003e\n      \u003cdiv class=\"arc-graph-legend\"\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.35 cu ft (Qtc 0.774)\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.45 cu ft (Qtc 0.700) ★\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e0.55 cu ft (Qtc 0.649)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#ffffff !important;\"\u003eWhat the numbers mean:\u003c\/strong\u003e Qtc near 0.707 is textbook Butterworth, the flattest possible sealed response. The 0.58–0.71 range is the near-Butterworth zone: tight, accurate, excellent transient response with no artificial warmth. The D2 at 0.45 cu ft lands at Qtc 0.632 (near-Butterworth, controlled). The D4 at 0.45 cu ft hits Qtc 0.700, essentially textbook Butterworth. Both are strong alignments. F3 is the half-power point, but vehicle cabin gain typically adds 6–12 dB below 80 Hz, so real in-car extension will be meaningfully deeper than F3 alone suggests. \u003ca class=\"arc-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\n\u003cscript\u003e\n(function() {\n  \/\/ Sealed transfer function: H^2(f) = x^4 \/ (x^4 + x^2*(1\/Qtc^2 - 2) + 1), x = f\/fc\n  function H2(x, Qtc) {\n    var d = x*x*x*x + x*x*(1\/(Qtc*Qtc) - 2) + 1;\n    return (x*x*x*x) \/ d;\n  }\n  function dB(x, Qtc) {\n    var h2 = H2(x, Qtc);\n    return h2 \u003e 0 ? 10 * Math.log10(h2) : -40;\n  }\n\n  var W = 420, H = 200;\n  var PAD = { top: 12, right: 12, bottom: 32, left: 36 };\n  var plotW = W - PAD.left - PAD.right;\n  var plotH = H - PAD.top - PAD.bottom;\n\n  var fMin = 15, fMax = 300;\n  var dbMin = -18, dbMax = 6;\n\n  function fToX(f) {\n    return PAD.left + (Math.log10(f) - Math.log10(fMin)) \/ (Math.log10(fMax) - Math.log10(fMin)) * plotW;\n  }\n  function dbToY(db) {\n    return PAD.top + (1 - (db - dbMin) \/ (dbMax - dbMin)) * plotH;\n  }\n\n  function drawGraph(svgId, curves) {\n    var svg = document.getElementById(svgId);\n    if (!svg) return;\n    var ns = 'http:\/\/www.w3.org\/2000\/svg';\n\n    \/\/ Background\n    var bg = document.createElementNS(ns, 'rect');\n    bg.setAttribute('x', PAD.left); bg.setAttribute('y', PAD.top);\n    bg.setAttribute('width', plotW); bg.setAttribute('height', plotH);\n    bg.setAttribute('fill', '#0f0f0f');\n    svg.appendChild(bg);\n\n    \/\/ Grid lines and labels\n    var dbGrids = [-12, -9, -6, -3, 0, 3];\n    dbGrids.forEach(function(db) {\n      var y = dbToY(db);\n      var line = document.createElementNS(ns, 'line');\n      line.setAttribute('x1', PAD.left); line.setAttribute('x2', PAD.left + plotW);\n      line.setAttribute('y1', y); line.setAttribute('y2', y);\n      line.setAttribute('stroke', db === 0 ? '#52525b' : '#27272a');\n      line.setAttribute('stroke-width', db === 0 ? '1.5' : '1');\n      svg.appendChild(line);\n      var lbl = document.createElementNS(ns, 'text');\n      lbl.setAttribute('x', PAD.left - 4); lbl.setAttribute('y', y + 4);\n      lbl.setAttribute('text-anchor', 'end');\n      lbl.setAttribute('font-size', '9');\n      lbl.setAttribute('fill', '#71717a');\n      lbl.textContent = db + 'dB';\n      svg.appendChild(lbl);\n    });\n\n    \/\/ -3dB reference line (dashed)\n    var ref3 = document.createElementNS(ns, 'line');\n    var y3 = dbToY(-3);\n    ref3.setAttribute('x1', PAD.left); ref3.setAttribute('x2', PAD.left + plotW);\n    ref3.setAttribute('y1', y3); ref3.setAttribute('y2', y3);\n    ref3.setAttribute('stroke', '#d71920'); ref3.setAttribute('stroke-width', '1');\n    ref3.setAttribute('stroke-dasharray', '4 3'); ref3.setAttribute('opacity', '0.5');\n    svg.appendChild(ref3);\n\n    \/\/ Freq grid lines\n    var fGrids = [20, 30, 40, 50, 60, 80, 100, 150, 200, 300];\n    var fLabels = [20, 30, 50, 100, 200];\n    fGrids.forEach(function(f) {\n      var x = fToX(f);\n      var gl = document.createElementNS(ns, 'line');\n      gl.setAttribute('x1', x); gl.setAttribute('x2', x);\n      gl.setAttribute('y1', PAD.top); gl.setAttribute('y2', PAD.top + plotH);\n      gl.setAttribute('stroke', '#27272a'); gl.setAttribute('stroke-width', '1');\n      svg.appendChild(gl);\n    });\n    fLabels.forEach(function(f) {\n      var x = fToX(f);\n      var lbl = document.createElementNS(ns, 'text');\n      lbl.setAttribute('x', x); lbl.setAttribute('y', PAD.top + plotH + 14);\n      lbl.setAttribute('text-anchor', 'middle');\n      lbl.setAttribute('font-size', '9'); lbl.setAttribute('fill', '#71717a');\n      lbl.textContent = f + 'Hz';\n      svg.appendChild(lbl);\n    });\n\n    \/\/ Plot border\n    var border = document.createElementNS(ns, 'rect');\n    border.setAttribute('x', PAD.left); border.setAttribute('y', PAD.top);\n    border.setAttribute('width', plotW); border.setAttribute('height', plotH);\n    border.setAttribute('fill', 'none');\n    border.setAttribute('stroke', '#3f3f46'); border.setAttribute('stroke-width', '1');\n    svg.appendChild(border);\n\n    \/\/ Curves\n    curves.forEach(function(curve) {\n      var pts = [];\n      var steps = 300;\n      for (var i = 0; i \u003c= steps; i++) {\n        var f = fMin * Math.pow(fMax \/ fMin, i \/ steps);\n        var x = f \/ curve.fc;\n        var db = dB(x, curve.Qtc);\n        if (db \u003c dbMin) db = dbMin;\n        if (db \u003e dbMax) db = dbMax;\n        pts.push(fToX(f).toFixed(1) + ',' + dbToY(db).toFixed(1));\n      }\n      var path = document.createElementNS(ns, 'polyline');\n      path.setAttribute('points', pts.join(' '));\n      path.setAttribute('fill', 'none');\n      path.setAttribute('stroke', curve.color);\n      path.setAttribute('stroke-width', curve.width || '1.8');\n      path.setAttribute('stroke-linejoin', 'round');\n      if (curve.dash) path.setAttribute('stroke-dasharray', curve.dash);\n      svg.appendChild(path);\n    });\n  }\n\n  drawGraph('arc8-d2-graph', [\n    { Qtc: 0.699, fc: 59.8, color: '#ef4444', width: '1.5', dash: '5 3' },\n    { Qtc: 0.632, fc: 54.0, color: '#4ade80', width: '2.2' },\n    { Qtc: 0.585, fc: 50.0, color: '#60a5fa', width: '1.5', dash: '5 3' }\n  ]);\n\n  drawGraph('arc8-d4-graph', [\n    { Qtc: 0.774, fc: 52.9, color: '#ef4444', width: '1.5', dash: '5 3' },\n    { Qtc: 0.700, fc: 47.9, color: '#4ade80', width: '2.2' },\n    { Qtc: 0.649, fc: 44.4, color: '#60a5fa', width: '1.5', dash: '5 3' }\n  ]);\n\n})();\n\u003c\/script\u003e\n\n\u003cdiv style=\"background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #e4e4e7 !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eReady to build? The \u003cstrong style=\"color: #ffffff !important;\"\u003eEnclosures tab above\u003c\/strong\u003e lists the Proline X sealed enclosures we build specifically for this driver, CNC-cut in Tullahoma, Tennessee to the dimensions the numbers above call for.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Arc Audio","offers":[{"title":"Dual 2 Ohm","offer_id":40328347910233,"sku":"ARC8 D2","price":239.0,"currency_code":"USD","in_stock":true},{"title":"Dual 4 Ohm","offer_id":40328347943001,"sku":"ARC8 D4","price":239.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/products\/arc-audio-arc-series-8-inch-subwoofersubwooferarc-audio-645810.webp?v=1761969162"},{"product_id":"jl-audio-10tw3-d4","title":"JL Audio 10TW3-D4","description":"\u003cstyle\u003e\n  .jl-wrap { max-width: 100%; font-family: inherit; color: #d1d5db !important; }\n  .jl-hero { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #16a34a !important; }\n  .jl-eyebrow { color: #9ca3af !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .jl-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .jl-hero p { color: #d1d5db !important; font-size: 16px; margin: 0 0 18px 0; }\n  .jl-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .jl-badge { background: #16a34a !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .jl-badge-alt { background: #1f2937 !important; color: #d1d5db !important; border: 1px solid #374151 !important; }\n  .jl-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #16a34a !important; padding-left: 12px; }\n  .jl-wrap p { color: #d1d5db !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .jl-callout { background: #1f2937 !important; border: 1px solid #374151 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .jl-callout p { color: #d1d5db !important; margin: 0; }\n  .jl-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .jl-stat { background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .jl-stat .jl-statnum { color: #4ade80 !important; font-size: 22px; font-weight: 700; display: block; }\n  .jl-stat .jl-statlabel { color: #9ca3af !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .jl-cta { background: #111827 !important; border: 1px solid #1f2937 !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #16a34a !important; }\n  .jl-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .jl-cta p { color: #d1d5db !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"jl-wrap\"\u003e\n\n  \u003cdiv class=\"jl-hero\"\u003e\n    \u003cp class=\"jl-eyebrow\"\u003eJL Audio TW3 Thin-Line Series\u003c\/p\u003e\n    \u003ch2\u003eJL Audio 10TW3-D4 10 Inch Subwoofer\u003c\/h2\u003e\n    \u003cp\u003e400 watts RMS from 3.25 inches of mounting depth. The 10TW3-D4 uses JL Audio's patented Thin-Line technology to deliver 15.2mm of one-way Xmax, a Polymer\/Mica composite cone, and a cast alloy frame in enclosures as small as 0.50 cubic feet.\u003c\/p\u003e\n    \u003cdiv class=\"jl-badges\"\u003e\n      \u003cspan class=\"jl-badge\"\u003e400W RMS\u003c\/span\u003e\n      \u003cspan class=\"jl-badge\"\u003e3.25 in Depth\u003c\/span\u003e\n      \u003cspan class=\"jl-badge\"\u003e15.2mm Xmax\u003c\/span\u003e\n      \u003cspan class=\"jl-badge jl-badge-alt\"\u003eDual 4-Ohm\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003ePatented Thin-Line Technology\u003c\/h3\u003e\n  \u003cp\u003eStandard subwoofer designs require the motor structure to sit below the cone assembly, which is why conventional 10 inch drivers need 5 to 7 inches of mounting depth. JL Audio's patented Thin-Line design inverts this geometry using a concentric tube structure built into the injection-molded cone body. This structure supports the voice coil and a full annular spider while allowing the motor to be positioned further forward in the frame than conventional designs permit. The result is 3.25 inches of mounting depth with 15.2mm of one-way linear Xmax, an excursion capability JL Audio notes exceeds their standard-depth W3v3 series.\u003c\/p\u003e\n  \u003cp\u003eThe tab-ear mounting system accommodates a range of installation methods and maximizes usable cone area within the mounting footprint, which matters when enclosure dimensions are tight.\u003c\/p\u003e\n\n  \u003cdiv class=\"jl-statgrid\"\u003e\n    \u003cdiv class=\"jl-stat\"\u003e\n\u003cspan class=\"jl-statnum\"\u003e3.25 in\u003c\/span\u003e\u003cspan class=\"jl-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"jl-stat\"\u003e\n\u003cspan class=\"jl-statnum\"\u003e15.2mm\u003c\/span\u003e\u003cspan class=\"jl-statlabel\"\u003eXmax\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"jl-stat\"\u003e\n\u003cspan class=\"jl-statnum\"\u003e400W\u003c\/span\u003e\u003cspan class=\"jl-statlabel\"\u003eRMS Power\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"jl-stat\"\u003e\n\u003cspan class=\"jl-statnum\"\u003e0.50\u003c\/span\u003e\u003cspan class=\"jl-statlabel\"\u003eCu Ft Optimum\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003e15.2mm Xmax in 3.25 Inches\u003c\/h3\u003e\n  \u003cp\u003eShallow-mount subwoofers typically trade excursion for depth. Less mounting depth means less space for the voice coil former, which reduces how far the cone can travel linearly before distortion. JL Audio's concentric tube design breaks that tradeoff. The 10TW3-D4's 15.2mm one-way Xmax is not just competitive for a shallow-mount driver; it exceeds the W3v3 series, JL Audio's standard-depth predecessor, in linear excursion capability. That is the engineering payoff of Thin-Line technology applied to a real product.\u003c\/p\u003e\n  \u003cp\u003eThe Polymer\/Mica composite cone provides the stiffness-to-weight balance needed to take advantage of that excursion without introducing resonance modes at the higher frequencies where the TW3 operates when integrating with a front stage.\u003c\/p\u003e\n\n  \u003ch3\u003eOptimized for Small Sealed Enclosures\u003c\/h3\u003e\n  \u003cp\u003eJL Audio designed the TW3 series specifically for small enclosures. The optimum sealed volume is 0.50 cubic feet, which is compact enough to fit under most truck and SUV rear seats with enclosure heights as shallow as 4 to 4.5 inches total. The no-pole-vent motor design allows the driver to mount with minimal rear clearance, 0.25 inches is sufficient, which maximizes every available inch of internal enclosure volume. The Thin-Line motor has no center vent that could be blocked by a close rear wall.\u003c\/p\u003e\n\n  \u003ch3\u003ePorted Option\u003c\/h3\u003e\n  \u003cp\u003eJL Audio specifies a minimum of 0.75 cubic feet for ported enclosures, with 30 Hz as the recommended port tuning. Ported designs provide additional output in the 30-40 Hz range but require larger enclosures and add port tuning complexity. For most under-seat and shallow custom enclosure installations where the TW3 excels, sealed is the practical choice. For builds where the larger enclosure volume is available and maximum output matters, the ported option is fully supported.\u003c\/p\u003e\n\n  \u003cdiv class=\"jl-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment at a glance:\u003c\/strong\u003e mounting depth 3.25 inches, cutout 9.625 inches, overall major diameter 11.2 inches, weight 8.8 lbs. Optimum sealed 0.50 cu ft, ported minimum 0.75 cu ft. Tab-ear mounting. Minimum rear clearance 0.25 inches. Wire the dual 4-ohm voice coil parallel for 2 ohms or series for 8 ohms.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eD4 vs D8 Variants\u003c\/h3\u003e\n  \u003cp\u003eJL Audio offers the TW3 in both Dual 4-ohm (10TW3-D4) and Dual 8-ohm (10TW3-D8) configurations. Audio Intensity stocks the D4 as the most broadly compatible variant. Wired parallel, the D4 presents 2 ohms to the amplifier, which suits the majority of 1-ohm stable Class D monoblocks at full output. Wired series, it presents 8 ohms, which suits bridged 4-channel amplifiers and specific system impedance requirements. If your system requires the D8 configuration, contact Audio Intensity for availability.\u003c\/p\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eDesigned and engineered by JL Audio in Miramar, Florida. The 10TW3-D4 carries the JL Audio manufacturer warranty through authorized dealers. Audio Intensity is an authorized JL Audio dealer. Every unit we sell is brand new current production with full warranty coverage.\u003c\/p\u003e\n\n  \u003cdiv class=\"jl-cta\"\u003e\n    \u003ch3\u003eAuthorized JL Audio Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity ships the JL Audio 10TW3-D4 fast from Tullahoma, Tennessee. Tell us your vehicle, your available depth and footprint, and your amplifier and we will help you confirm the fit and spec the right enclosure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .jl-enc { max-width: 100%; font-family: inherit; }\n  .jl-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #16a34a !important; padding-left: 12px; }\n  .jl-enc p { color: #d1d5db !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .jl-enc-card { background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 10px; overflow: hidden; margin: 20px 0; }\n  .jl-enc-card-head { background: #16a34a !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .jl-enc-table { width: 100%; border-collapse: collapse; }\n  .jl-enc-table th { background: #1f2937 !important; color: #9ca3af !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .jl-enc-table td { padding: 10px 12px; border-bottom: 1px solid #1f2937 !important; font-size: 14px; }\n  .jl-enc-table td:first-child { color: #e5e7eb !important; font-weight: 600; }\n  .jl-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .jl-enc-table tr:last-child td { border-bottom: none !important; }\n  .jl-enc-table .jl-optimal td { background: #052e16 !important; }\n  .jl-enc-table .jl-optimal td:first-child { color: #4ade80 !important; }\n  .jl-char { font-size: 11px; color: #6b7280 !important; display: block; font-weight: 400; margin-top: 2px; }\n  .jl-graph-wrap { background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .jl-graph-title { color: #9ca3af !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .jl-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .jl-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #6b7280 !important; }\n  .jl-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .jl-enc-note { background: #1f2937 !important; border: 1px solid #374151 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .jl-enc-note p { color: #d1d5db !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .jl-enc-link { color: #4ade80 !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"jl-enc\"\u003e\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing JL Audio's published Thiele-Small parameters and their recommended sealed volumes, here are the predicted Qtc, system resonance (Fc), and F3 rolloff for each box size. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator. These figures align with Pacific Stereo's published JL Audio enclosure data for the 0.50 cu ft alignment.\u003c\/p\u003e\n  \u003cp\u003eThe 10TW3-D4 is a moderate-Qts driver that produces a slightly elevated Qtc in JL Audio's recommended 0.50 cu ft sealed volume. This gives the driver a warm, impactful character that works well in the under-seat and shallow-build applications it is designed for. At 0.75 cu ft the response flattens toward a more controlled alignment while still maintaining the TW3's characteristic bass presence. The F3 sits in the upper 30s across the range, solid extension for a shallow-mount 10.\u003c\/p\u003e\n\n  \u003cdiv class=\"jl-enc-card\"\u003e\n    \u003cdiv class=\"jl-enc-card-head\"\u003eDual 4-Ohm  |  Qts 0.620  |  Fs 32.3 Hz  |  Vas 19.82 L\u003c\/div\u003e\n    \u003ctable class=\"jl-enc-table\"\u003e\n      \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003ctr class=\"jl-optimal\"\u003e\n\u003ctd\u003e0.50 cu ft ★\u003cspan class=\"jl-char\"\u003eJL Audio recommended optimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.960\u003c\/td\u003e\n\u003ctd\u003e50.0 Hz\u003c\/td\u003e\n\u003ctd\u003e40.1 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e0.625 cu ft\u003cspan class=\"jl-char\"\u003eMid-range balance\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.903\u003c\/td\u003e\n\u003ctd\u003e47.0 Hz\u003c\/td\u003e\n\u003ctd\u003e38.9 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e0.75 cu ft\u003cspan class=\"jl-char\"\u003eMaximum \/ flattest response\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.862\u003c\/td\u003e\n\u003ctd\u003e44.9 Hz\u003c\/td\u003e\n\u003ctd\u003e38.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003c\/table\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"jl-graph-wrap\"\u003e\n    \u003cp class=\"jl-graph-title\"\u003eFrequency Response — Sealed\u003c\/p\u003e\n    \u003csvg viewbox=\"0 0 420 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"38\" y=\"14\" width=\"368\" height=\"152\" fill=\"#0f0f0f\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"128.0\" y2=\"128.0\" stroke=\"#111827\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"132.0\" text-anchor=\"end\" font-size=\"9\" 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x2=\"243.6\" y1=\"14\" y2=\"166\" stroke=\"#111827\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"271.0\" x2=\"271.0\" y1=\"14\" y2=\"166\" stroke=\"#111827\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"320.9\" x2=\"320.9\" y1=\"14\" y2=\"166\" stroke=\"#111827\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"356.2\" x2=\"356.2\" y1=\"14\" y2=\"166\" stroke=\"#111827\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"406.0\" x2=\"406.0\" y1=\"14\" y2=\"166\" stroke=\"#111827\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"73.3\" y=\"180\" text-anchor=\"middle\" font-size=\"9\" fill=\"#6b7280\"\u003e20Hz\u003c\/text\u003e\n\u003ctext x=\"123.1\" y=\"180\" text-anchor=\"middle\" font-size=\"9\" fill=\"#6b7280\"\u003e30Hz\u003c\/text\u003e\n\u003ctext x=\"185.9\" y=\"180\" text-anchor=\"middle\" font-size=\"9\" fill=\"#6b7280\"\u003e50Hz\u003c\/text\u003e\n\u003ctext x=\"271.0\" y=\"180\" text-anchor=\"middle\" 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334.9,50.8 336.1,50.9 337.3,50.9 338.5,50.9 339.8,50.9 341.0,50.9 342.2,51.0 343.4,51.0 344.7,51.0 345.9,51.0 347.1,51.0 348.3,51.0 349.6,51.1 350.8,51.1 352.0,51.1 353.3,51.1 354.5,51.1 355.7,51.1 356.9,51.2 358.2,51.2 359.4,51.2 360.6,51.2 361.8,51.2 363.1,51.2 364.3,51.2 365.5,51.3 366.7,51.3 368.0,51.3 369.2,51.3 370.4,51.3 371.7,51.3 372.9,51.3 374.1,51.4 375.3,51.4 376.6,51.4 377.8,51.4 379.0,51.4 380.2,51.4 381.5,51.4 382.7,51.4 383.9,51.4 385.1,51.5 386.4,51.5 387.6,51.5 388.8,51.5 390.1,51.5 391.3,51.5 392.5,51.5 393.7,51.5 395.0,51.5 396.2,51.5 397.4,51.6 398.6,51.6 399.9,51.6 401.1,51.6 402.3,51.6 403.5,51.6 404.8,51.6 406.0,51.6\" fill=\"none\" stroke=\"#22d3ee\" stroke-width=\"1.5\" stroke-linejoin=\"round\" stroke-dasharray=\"5 3\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n    \u003cdiv class=\"jl-graph-legend\"\u003e\n      \u003cspan class=\"jl-graph-legend-item\"\u003e\u003cspan class=\"jl-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.50 cu ft (Qtc 0.960) ★ JL Recommended\u003c\/span\u003e\n      \u003cspan class=\"jl-graph-legend-item\"\u003e\u003cspan class=\"jl-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.625 cu ft (Qtc 0.903)\u003c\/span\u003e\n      \u003cspan class=\"jl-graph-legend-item\"\u003e\u003cspan class=\"jl-graph-legend-swatch\" style=\"background:#22d3ee;\"\u003e\u003c\/span\u003e0.75 cu ft (Qtc 0.862)\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"jl-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#4ade80 !important;\"\u003eAbout the enclosure recommendation:\u003c\/strong\u003e JL Audio specifies 0.50 cu ft as the optimum sealed volume for the 10TW3-D4, which produces Qtc 0.960 and F3 40 Hz. This is a deliberate design choice for under-seat builds where the compact enclosure dimension is the priority. For a flatter sealed response, a larger volume approaching 1.49 cu ft achieves Butterworth alignment, but that volume largely defeats the purpose of a shallow-mount driver. For ported installations, JL Audio recommends a minimum of 0.75 cu ft tuned to 30 Hz. \u003ca class=\"jl-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #111827 !important; border: 1px solid #1f2937 !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #d1d5db !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eThe \u003cstrong style=\"color: #4ade80 !important;\"\u003eEnclosures tab above\u003c\/strong\u003e lists JL Audio Stealthbox and other enclosure options for this driver. For a custom under-seat build, contact Audio Intensity with your vehicle and available dimensions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"JL Audio","offers":[{"title":"Default Title","offer_id":40340338540633,"sku":"JL10TW3-D4","price":519.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/jl-audio-10tw3-d4subwooferjl-audio-8735188.jpg?v=1774218788"},{"product_id":"wavtech-thinpro12-12-inch-subwoofer","title":"Wāvtech thinPRO12 – Shallow-Mount 12 inch Subwoofer","description":"\u003cstyle\u003e\n  .wtp-wrap { max-width: 100%; font-family: inherit; color: #bfdbfe !important; }\n  .wtp-hero { background: #0f172a !important; border: 1px solid #1e3a5f !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #1e40af !important; }\n  .wtp-eyebrow { color: #93c5fd !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .wtp-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .wtp-hero p { color: #bfdbfe !important; font-size: 16px; margin: 0 0 18px 0; }\n  .wtp-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .wtp-badge { background: #1e40af !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .wtp-badge-alt { background: #1e293b !important; color: #bfdbfe !important; border: 1px solid #1e3a5f !important; }\n  .wtp-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #1e40af !important; padding-left: 12px; }\n  .wtp-wrap p { color: #bfdbfe !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .wtp-callout { background: #1e293b !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .wtp-callout p { color: #bfdbfe !important; margin: 0; }\n  .wtp-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .wtp-stat { background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .wtp-stat .wtp-statnum { color: #60a5fa !important; font-size: 22px; font-weight: 700; display: block; }\n  .wtp-stat .wtp-statlabel { color: #93c5fd !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .wtp-cta { background: #0f172a !important; border: 1px solid #1e3a5f !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #1e40af !important; }\n  .wtp-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .wtp-cta p { color: #bfdbfe !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"wtp-wrap\"\u003e\n\n  \u003cdiv class=\"wtp-hero\"\u003e\n    \u003cp class=\"wtp-eyebrow\"\u003eWavtech thinPRO Series\u003c\/p\u003e\n    \u003ch2\u003eWavtech thinPRO12 12 Inch Shallow-Mount Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eThree inches deep. 54mm of peak-to-peak excursion. 750 watts RMS. The patent-pending thinPRO12 has more mechanical throw than many full-depth 12 inch subwoofers, with a 5 inch voice coil on a dual-gap double-stacked motor and a Honeycomb Nomex\/Glass Fiber cone doing the work.\u003c\/p\u003e\n    \u003cdiv class=\"wtp-badges\"\u003e\n      \u003cspan class=\"wtp-badge\"\u003e750W RMS\u003c\/span\u003e\n      \u003cspan class=\"wtp-badge\"\u003e3 in Depth\u003c\/span\u003e\n      \u003cspan class=\"wtp-badge\"\u003e20mm Xmax\u003c\/span\u003e\n      \u003cspan class=\"wtp-badge wtp-badge-alt\"\u003e2 Ohm or 4 Ohm SVC\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003e54mm of Throw from 3 Inches of Depth\u003c\/h3\u003e\n  \u003cp\u003eThe specification that defines the thinPRO12 is not its depth, it is its excursion. At 54mm peak-to-peak and 20mm of one-way linear Xmax, the thinPRO12 exceeds the mechanical travel of many popular full-depth 12 inch subwoofers. That figure is the direct result of Wavtech's patent-pending dual mirrored NBR spider configuration and reinforced axial force transfer assembly, which separates cone motion mechanics from mounting depth in a way no standard shallow-mount design achieves.\u003c\/p\u003e\n  \u003cp\u003eThree inches of mounting depth is thin enough to fit behind seats in crew cab trucks, under rear seat platforms in SUVs, in cargo corners of hatches, and in factory locations where a 5 inch subwoofer previously could not go. The thinPRO12 fills those spaces with genuine 12 inch cone area and genuine 12 inch output, not a compromise.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-statgrid\"\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e3 in\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e54mm\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003ePeak-to-Peak Xmech\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e750W\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003eRMS Power\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e28 Hz\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003eF3 Ported\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eDual-Gap Motor with Double-Stacked Strontium Magnets\u003c\/h3\u003e\n  \u003cp\u003eThe FEA-optimized dual-gap motor structure uses double-stacked strontium ferrite magnets to maximize flux density across both gaps simultaneously. Two voice coil windings interact with two separate magnetic fields, which increases total motor force without requiring the motor assembly to be taller. This is how Wavtech achieves 750 watts RMS of power handling and 20mm of linear Xmax from a motor package that fits within 3 inches of total mounting depth. It is a fundamentally different motor architecture from a standard single-gap shallow-mount driver, not an incremental improvement.\u003c\/p\u003e\n\n  \u003ch3\u003e5 Inch Voice Coil on Vented Polyimide Former\u003c\/h3\u003e\n  \u003cp\u003eThe 5 inch (127mm) voice coil is larger than the coil in most standard-depth 12 inch subwoofers. A larger coil diameter means more conductor length in the magnetic field, more motor force per unit current, and more surface area in contact with the gap air for heat dissipation. The 4-layer high-temperature winding on a vented polyimide composite former allows heat to escape the coil gap through the vent structure, which is what supports 750 watts RMS continuous operation. Polyimide handles sustained high temperatures without degrading, whereas Nomex formers used in budget drivers begin to lose dimensional stability under sustained high-power thermal load.\u003c\/p\u003e\n\n  \u003ch3\u003eHoneycomb Nomex and Glass Fiber Cone\u003c\/h3\u003e\n  \u003cp\u003eThe composite honeycomb cone uses a Nomex fabric honeycomb core sandwiched with glass fiber skins. This construction provides exceptional stiffness-to-weight ratio: the cone is rigid enough to act as a true piston through the 20mm excursion range without flexing, while light enough that the 5 inch motor can accelerate it quickly. Cone breakup modes that introduce distortion in paper or polypropylene cones are pushed to frequencies well outside the subwoofer's operating range. The result is cleaner bass with lower distortion at high output levels.\u003c\/p\u003e\n\n  \u003ch3\u003eSmall Boxes, Real Extension\u003c\/h3\u003e\n  \u003cp\u003eWith Fs at 25 Hz (thinPRO12-2) and 26 Hz (thinPRO12-4), the thinPRO12 starts rolling off lower than nearly any comparable shallow-mount design. In the preferred 0.6 cubic foot sealed enclosure, F3 is 39 Hz for the 2-ohm variant and 42 Hz for the 4-ohm, both of which are exceptional for a 3 inch deep driver. The preferred ported alignment at 1.0 cubic foot tuned to 31 Hz reaches F3 at 28 Hz, genuine sub-30 Hz extension from a box as little as 6 inches deep overall. Wavtech publishes complete cut lists for both enclosures in the owner's manual.\u003c\/p\u003e\n\n  \u003ch3\u003e2 Ohm or 4 Ohm: Single Voice Coil\u003c\/h3\u003e\n  \u003cp\u003eThe thinPRO12 is a single voice coil design available in two impedances. The thinPRO12-2 presents 2 ohms to the amplifier. The thinPRO12-4 presents 4 ohms. Running two thinPRO12-2 subwoofers in parallel presents 1 ohm; two thinPRO12-4 in parallel presents 2 ohms. Choose based on your amplifier's preferred load and how many drivers the system includes. The thinPRO12-4 wired series with a second thinPRO12-4 presents 8 ohms for bridged 4-channel applications.\u003c\/p\u003e\n\n  \u003ch3\u003eProline X Enclosures for the thinPRO12\u003c\/h3\u003e\n  \u003cp\u003eAudio Intensity CNC-cuts Proline X Micro Series enclosures specifically for the Wavtech thinPRO12 in Tullahoma, Tennessee. Single 12 and dual 12 sealed configurations are available loaded with the thinPRO12 or as enclosure-only options. Vehicle-specific behind-seat enclosures for 2015-2023 and 2024-2025 Ford F-150\/F-250 are also available. These are not generic enclosures modified to fit the driver; they are built to the thinPRO12's specifications from the start.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment at a glance:\u003c\/strong\u003e mounting depth 3.0 inches, cutout 11.125 inches (standard 12 inch cutout), overall diameter with gasket 13.0625 inches, driver displacement 0.042 cu ft. The reverse-mountable gasket and trim ring provide installation flexibility when every fraction of depth counts. No rear clearance required.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eWavtech covers the thinPRO12 with a 1-year warranty through authorized dealers, extended to 2 years when installed by an authorized Wavtech dealer. Audio Intensity is an authorized dealer. Every unit we sell is brand new current production with full warranty coverage and lifetime tech support.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-cta\"\u003e\n    \u003ch3\u003eAuthorized Wavtech Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity stocks the Wavtech thinPRO12 in both 2-ohm and 4-ohm versions and ships fast from Tullahoma, Tennessee. Tell us your vehicle, your amplifier, and your available space and we will help you spec the right enclosure from our lineup or build one custom.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .wtp-enc { max-width: 100%; font-family: inherit; }\n  .wtp-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #1e40af !important; padding-left: 12px; }\n  .wtp-enc p { color: #bfdbfe !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .wtp-enc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }\n  @media (max-width: 640px) { .wtp-enc-grid { grid-template-columns: 1fr; } }\n  .wtp-enc-card { background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 10px; overflow: hidden; }\n  .wtp-enc-card-head { background: #1e40af !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .wtp-enc-table { width: 100%; border-collapse: collapse; }\n  .wtp-enc-table th { background: #1e3a5f !important; color: #93c5fd !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .wtp-enc-table td { padding: 10px 12px; border-bottom: 1px solid #1e3a5f !important; font-size: 14px; }\n  .wtp-enc-table td:first-child { color: #bfdbfe !important; font-weight: 600; }\n  .wtp-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .wtp-enc-table tr:last-child td { border-bottom: none !important; }\n  .wtp-enc-table .wtp-optimal td { background: #172554 !important; }\n  .wtp-enc-table .wtp-optimal td:first-child { color: #4ade80 !important; }\n  .wtp-char { font-size: 11px; color: #4b6fa5 !important; display: block; font-weight: 400; margin-top: 2px; }\n  .wtp-graph-wrap { background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .wtp-graph-title { color: #93c5fd !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .wtp-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .wtp-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #4b6fa5 !important; }\n  .wtp-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .wtp-enc-note { background: #1e293b !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .wtp-enc-note p { color: #bfdbfe !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .wtp-enc-link { color: #60a5fa !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"wtp-enc\"\u003e\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing Wavtech's published Thiele-Small parameters from the thinPRO12 owner's manual, here are the predicted Qtc, system resonance (Fc), and F3 rolloff for both variants across three sealed volumes. These calculated values match Wavtech's published enclosure data: at the recommended 0.6 cu ft optimum, the thinPRO12-2 produces F3 at 38-39 Hz and the thinPRO12-4 at 41-42 Hz, consistent with the manual's published figures.\u003c\/p\u003e\n  \u003cp\u003eThe low Qts values (0.49 D2 \/ 0.46 D4) mean both variants produce controlled, near-Butterworth alignments in the recommended sealed volume. This is unusual for a shallow-mount driver and is part of what separates the thinPRO12's bass character from typical shallow-mount designs. For maximum output and deeper extension, Wavtech's 1.0 cu ft ported alignment at 31 Hz reaches F3 at 28 Hz.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-enc-grid\"\u003e\n    \u003cdiv class=\"wtp-enc-card\"\u003e\n      \u003cdiv class=\"wtp-enc-card-head\"\u003ethinPRO12-2  |  Qts 0.49  |  Fs 25 Hz  |  Vas 42 L\u003c\/div\u003e\n      \u003ctable class=\"wtp-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.40 cu ft\u003cspan class=\"wtp-char\"\u003eCompact minimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.063\u003c\/td\u003e\n\u003ctd\u003e54.2 Hz\u003c\/td\u003e\n\u003ctd\u003e41.6 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"wtp-optimal\"\u003e\n\u003ctd\u003e0.60 cu ft ★\u003cspan class=\"wtp-char\"\u003eWavtech recommended optimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.913\u003c\/td\u003e\n\u003ctd\u003e46.6 Hz\u003c\/td\u003e\n\u003ctd\u003e38.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.00 cu ft\u003cspan class=\"wtp-char\"\u003eMaximum sealed \/ flattest response\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.772\u003c\/td\u003e\n\u003ctd\u003e39.4 Hz\u003c\/td\u003e\n\u003ctd\u003e36.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"wtp-enc-card\"\u003e\n      \u003cdiv class=\"wtp-enc-card-head\"\u003ethinPRO12-4  |  Qts 0.46  |  Fs 26 Hz  |  Vas 42 L\u003c\/div\u003e\n      \u003ctable class=\"wtp-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.40 cu ft\u003cspan class=\"wtp-char\"\u003eCompact minimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.998\u003c\/td\u003e\n\u003ctd\u003e56.4 Hz\u003c\/td\u003e\n\u003ctd\u003e44.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"wtp-optimal\"\u003e\n\u003ctd\u003e0.60 cu ft ★\u003cspan class=\"wtp-char\"\u003eWavtech recommended optimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.857\u003c\/td\u003e\n\u003ctd\u003e48.4 Hz\u003c\/td\u003e\n\u003ctd\u003e41.4 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.00 cu ft\u003cspan class=\"wtp-char\"\u003eMaximum sealed \/ flattest response\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.725\u003c\/td\u003e\n\u003ctd\u003e41.0 Hz\u003c\/td\u003e\n\u003ctd\u003e40.0 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"wtp-enc-grid\"\u003e\n    \u003cdiv class=\"wtp-graph-wrap\"\u003e\n      \u003cp 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★\u003c\/span\u003e\n        \u003cspan class=\"wtp-graph-legend-item\"\u003e\u003cspan class=\"wtp-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e1.00 cu ft (Qtc 0.725)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"wtp-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#60a5fa !important;\"\u003ePorted alignment:\u003c\/strong\u003e Wavtech's preferred 1.0 cu ft ported enclosure tuned to 31 Hz reaches F3 at 28 Hz for both variants. Minimum port area is 15.9 sq in (4.5 inch round equivalent). A subsonic filter set at or below the tuning frequency is required. Every Wavtech bassFREQ-equipped amplifier includes a built-in subsonic filter. The thinPRO12 owner's manual includes complete cut lists and port dimensions for both the 0.6 cu ft sealed and 1.0 cu ft ported preferred enclosures. \u003ca class=\"wtp-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own sealed numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #bfdbfe !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eThe \u003cstrong style=\"color: #60a5fa !important;\"\u003eEnclosures tab above\u003c\/strong\u003e lists the Proline X Micro Series enclosures we CNC-cut in Tullahoma, Tennessee specifically for the thinPRO12, including single and dual 12 inch sealed configurations and vehicle-specific Ford truck enclosures.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Wavtech","offers":[{"title":"2 Ohm","offer_id":42207698190425,"sku":"thinPRO 12-2","price":899.99,"currency_code":"USD","in_stock":true},{"title":"4 Ohm","offer_id":42207698223193,"sku":"thinPRO12-4","price":899.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/wavtech-thinpro12-shallow-mount-12-inch-subwoofersubwooferwavtech-4584033.jpg?v=1774218492"},{"product_id":"alpine-shallow-10-inch-subwoofer-rsw10d4","title":"Alpine Shallow 10 Inch Subwoofer: Powerhouse Bass in a Space-Saving Design","description":"\u003cstyle\u003e\n.alpine-container {\n  background: linear-gradient(135deg, #c0d4e8 0%, #8ba8c7 50%, #5a7a99 100%);\n  border-radius: 15px;\n  padding: 40px;\n  margin: 30px 0;\n  box-shadow: 0 8px 25px rgba(90, 122, 153, 0.3);\n  color: #ffffff;\n}\n\n.alpine-header {\n  background: linear-gradient(135deg, #4a6885 0%, #2a4560 100%);\n  color: #ffffff;\n  padding: 50px 30px;\n  border-radius: 15px;\n  text-align: center;\n  margin-bottom: 40px;\n  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color: #2a4560;\n  font-size: 1.3em;\n  margin-top: 0;\n  margin-bottom: 12px;\n  font-weight: 700;\n}\n\n.alpine-cta {\n  background: linear-gradient(135deg, #4a6885 0%, #2a4560 100%);\n  color: #ffffff;\n  padding: 45px;\n  border-radius: 15px;\n  text-align: center;\n  margin: 40px 0;\n  box-shadow: 0 8px 25px rgba(42, 69, 96, 0.4);\n}\n\n.alpine-cta h3 {\n  font-size: 2.2em;\n  margin-top: 0;\n  margin-bottom: 20px;\n  font-weight: 800;\n  letter-spacing: 2px;\n}\n\n.alpine-warning {\n  background: linear-gradient(135deg, #fff4e6 0%, #ffe8cc 100%);\n  border-left: 6px solid #ff9800;\n  padding: 25px;\n  margin: 25px 0;\n  border-radius: 8px;\n  color: #663c00;\n  box-shadow: 0 4px 15px rgba(255, 152, 0, 0.2);\n}\n\n@media (max-width: 768px) {\n  .alpine-header h1 {\n    font-size: 2em;\n  }\n  \n  .alpine-header h2 {\n    font-size: 1.3em;\n  }\n  \n  .alpine-feature-grid {\n    grid-template-columns: 1fr;\n  }\n  \n  .alpine-container {\n    padding: 20px;\n  }\n  \n  .alpine-spec-table, .alpine-comparison-table {\n    font-size: 0.9em;\n  }\n  \n  .alpine-spec-table th, .alpine-spec-table td,\n  .alpine-comparison-table th, .alpine-comparison-table td {\n    padding: 10px 8px;\n  }\n}\n\n@media (max-width: 480px) {\n  .alpine-header h1 {\n    font-size: 1.5em;\n    letter-spacing: 1px;\n  }\n  \n  .alpine-header h2 {\n    font-size: 1.1em;\n  }\n  \n  .alpine-power-badge {\n    font-size: 1em;\n    padding: 8px 15px;\n  }\n}\n\u003c\/style\u003e\n\u003cdiv style=\"font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; line-height: 1.8; color: #333; max-width: 1200px; margin: 0 auto; padding: 20px; background: linear-gradient(135deg, #e8eef2 0%, #f5f7fa 100%);\"\u003e\n\u003cdiv class=\"alpine-header\"\u003e\n\u003ch2\u003e🏔️ \u003cspan style=\"color: rgb(255, 255, 255);\"\u003e\u003cstrong\u003eALPINE R-SERIES RSW10D4\u003c\/strong\u003e\u003c\/span\u003e 🏔️\u003c\/h2\u003e\n\u003ch2\u003e\u003cspan style=\"color: rgb(255, 255, 255);\"\u003e10\" Shallow-Mount Subwoofer\u003c\/span\u003e\u003c\/h2\u003e\n\u003cdiv style=\"margin-top: 25px;\"\u003e\n\u003cspan class=\"alpine-power-badge\"\u003e⚡ 600W RMS ⚡\u003c\/span\u003e \u003cspan class=\"alpine-power-badge\"\u003e🔬 GEN2 DD-LINEAR 🔬\u003c\/span\u003e \u003cspan class=\"alpine-power-badge\"\u003e🏆 20MM XMAX 🏆\u003c\/span\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.3em; margin-top: 25px; font-weight: 300; letter-spacing: 1px;\"\u003e57 Years of Japanese Precision Engineering\u003c\/p\u003e\n\u003cp style=\"font-size: 1.5em; margin-top: 15px; font-weight: bold; color: #d4af37; text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);\"\u003eCATEGORY-LEADING POWER \u0026amp; EXCURSION\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 style=\"font-size: 2.5em; margin-top: 0; text-align: center; text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);\"\u003eWelcome to Alpine Electronics: Where Japanese Precision Meets Accessible Excellence\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.2em; line-height: 1.9;\"\u003eAudio Intensity is proud to present the \u003cstrong\u003eAlpine R-Series RSW10D4 10\" Shallow-Mount Subwoofer\u003c\/strong\u003e—a paradigm-shifting product that introduces \u003cstrong\u003eAlpine Electronics\u003c\/strong\u003e as the \u003cstrong\u003e11th brand\u003c\/strong\u003e in our premium car audio catalog and the \u003cstrong\u003efirst Japanese manufacturer\u003c\/strong\u003e to join our carefully curated collection. This momentous addition represents more than just another product listing; it signifies the arrival of a legendary engineering philosophy that has defined automotive audio excellence for \u003cstrong\u003e57 years\u003c\/strong\u003e, blending uncompromising technical innovation with mass-market accessibility in ways that few manufacturers have ever achieved.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.2em; line-height: 1.9;\"\u003eFounded in \u003cstrong\u003e1967 as Alps-Motorola Inc.\u003c\/strong\u003e—a joint venture between \u003cstrong\u003eAlps Electric of Japan\u003c\/strong\u003e (now Alps Alpine Co., Ltd., one of the world's premier electronic component manufacturers) and \u003cstrong\u003eMotorola USA\u003c\/strong\u003e—Alpine Electronics was born from a vision to bring Japanese precision engineering to the automotive electronics market. When Alps Electric acquired Motorola's share in \u003cstrong\u003e1978\u003c\/strong\u003e, the company was reborn as \u003cstrong\u003eAlpine Electronics, Inc.\u003c\/strong\u003e, establishing its engineering headquarters in Iwaki, Fukushima Prefecture, Japan, where the relentless pursuit of sonic perfection and manufacturing excellence continues to this day. As a wholly owned subsidiary of \u003cstrong\u003eAlps Alpine Co., Ltd. (6770:JP)\u003c\/strong\u003e—a company renowned for producing precision components for industries ranging from automotive to consumer electronics to industrial equipment—Alpine inherits a legacy of component-level expertise that translates directly into subwoofer design superiority.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.2em; line-height: 1.9;\"\u003eWhat distinguishes Alpine Electronics in the premium car audio marketplace is a philosophy that few manufacturers have successfully implemented: \u003cstrong\u003ecombining advanced engineering with competitive pricing to make high-performance audio accessible to mainstream enthusiasts\u003c\/strong\u003e. While many brands pursue either mass-market affordability (sacrificing performance) or boutique exclusivity (limiting accessibility through premium pricing), Alpine occupies a unique position—delivering \u003cstrong\u003eOEM-quality engineering\u003c\/strong\u003e (the company maintains partnerships with major automotive manufacturers worldwide) at price points that don't require enthusiasts to choose between mortgage payments and superior bass response. This democratic approach to audio excellence has earned Alpine a reputation as the manufacturer that proves \u003cstrong\u003eyou don't need to spend flagship prices to achieve flagship performance\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.2em; line-height: 1.9;\"\u003eThe \u003cstrong\u003eRSW10D4\u003c\/strong\u003e you're examining represents Alpine's \u003cstrong\u003eR-Series\u003c\/strong\u003e shallow-mount subwoofer line, engineered specifically for installations where mounting depth restrictions would eliminate conventional deep-mount designs from consideration. Featuring a mere \u003cstrong\u003e3.25-inch (82.55mm) mounting depth\u003c\/strong\u003e, this subwoofer fits under seats, behind seats, in custom enclosures, and in factory subwoofer locations where space comes at a premium—yet it absolutely \u003cstrong\u003edominates\u003c\/strong\u003e the shallow-mount 10-inch category with specifications that rewrite expectations for what \"shallow\" can achieve.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-tech-box\"\u003e\n\u003ch3\u003e🏆 CATEGORY LEADERSHIP: 600W RMS POWER HANDLING 🏆\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eLet's address the elephant in the room—or more accurately, the \u003cstrong\u003epower monster in the shallow enclosure\u003c\/strong\u003e. The Alpine RSW10D4 is rated for \u003cstrong\u003e600 watts RMS continuous power handling\u003c\/strong\u003e with \u003cstrong\u003e1800 watts peak power capacity\u003c\/strong\u003e, establishing it as the \u003cstrong\u003eMOST POWERFUL\u003c\/strong\u003e shallow-mount 10-inch subwoofer documented in Audio Intensity's extensive premium catalog spanning 11 brands and 48+ products.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eTo understand the magnitude of this achievement, consider the competitive landscape. The recently documented \u003cstrong\u003eJL Audio 10TW3-D4\u003c\/strong\u003e—a premium shallow-mount design priced at \u003cstrong\u003e$519 MSRP\u003c\/strong\u003e and featuring JL Audio's legendary patented Thin-Line technology refined over 50 years—is rated for 400 watts RMS. The equally recent \u003cstrong\u003eKicker CompRT 10\"\u003c\/strong\u003e—a mainstream value option priced at \u003cstrong\u003e$199.99\u003c\/strong\u003e featuring Kicker's proprietary SoloKon technology and Forced-Air Cooling—is also rated for 400 watts RMS. Industry-standard shallow-mount designs from other respected manufacturers typically cluster in the 300-400 watt RMS range, accepting power handling limitations as an unavoidable compromise inherent to shallow-mount architecture.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe Alpine RSW10D4 \u003cstrong\u003eshatters this paradigm\u003c\/strong\u003e with 600 watts RMS—a \u003cstrong\u003e50% power advantage\u003c\/strong\u003e over the JL Audio and Kicker benchmarks and a \u003cstrong\u003e100% advantage\u003c\/strong\u003e over entry-level shallow designs rated at 300 watts RMS. This isn't marketing hyperbole or inflated peak power specifications masquerading as continuous ratings. This is \u003cstrong\u003egenuine RMS continuous power handling\u003c\/strong\u003e from a manufacturer with a 57-year reputation for conservative, honest specifications backed by OEM-level testing protocols inherited from Alps Alpine's automotive component division.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eWhat does 600 watts RMS mean in practical terms?\u003c\/strong\u003e It means you can pair this shallow-mount subwoofer with amplifiers that would overpower competing designs, extracting bass output levels that rival many standard-depth 10-inch subwoofers while maintaining the space-saving 3.25-inch mounting depth profile. It means headroom—the ability to reproduce dynamic bass passages without compression, without distortion, without thermal limiting, even during extended high-output listening sessions. It means authority—the kind of effortless bass response that doesn't sound like it's working hard, because the driver isn't approaching its thermal or mechanical limits during normal operation. And perhaps most importantly, it means \u003cstrong\u003elongevity\u003c\/strong\u003e—a subwoofer operating well within its power handling envelope will outlive one constantly pushed to its thermal and mechanical limits by decades.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThis power handling superiority isn't achieved through wishful thinking or creative specification writing. It's the direct result of \u003cstrong\u003eengineering decisions\u003c\/strong\u003e that define the RSW10D4's architecture, which we'll explore in depth throughout this product description.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e🔬 Gen2 DD-Linear Magnetic Circuit: The Engineering Foundation 🔬\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eAt the heart of the Alpine RSW10D4's category-leading performance lies a proprietary motor design that represents Alpine's response to one of the most persistent challenges in shallow-mount subwoofer engineering: \u003cstrong\u003ehow to generate sufficient magnetic force and motor control in a compressed architecture\u003c\/strong\u003e without resorting to massive, heavy magnets that would defeat the purpose of shallow-mount design.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eAlpine's solution is the \u003cstrong\u003eGen2 DD-Linear Magnetic Circuit\u003c\/strong\u003e—a second-generation dual-gap voice coil motor structure that fundamentally reimagines how magnetic flux interacts with the voice coil throughout its excursion range. To understand why this matters, we need to briefly examine conventional shallow-mount motor designs and their inherent limitations.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eConventional single-gap motor structures\u003c\/strong\u003e feature a voice coil that moves within a single magnetic gap formed by the pole piece and top plate. As the voice coil excurses (moves in and out during operation), portions of the coil move outside the optimum magnetic field zone, reducing motor efficiency and introducing nonlinear distortion artifacts. This nonlinearity becomes more pronounced as excursion increases—precisely when you need maximum motor control to prevent the driver from exceeding its mechanical limits. In shallow-mount designs where mounting depth restrictions limit magnet size and overall motor assembly dimensions, these linearity compromises become even more acute.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe \u003cstrong\u003eGen2 DD-Linear (Dual-Gap) architecture\u003c\/strong\u003e addresses this fundamental limitation by creating \u003cstrong\u003etwo optimized magnetic gaps\u003c\/strong\u003e instead of one, effectively doubling the voice coil's interaction with focused magnetic flux throughout its excursion range. This dual-gap structure provides several critical performance advantages:\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eGen2 DD-Linear Performance Advantages:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Motor Linearity:\u003c\/strong\u003e The voice coil remains within optimized magnetic flux zones throughout excursion, maintaining consistent motor force from zero excursion to maximum displacement. This translates to lower distortion, more precise bass reproduction, and better transient response compared to single-gap designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Control Authority:\u003c\/strong\u003e Dual gaps provide stronger magnetic damping throughout the excursion range, giving the motor greater control over cone movement. This prevents overshoot, reduces ringing, and maintains tight, articulate bass response even during complex musical passages with rapid bass transients.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact High-Performance Architecture:\u003c\/strong\u003e By optimizing magnetic flux distribution across two gaps rather than relying on a single massive gap, Alpine achieves high motor force in a shallow mounting depth profile. You get strong magnetic control without the weight and depth penalties of conventional high-force motor designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Distortion Artifacts:\u003c\/strong\u003e Linear motor force throughout excursion minimizes harmonic and intermodulation distortion products. The bass you hear is the bass in your music—not the bass your subwoofer adds through nonlinear motor behavior.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecise Bass Reproduction:\u003c\/strong\u003e When motor linearity is maintained throughout excursion, the subwoofer accurately reproduces the amplitude and phase characteristics of input signals. This precision is what separates \"loud bass\" from \"accurate bass\"—and Alpine's Gen2 DD-Linear motor delivers the latter.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe Gen2 DD-Linear designation indicates this is Alpine's \u003cstrong\u003esecond-generation\u003c\/strong\u003e implementation of dual-gap technology, incorporating refinements learned from the original DD-Linear motor design introduced in previous R-Series models. These second-generation improvements include optimized magnetic gap geometry for even flatter motor force curves, enhanced thermal management through improved flux distribution, and manufacturing process refinements that ensure consistent performance across production units.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eWhen combined with the RSW10D4's other engineering features (which we'll explore in detail), the Gen2 DD-Linear motor structure provides the foundation for this subwoofer's category-leading performance specifications. This isn't just a marketing feature—it's a \u003cstrong\u003efundamental architectural decision\u003c\/strong\u003e that defines how this subwoofer behaves throughout its operating range.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-tech-box\"\u003e\n\u003ch3\u003e💎 Neodymium Magnet System: Exotic Materials for Extraordinary Performance 💎\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eComplementing the Gen2 DD-Linear motor architecture is Alpine's choice of \u003cstrong\u003eneodymium magnet material\u003c\/strong\u003e—a rare-earth magnetic compound that represents one of the most significant material science advances in modern subwoofer design. This isn't a cosmetic upgrade or a minor specification enhancement; it's a \u003cstrong\u003etransformative material choice\u003c\/strong\u003e that enables capabilities impossible with conventional ferrite magnet structures.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eNeodymium (Nd-Fe-B)\u003c\/strong\u003e magnets deliver \u003cstrong\u003eapproximately 10-12 times\u003c\/strong\u003e the magnetic force per unit volume compared to traditional ferrite (ceramic) magnets used in most subwoofer designs. This extraordinary magnetic efficiency provides multiple engineering advantages that directly translate to audible performance improvements:\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eNeodymium Magnet Advantages:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact High-Force Motor:\u003c\/strong\u003e Neodymium enables Alpine to achieve strong magnetic motor force in a shallow mounting depth profile. A neodymium magnet delivering 600W RMS power handling capability occupies a fraction of the space required for an equivalent ferrite magnet structure—making true high-performance shallow-mount design physically possible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLightweight Construction:\u003c\/strong\u003e Neodymium magnets are significantly lighter than ferrite magnets delivering equivalent magnetic force. This weight reduction decreases moving mass resonances in the motor assembly and allows more precise motor geometry optimization without weight-driven compromises.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExtended Excursion Capability:\u003c\/strong\u003e The intense magnetic field generated by neodymium magnets provides the motor authority necessary to control the RSW10D4's exceptional 20mm linear excursion (Xmax)—an excursion specification that would be extremely difficult to achieve in a shallow-mount design using conventional ferrite magnets.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Thermal Stability:\u003c\/strong\u003e While neodymium magnets do have temperature-dependent characteristics, modern neodymium alloys used in premium audio applications maintain stable magnetic properties throughout the temperature ranges encountered in automotive environments. Combined with the RSW10D4's oversized voice coil and thermal management features (discussed below), the neodymium motor maintains consistent performance during extended operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Positioning:\u003c\/strong\u003e Neodymium magnets are expensive rare-earth materials typically reserved for flagship and premium product lines. Alpine's use of neodymium in the R-Series represents a commitment to performance-first engineering where material costs are justified by measurable performance advantages.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eTo put this in competitive perspective: many shallow-mount subwoofer designs use ferrite magnets as a cost-control measure, accepting the space and weight penalties as unavoidable. Premium alternatives like the JL Audio 10TW3-D4 achieve shallow mounting depth through proprietary architecture (Thin-Line technology eliminates the pole vent and compresses the motor structure) rather than exotic magnet materials. Alpine's decision to incorporate \u003cstrong\u003eboth\u003c\/strong\u003e advanced motor architecture (Gen2 DD-Linear) \u003cstrong\u003eand\u003c\/strong\u003e exotic magnet materials (neodymium) represents a comprehensive engineering approach where multiple technologies synergistically contribute to category-leading specifications.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe neodymium magnet system works in concert with the Gen2 DD-Linear motor architecture to deliver the intense, focused magnetic field necessary to control a 4-inch oversized voice coil through 20mm of linear excursion while maintaining the 3.25-inch shallow mounting depth profile. This is \u003cstrong\u003eexotic materials engineering\u003c\/strong\u003e deployed with clear performance objectives—not exotic materials for marketing purposes.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e📏 20mm Xmax: Category-Leading Linear Excursion 📏\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eBeyond the RSW10D4's power handling dominance lies another specification that redefines shallow-mount subwoofer capabilities: \u003cstrong\u003e20mm linear excursion (Xmax)\u003c\/strong\u003e. This specification represents the one-way distance the voice coil can travel while remaining within the optimized magnetic gap, maintaining linear motor force and low distortion characteristics.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eTo understand why 20mm Xmax is exceptional for a shallow-mount 10-inch subwoofer, consider typical specifications in this category. Most shallow-mount 10-inch designs feature Xmax values between \u003cstrong\u003e13-15mm\u003c\/strong\u003e—respectable excursion for space-constrained applications but fundamentally limited by the compressed motor structures necessary to achieve shallow mounting depths. The JL Audio 10TW3-D4, while not publishing specific Xmax values in readily available specifications, uses its patented Thin-Line architecture to maximize excursion within mounting depth constraints. The Kicker CompRT 10\" specifies approximately 13.35mm Xmax, representative of well-engineered mainstream shallow-mount designs.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe Alpine RSW10D4's \u003cstrong\u003e20mm Xmax\u003c\/strong\u003e represents approximately a \u003cstrong\u003e50% excursion advantage\u003c\/strong\u003e compared to typical 13mm shallow-mount specifications and a \u003cstrong\u003e33% advantage\u003c\/strong\u003e compared to 15mm designs. Since subwoofer output capability is directly proportional to the product of cone area and excursion (the volume of air the driver can displace), this excursion advantage translates to proportionally greater output potential—assuming the motor system can control the additional excursion (which the Gen2 DD-Linear neodymium motor definitively can).\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eWhat does 20mm Xmax enable in real-world applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003e20mm Xmax Performance Benefits:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigher Output Before Mechanical Limiting:\u003c\/strong\u003e Extended excursion allows the RSW10D4 to produce higher sound pressure levels before reaching mechanical excursion limits (Xmech). You can drive this subwoofer harder, louder, and longer without encountering the dynamic compression and distortion that occurs when a subwoofer approaches its mechanical limits.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Low-Frequency Extension:\u003c\/strong\u003e Greater excursion capability allows more efficient reproduction of deep bass frequencies where longer cone excursion is required to generate adequate sound pressure levels. The RSW10D4's 25-100 Hz frequency response benefits directly from this extended excursion capability, particularly in the critical 25-40 Hz region where many music genres and movie soundtracks contain fundamental bass content.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eImproved Dynamic Range:\u003c\/strong\u003e The difference between soft passages and peak transients (dynamic range) in modern music and movie soundtracks can exceed 20 dB. Extended excursion provides the headroom necessary to reproduce these dynamic peaks without compression, maintaining the emotional impact of dynamic bass events.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReduced Enclosure Volume Sensitivity:\u003c\/strong\u003e Subwoofers with greater excursion capability are less sensitive to enclosure volume variations. While the RSW10D4 will still perform optimally in properly sized enclosures (discussed in the Enclosure Design Guide section), the extended excursion provides more forgiving performance across a broader range of enclosure volumes compared to limited-excursion designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMatching Deep-Mount Capability:\u003c\/strong\u003e The RSW10D4's 20mm Xmax approaches or exceeds the excursion specifications of many standard-depth 10-inch subwoofer designs. You're getting deep-mount excursion capability in a shallow-mount package—a combination previously thought to require unacceptable engineering compromises.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe 20mm Xmax specification doesn't exist in isolation—it's enabled by the Gen2 DD-Linear motor's ability to maintain linear force throughout this extended excursion range, the neodymium magnet's intense magnetic field providing control authority across 20mm of travel, and the oversized 4-inch voice coil's mechanical stability during large-amplitude excursions. These technologies work synergistically to transform 20mm Xmax from a specification on paper into \u003cstrong\u003eusable, controlled, low-distortion excursion\u003c\/strong\u003e in real-world operation.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-tech-box\"\u003e\n\u003ch3\u003e🔧 Oversized 4-Inch Voice Coil: Thermal Management Excellence 🔧\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eSupporting the RSW10D4's 600W RMS power handling specification is an \u003cstrong\u003eoversized 4-inch (102mm) diameter voice coil\u003c\/strong\u003e—a component dimension that dramatically exceeds typical voice coil sizes in shallow-mount 10-inch subwoofer designs, which commonly employ 2.5-3 inch voice coils.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eVoice coil diameter decisions involve engineering tradeoffs. Larger voice coils provide greater surface area for heat dissipation, improved power handling, and stronger coupling to the cone structure—but they also increase moving mass, require larger (and potentially heavier\/deeper) motor structures, and introduce cost increases through material and manufacturing complexity. Most shallow-mount designs accept smaller voice coils as a compromise necessary to achieve compact mounting depths.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eAlpine's decision to incorporate a \u003cstrong\u003e4-inch oversized voice coil\u003c\/strong\u003e in a \u003cstrong\u003e3.25-inch mounting depth\u003c\/strong\u003e subwoofer represents sophisticated motor geometry optimization. This isn't simply stuffing a larger voice coil into an existing motor structure—it requires comprehensive redesign of the motor assembly geometry, magnetic gap dimensions, and thermal management pathways to accommodate the larger coil while maintaining the shallow mounting depth envelope.\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eOversized 4-Inch Voice Coil Advantages:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSuperior Heat Dissipation:\u003c\/strong\u003e Voice coil diameter directly determines the surface area available for heat transfer from the coil to surrounding motor structures (pole piece, top plate, magnet assembly). The RSW10D4's 4-inch coil provides approximately \u003cstrong\u003e60-80% more surface area\u003c\/strong\u003e compared to typical 2.5-3 inch coils, enabling more efficient heat dissipation during high-power operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Power Handling:\u003c\/strong\u003e Heat is the enemy of power handling. Voice coils fail when excessive heat degrades the adhesive bonding coil wire to the former, deforms the former itself, or causes the coil wire to exceed its current-carrying capacity. The 4-inch coil's superior thermal management directly enables the 600W RMS power handling specification by keeping coil temperatures within safe operating ranges even during sustained high-output operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLongevity and Reliability:\u003c\/strong\u003e A voice coil operating well below its thermal limits will outlive one constantly approaching temperature extremes by years or decades. The 4-inch coil's thermal management capability means the RSW10D4 operating at 400-500 watts experiences thermal stress levels similar to typical 2.5-inch coil designs operating at 250-300 watts—providing enormous reliability margins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConsistent Performance:\u003c\/strong\u003e Voice coil resistance increases with temperature due to the positive temperature coefficient of copper wire. As resistance increases, efficiency decreases (more power converts to heat rather than acoustic output). The 4-inch coil's ability to maintain lower operating temperatures means more consistent efficiency and performance during extended listening sessions compared to designs that experience significant thermal heating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStronger Cone Coupling:\u003c\/strong\u003e Larger voice coils bond to larger areas of the cone structure, distributing motor force across more cone material. This reduces stress concentrations, improves cone rigidity coupling to motor force, and enhances the accuracy with which motor movement translates to cone movement—ultimately improving transient response and bass precision.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe voice coil operates within the Gen2 DD-Linear dual-gap magnetic structure, maximizing the benefits of both technologies. The dual gaps provide optimized magnetic flux interaction throughout the 4-inch coil's height, while the 4-inch diameter provides the thermal capacity necessary to handle 600 watts RMS within the intense magnetic field generated by the neodymium magnet system. This is \u003cstrong\u003eintegrated engineering\u003c\/strong\u003e where component specifications are optimized holistically rather than in isolation.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe RSW10D4's voice coil is wound with high-purity copper wire on a lightweight aluminum voice coil former, balancing electrical conductivity, thermal transfer, and mechanical rigidity. The dual 4-ohm configuration (discussed in detail in the Wiring Flexibility section) provides installation flexibility while maintaining manageable impedance values for the 4-inch coil's inductance characteristics.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e🛡️ Premium Aluminum Components: Structural Excellence 🛡️\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eBeyond the motor assembly, Alpine incorporates \u003cstrong\u003epremium aluminum components\u003c\/strong\u003e throughout the RSW10D4's architecture—design decisions that contribute to both sonic performance and long-term reliability. These aren't cosmetic touches; they're functional material choices with measurable acoustic and mechanical benefits.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eAluminum Dust Cap:\u003c\/strong\u003e The RSW10D4 features an \u003cstrong\u003ealuminum dust cap\u003c\/strong\u003e mounted at the center of the cone assembly. While dust caps serve the practical purpose of preventing debris from entering the motor assembly's magnetic gap, they also function as acoustic radiators contributing to the subwoofer's high-frequency response extension and transient characteristics.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eAluminum dust caps provide several performance advantages over conventional paper or plastic dust caps. \u003cstrong\u003eRigidity\u003c\/strong\u003e is paramount—aluminum resists flexing and resonances that would introduce coloration to the sound. \u003cstrong\u003eLightweight\u003c\/strong\u003e characteristics ensure the dust cap adds minimal mass to the moving assembly, preserving transient response speed. \u003cstrong\u003eQuick sound transitions\u003c\/strong\u003e benefit from aluminum's high modulus of elasticity, which prevents the dust cap from storing and releasing energy (ringing) during rapid bass transients. The result is tighter, more articulate bass with improved attack characteristics—the difference between bass that sounds precise and controlled versus bass that sounds slow and boomy.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eDie-Cast Aluminum Frame:\u003c\/strong\u003e The RSW10D4 employs a \u003cstrong\u003edie-cast aluminum frame\u003c\/strong\u003e (basket) supporting the motor assembly, surround attachment, and overall driver structure. Frame material and geometry dramatically affect subwoofer performance through their influence on structural resonances and energy management.\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eDie-Cast Aluminum Frame Advantages:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eStructural Rigidity:\u003c\/strong\u003e Aluminum die-casting enables complex frame geometries with optimized rib structures and mounting points that maximize rigidity while minimizing weight. A rigid frame prevents flexing that would blur bass transients and reduce the accuracy with which motor force translates to acoustic output.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eResonance Reduction:\u003c\/strong\u003e Aluminum's material damping characteristics and the die-cast frame's mass distribution reduce resonant modes that could color the sound. Stamped steel frames (common in budget designs) and injection-molded plastic frames (common in entry-level products) typically exhibit more pronounced resonances compared to die-cast aluminum.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal Management:\u003c\/strong\u003e Aluminum's excellent thermal conductivity allows the frame to function as a heat sink, drawing thermal energy away from the motor assembly during operation. This contributes to the overall thermal management system (along with the oversized voice coil) that enables 600W RMS power handling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Manufacturing:\u003c\/strong\u003e Die-casting allows tight manufacturing tolerances ensuring consistent motor alignment, concentric voice coil positioning, and uniform surround attachment—all critical factors in achieving low distortion and consistent unit-to-unit performance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePremium Appearance:\u003c\/strong\u003e While not functionally critical, the die-cast aluminum frame's precision appearance reflects the engineering attention to detail throughout the RSW10D4's design. This is a product engineered without visible compromises.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe aluminum components complement the RSW10D4's \u003cstrong\u003epolypropylene cone\u003c\/strong\u003e and \u003cstrong\u003ebutyl rubber surround\u003c\/strong\u003e—materials selected for their balance of rigidity, internal damping, and environmental durability. Polypropylene cones resist moisture and temperature extremes common in automotive environments while providing the stiffness necessary for accurate bass reproduction. Butyl rubber surrounds offer exceptional longevity, maintaining flexibility and linearity through decades of excursion cycling and environmental exposure—unlike foam surrounds that deteriorate over time or rubber compounds that harden or crack with age.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eAlpine's material choices throughout the RSW10D4 reflect \u003cstrong\u003eautomotive-grade engineering standards\u003c\/strong\u003e inherited from the company's extensive OEM partnerships. Components are selected not just for optimal performance in laboratory conditions but for sustained performance through years of real-world automotive environments involving temperature cycling, humidity exposure, vibration, and extended operational duty cycles.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-tech-box\"\u003e\n\u003ch3\u003e🔌 Dual 4-Ohm Voice Coil Configuration: Installation Flexibility 🔌\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe Alpine RSW10D4 features a \u003cstrong\u003eDual 4-Ohm voice coil configuration\u003c\/strong\u003e, providing installation flexibility for various amplifier configurations and system designs. Understanding voice coil impedance options and their implications is essential for optimizing system performance and amplifier compatibility.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe RSW10D4 designation indicates \u003cstrong\u003eDual 4-Ohm\u003c\/strong\u003e coils—two separate 4-ohm voice coils wound on the same former within the same motor structure. These coils can be wired in two configurations:\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eRSW10D4 Wiring Options:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eParallel Wiring (2-Ohm Final Impedance):\u003c\/strong\u003e Connect positive terminals together, negative terminals together, and wire to amplifier. This configuration presents a 2-ohm load to your amplifier, maximizing power output from amplifiers that are stable at 2 ohms. Most modern class-D amplifiers deliver maximum power into 2-ohm loads, making parallel wiring the preferred configuration for single-subwoofer installations where maximum output is desired.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries Wiring (8-Ohm Final Impedance):\u003c\/strong\u003e Connect positive terminal of coil #1 to negative terminal of coil #2, then connect the remaining positive and negative terminals to your amplifier. This configuration presents an 8-ohm load, suitable for vintage amplifiers that are not stable at low impedances or for installations where higher impedance is preferable for multiple subwoofer wiring configurations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eImportant Note:\u003c\/strong\u003e The RSW10D4 is the \u003cstrong\u003eDual 4-Ohm variant\u003c\/strong\u003e. Alpine also manufactures the \u003cstrong\u003eRSW10D2 (Dual 2-Ohm)\u003c\/strong\u003e variant of this same subwoofer, which offers different final impedance options (1-ohm parallel, 4-ohm series). Audio Intensity stocks the \u003cstrong\u003eRSW10D4 (Dual 4-Ohm)\u003c\/strong\u003e configuration, providing 2-ohm and 8-ohm installation flexibility. When selecting subwoofers, ensure your amplifier is stable at the final system impedance you'll be presenting—2 ohms for most modern installations using the RSW10D4 in parallel wiring.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eFor single-subwoofer installations (the most common shallow-mount application), \u003cstrong\u003eparallel wiring to 2 ohms\u003c\/strong\u003e is typically optimal, allowing modern 2-ohm-stable amplifiers to deliver maximum power to the RSW10D4's 600W RMS power handling capability. For multiple-subwoofer installations or amplifiers with different impedance stability characteristics, consult the Amplifier Matching section below for detailed system design guidance.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e📊 Complete Technical Specifications 📊\u003c\/h2\u003e\n\u003ctable class=\"alpine-spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlpine R-Series RSW10D4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSubwoofer Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e10 Inches (254mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eType\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eShallow-Mount Subwoofer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoice Coil Configuration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual 4-Ohm (D4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Handling (RMS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e600 Watts RMS (Continuous)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Handling (Peak)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1800 Watts Peak\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.25 Inches (82.55mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLinear Excursion (Xmax)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e20mm (One-Way)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoice Coil Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4 Inches (102mm) - Oversized\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrequency Response\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e25-100 Hz (Primary) \/ 29-200 Hz (Extended)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSensitivity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e78 dB @ 1W\/1m (Conservative) \/ 83 dB (Some Sources)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNeodymium (Rare-Earth Exotic Material)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGen2 DD-Linear Magnetic Circuit (Dual-Gap)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCone Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolypropylene\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDust Cap Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAluminum (Rigid, Lightweight)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSurround Material\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eButyl Rubber (Long-Life)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrame Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDie-Cast Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWiring Options\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2-Ohm (Parallel) \/ 8-Ohm (Series)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAlternative Model\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRSW10D2 (Dual 2-Ohm) Available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOptional Accessory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eKTE-RS10G Subwoofer Grille Kit (Steel Mesh, Sold Separately)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNEW (Current Production)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlpine Electronics, Inc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParent Company\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAlps Alpine Co., Ltd. (6770:JP)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Engineering\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eJapan (Iwaki, Fukushima Prefecture)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeritage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57 Years (Founded 1967)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eManufacturer Warranty (Contact Audio Intensity for Details)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cdiv class=\"alpine-warning\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.3em;\"\u003e\u003cstrong\u003e⚠️ SPECIFICATION NOTES:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp style=\"margin-bottom: 0; font-size: 1.1em; line-height: 1.8;\"\u003e\u003cstrong\u003eFrequency Response and Sensitivity Variations:\u003c\/strong\u003e Published specifications for the RSW10D4's frequency response and sensitivity vary slightly between sources. Alpine's manufacturer documentation and Audio Intensity's testing indicate \u003cstrong\u003e25-100 Hz frequency response\u003c\/strong\u003e and \u003cstrong\u003e78 dB sensitivity\u003c\/strong\u003e as primary specifications, with some technical sources citing extended frequency response (29-200 Hz) and higher sensitivity (83 dB). These variations likely reflect different measurement conditions (anechoic vs. in-room, nearfield vs. farfield, enclosure volume variations). For installation planning purposes, use the more conservative specifications (25-100 Hz, 78 dB) to ensure adequate amplifier power and realistic performance expectations. The RSW10D4 will meet or exceed these conservative specifications in properly designed installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e📐 Enclosure Design Guide 📐\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eOptimizing enclosure design for the Alpine RSW10D4 requires understanding how shallow-mount subwoofers interact with enclosure volumes and how the RSW10D4's unique specifications (20mm Xmax, Gen2 DD-Linear motor, 600W RMS power handling) influence enclosure recommendations.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eImportant Disclosure:\u003c\/strong\u003e Complete Thiele-Small parameters and Alpine's specific enclosure volume recommendations for the RSW10D4 were not available through standard technical documentation channels at the time of this product description's development. The following guidance is based on extensive experience with shallow-mount 10-inch subwoofer designs, analysis of similar Alpine R-Series models, and fundamental acoustic principles governing subwoofer-enclosure interactions. For installation-critical applications, contact \u003cstrong\u003eAudio Intensity's technical support team\u003c\/strong\u003e for the most current Alpine enclosure specifications or consultation on custom enclosure designs.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eSealed Enclosure Design (Recommended for Most Applications):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eSealed enclosures provide the most predictable, controlled bass response with excellent transient accuracy and maximum power handling safety margins. For shallow-mount 10-inch subwoofers with the RSW10D4's specifications, typical optimal sealed enclosure volumes range from \u003cstrong\u003e0.50 to 1.00 cubic feet\u003c\/strong\u003e (14 to 28 liters) of net internal volume (after subwoofer displacement and bracing\/damping material volume subtraction).\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eSealed Enclosure Volume Effects:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmaller Sealed Volumes (0.50-0.65 cu.ft.):\u003c\/strong\u003e Tighter, more controlled bass with slightly reduced deep bass extension. Higher system Q results in faster transient response and reduced excursion requirements, maximizing power handling and minimizing distortion. Ideal for installations prioritizing accuracy, tight bass response, and maximum output in extremely space-constrained applications. Recommended for musical genres emphasizing bass precision (rock, pop, electronic music with rapid bass transients).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedium Sealed Volumes (0.65-0.85 cu.ft.):\u003c\/strong\u003e Balanced compromise between deep bass extension and transient accuracy. This range likely represents Alpine's optimal target specification (if specified), providing flat frequency response extension into the 25-30 Hz region with controlled transient characteristics. Suitable for most musical genres and general-purpose installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarger Sealed Volumes (0.85-1.00 cu.ft.):\u003c\/strong\u003e Maximum deep bass extension with slightly relaxed transient response. Lower system Q extends frequency response deeper but increases excursion requirements at low frequencies, requiring careful amplifier power management to avoid over-excursion. Best for applications prioritizing maximum low-frequency extension (home theater, hip-hop, electronic music with deep synthesized bass content).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003ePorted (Vented) Enclosure Design (Advanced Installations):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003ePorted enclosures can provide higher output at the port tuning frequency and extended low-frequency response compared to sealed designs of equivalent size—but they require more precise construction, introduce group delay (transient blurring), and reduce power handling safety margins below the tuning frequency. Without Alpine's specific ported enclosure recommendations (volume and tuning frequency), ported design for the RSW10D4 should be considered \u003cstrong\u003eadvanced custom territory\u003c\/strong\u003e best left to experienced enclosure designers or professional installers.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eIf pursuing ported design, typical shallow-mount 10-inch subwoofer ported recommendations range from \u003cstrong\u003e1.00 to 1.50 cubic feet\u003c\/strong\u003e net volume with tuning frequencies between \u003cstrong\u003e30-38 Hz\u003c\/strong\u003e depending on application priorities (lower tuning for maximum extension, higher tuning for maximum output). The RSW10D4's 20mm Xmax provides good safety margins for ported designs, but careful attention to subsonic filtering (high-pass filtering below tuning frequency) is essential to prevent over-excursion damage.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eEnclosure Construction Guidelines:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eProfessional Enclosure Building Standards:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial Selection:\u003c\/strong\u003e Use minimum 3\/4-inch (19mm) thick MDF (medium-density fiberboard) or Baltic birch plywood for all enclosure panels. MDF provides superior acoustic damping compared to conventional plywood; Baltic birch offers superior structural strength if weight is a concern. Avoid particleboard (insufficient strength) and conventional pine plywood (excessive resonances).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eJoinery and Sealing:\u003c\/strong\u003e Apply high-quality wood glue to all joints and reinforce with screws on 4-6 inch spacing. Seal all internal seams with silicone caulk after assembly to ensure complete airtightness—even small air leaks dramatically degrade sealed enclosure performance and eliminate ported enclosure tuning accuracy.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInternal Bracing:\u003c\/strong\u003e For enclosures exceeding 0.75 cubic feet, install internal bracing (additional MDF strips connecting opposing panels) to reduce panel resonances. Large flat panels act as drum heads, absorbing bass energy and reducing output while adding coloration. Bracing stiffens panels, improving efficiency and reducing distortion.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDamping Material:\u003c\/strong\u003e Line 50-75% of enclosure internal surface area with acoustic damping material (polyester fiberfill, acoustic foam, or dedicated enclosure damping products). Avoid completely filling the enclosure—excessive damping reduces efficiency. Proper damping absorbs standing waves inside the enclosure and smooths frequency response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Panel:\u003c\/strong\u003e Install a recessed terminal cup with spring-loaded or binding post terminals for secure amplifier connections. Avoid relying solely on wire pass-through holes, which can introduce air leaks and wire chafing issues over time.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubwoofer Mounting:\u003c\/strong\u003e Mount the RSW10D4 using the provided mounting holes with appropriate length machine screws (avoid wood screws that can strip over time). Use rubber gasket material between subwoofer frame and enclosure baffle to ensure airtight seal and reduce vibration transmission.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eShallow-Mount Installation Applications:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe RSW10D4's 3.25-inch mounting depth opens installation possibilities impossible with conventional deep-mount subwoofers:\u003c\/p\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnder-Seat Enclosures:\u003c\/strong\u003e Fits beneath front or rear seats in trucks, SUVs, and sedans where conventional subwoofers won't fit. Maintains passenger and cargo space while adding substantial bass reinforcement. Typical under-seat enclosures range from 0.50-0.75 cubic feet—well within the RSW10D4's optimal sealed range.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBehind-Seat Enclosures:\u003c\/strong\u003e Ideal for extended-cab trucks and crew-cab pickups where behind-seat mounting provides discrete installation without consuming valuable cargo bed or passenger space. Can accommodate larger enclosure volumes (0.75-1.00+ cubic feet) for extended bass response.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCustom Shallow Enclosures:\u003c\/strong\u003e Build custom enclosures integrating into vehicle-specific locations—spare tire wells (in some vehicles), under-trunk-floor installations, side-panel enclosures, and other creative mounting locations where depth restrictions eliminate deep-mount alternatives.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFactory Subwoofer Replacements:\u003c\/strong\u003e Many vehicles with factory premium audio systems include shallow-mount subwoofers in under-seat or trunk locations. The RSW10D4 can replace anemic factory subwoofers (typically 50-100 watts RMS) with a true high-performance alternative delivering 6-12x the power handling and dramatically superior output capability—often in the same mounting location using the same enclosure volume.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eFor professional enclosure design assistance, custom enclosure fabrication, or installation consultation specific to your vehicle and application, contact \u003cstrong\u003eAudio Intensity\u003c\/strong\u003e. Our technical team can provide Alpine's latest enclosure recommendations, design custom enclosures optimized for your installation constraints, and recommend qualified installation professionals in your area for complex installations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-tech-box\"\u003e\n\u003ch3\u003e🔊 Amplifier Matching and System Design 🔊\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eMaximizing the Alpine RSW10D4's category-leading performance requires appropriate amplifier selection matched to the subwoofer's 600W RMS power handling and 2-ohm or 8-ohm impedance options (when Dual 4-Ohm coils are wired in parallel or series configuration).\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eRecommended Amplifier Power (Single RSW10D4 Installation):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eAmplifier Power Matching Guidelines:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eConservative Matching (400-500W RMS @ 2Ω):\u003c\/strong\u003e Suitable for installations prioritizing longevity and maximum safety margins. Provides excellent output capability while operating the RSW10D4 within comfortable thermal and excursion ranges. Recommended for daily-driver vehicles, installations by less-experienced enthusiasts, or applications where reliability is paramount.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimal Matching (500-600W RMS @ 2Ω):\u003c\/strong\u003e Fully exploits the RSW10D4's 600W RMS power handling capability while maintaining appropriate headroom. Ideal for enthusiast installations seeking maximum performance from this subwoofer. Ensure amplifier is from a reputable manufacturer with honest power ratings (Alpine, Arc Audio, JL Audio, Zapco, etc.)—avoid amplifiers from unknown brands claiming unrealistic power specifications.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAggressive Matching (600-750W RMS @ 2Ω):\u003c\/strong\u003e Provides additional headroom for dynamic peaks and compensates for potential amplifier power rating optimism. Suitable only for installations with proper electrical system upgrades (high-output alternator, supplemental battery capacity, upgraded wiring) and active monitoring to prevent over-excursion or thermal overload. Recommended only for experienced installers who understand the implications of overpowering subwoofers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eAmplifier Feature Recommendations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-Ohm Stability:\u003c\/strong\u003e Essential for single RSW10D4 installations using parallel wiring (most common configuration). Verify amplifier specifications explicitly state 2-ohm stability—not all amplifiers are stable at 2 ohms, and unstable operation can damage amplifiers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSubsonic Filter (Infrasonic Filter):\u003c\/strong\u003e Highly recommended, especially for ported enclosures. Subsonic filters (typically 15-25 Hz high-pass) prevent the amplifier from wasting power reproducing frequencies below the subwoofer's usable range and protect the RSW10D4 from over-excursion damage below enclosure tuning frequency (ported designs) or system resonance (sealed designs).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVariable Low-Pass Filter:\u003c\/strong\u003e Essential for integrating subwoofer output with full-range speakers. Adjustable low-pass crossover (typically 50-120 Hz range) allows precise blending of subwoofer output with your main speakers' low-frequency rolloff.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBass Boost EQ:\u003c\/strong\u003e Optional but useful for compensating for specific enclosure characteristics or personal preference. Use conservatively—excessive bass boost increases distortion and reduces power handling safety margins.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Level Control:\u003c\/strong\u003e Convenient for adjusting subwoofer output level from the driver's seat without accessing amplifier gain controls. Useful for compensating for different musical genres or listening preferences without permanent gain structure changes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003e\u003cstrong\u003eElectrical System Considerations:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eA 600-watt RMS subwoofer amplifier operating at realistic efficiency levels (60-80% for class-AB, 75-90% for class-D) will draw approximately \u003cstrong\u003e50-75 amperes\u003c\/strong\u003e from your vehicle's electrical system during peak output. Ensure your installation includes:\u003c\/p\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdequate Power Wire Gauge:\u003c\/strong\u003e Minimum 4-gauge (AWG) power wire for amplifiers up to 600W RMS with runs up to 15 feet; 2-gauge for runs exceeding 15 feet or for future expansion capability. Undersized power wire introduces voltage drop, reducing amplifier output and potentially causing thermal protection triggering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProper Fusing:\u003c\/strong\u003e Install appropriate fuse rating (typically 60-80A for 500-600W amplifiers) within 18 inches of battery connection. Fuse protects wiring in case of short circuit—use only quality AGU, ANL, or MIDI fuses, never ordinary glass fuses.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolid Grounding:\u003c\/strong\u003e Ground wire should match power wire gauge and connect to chassis metal with paint\/corrosion removed for maximum conductivity. Poor grounding is the single most common cause of amplifier instability, noise, and protection mode triggering.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical System Upgrades (High-Output Installations):\u003c\/strong\u003e For installations approaching or exceeding 600W RMS, consider supplemental battery capacity (second battery or larger primary battery), high-output alternator upgrades (130A+ for vehicles with stock 90-110A alternators), and battery voltage monitoring to prevent excessive voltage drop during high-output operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eFor complete system design assistance including amplifier recommendations, wiring specifications, electrical system upgrade consultation, and professional installation referrals, contact \u003cstrong\u003eAudio Intensity's technical support team\u003c\/strong\u003e. We can recommend amplifiers optimally matched to the RSW10D4's specifications and your specific installation requirements.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e⚖️ Competitive Analysis: Mid-Premium Market Positioning ⚖️\u003c\/h2\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eUnderstanding where the Alpine RSW10D4 fits in the shallow-mount 10-inch subwoofer market requires examining the competitive landscape established by recently documented alternatives—specifically the \u003cstrong\u003eJL Audio 10TW3-D4\u003c\/strong\u003e (premium benchmark) and \u003cstrong\u003eKicker CompRT 10\"\u003c\/strong\u003e (value benchmark) that define the upper and lower boundaries of this product category.\u003c\/p\u003e\n\u003ctable class=\"alpine-comparison-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eAlpine RSW10D4\u003c\/th\u003e\n\u003cth\u003eJL Audio 10TW3-D4\u003c\/th\u003e\n\u003cth\u003eKicker CompRT 10\"\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePower Handling (RMS)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"alpine-winner\"\u003e600W 🏆\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003ctd\u003e400W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting Depth\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e3.25\"\u003c\/td\u003e\n\u003ctd\u003e3.25\"\u003c\/td\u003e\n\u003ctd\u003e3-7\/16\" (slightly deeper)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eLinear Excursion (Xmax)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"alpine-winner\"\u003e20mm 🏆\u003c\/td\u003e\n\u003ctd\u003eNot Published (Proprietary)\u003c\/td\u003e\n\u003ctd\u003e~13.35mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoice Coil Diameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"alpine-winner\"\u003e4\" Oversized 🏆\u003c\/td\u003e\n\u003ctd\u003eNot Published\u003c\/td\u003e\n\u003ctd\u003e~2.5-3\" (Typical)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMagnet Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd class=\"alpine-winner\"\u003eNeodymium 💎\u003c\/td\u003e\n\u003ctd\u003eProprietary (Not Specified)\u003c\/td\u003e\n\u003ctd\u003eFerrite (Standard)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMotor Design\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGen2 DD-Linear (Dual-Gap)\u003c\/td\u003e\n\u003ctd\u003eThin-Line (No Pole Vent)\u003c\/td\u003e\n\u003ctd\u003eSoloKon Technology\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eHeritage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e57 Years (1967 Japan)\u003c\/td\u003e\n\u003ctd\u003e50 Years (1973 USA)\u003c\/td\u003e\n\u003ctd\u003e50 Years (1973 USA)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePrice Positioning\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMid-Premium (TBD)\u003c\/td\u003e\n\u003ctd\u003ePremium ($519 MSRP)\u003c\/td\u003e\n\u003ctd\u003eValue ($199.99)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eKey Technology\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eGen2 DD-Linear + Neodymium\u003c\/td\u003e\n\u003ctd\u003ePatented Thin-Line + DMA\u003c\/td\u003e\n\u003ctd\u003eSoloKon + Forced-Air Cooling\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eVoice Coil Config\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDual 4Ω (D4)\u003c\/td\u003e\n\u003ctd\u003eDual 4Ω (D4)\u003c\/td\u003e\n\u003ctd\u003eDual 4Ω (D4)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9; margin-top: 30px;\"\u003e\u003cstrong\u003eCompetitive Analysis Interpretation:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe comparison table reveals the Alpine RSW10D4's strategic positioning: \u003cstrong\u003esuperior specifications compared to both premium and value benchmarks\u003c\/strong\u003e at an expected mid-premium price point between the two extremes.\u003c\/p\u003e\n\u003cdiv class=\"alpine-highlight\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.4em; color: #ffffff;\"\u003eAlpine RSW10D4 Competitive Advantages:\u003c\/h4\u003e\n\u003cul style=\"font-size: 1.1em; line-height: 1.9;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. JL Audio 10TW3-D4 ($519 Premium):\u003c\/strong\u003e The Alpine delivers 50% more power handling (600W vs. 400W RMS), documented category-leading 20mm Xmax excursion, oversized 4\" voice coil thermal management, and exotic neodymium magnet materials—specifications that meet or exceed the JL Audio premium benchmark at an expected significantly lower price. The JL Audio offers patented Thin-Line technology and legendary brand reputation; the Alpine counters with measurably superior specifications and Japanese precision engineering heritage. \u003cstrong\u003eValue Proposition:\u003c\/strong\u003e Superior specifications at mid-premium pricing vs. premium pricing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003evs. Kicker CompRT 10\" ($199.99 Value):\u003c\/strong\u003e The Alpine delivers 50% more power handling (600W vs. 400W RMS), 50% greater excursion (20mm vs. 13.35mm), exotic neodymium magnet vs. standard ferrite, dual-gap Gen2 DD-Linear motor vs. conventional single-gap design, and oversized 4\" voice coil vs. typical 2.5-3\" coils. The Kicker offers wider enclosure flexibility (0.4-1.25 cu.ft. sealed range) and all-weather construction; the Alpine counters with dramatically superior power handling and materials engineering. \u003cstrong\u003ePerformance Proposition:\u003c\/strong\u003e Category-leading specifications justifying mid-premium pricing vs. value pricing.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThe Alpine RSW10D4 occupies a unique market position: \u003cstrong\u003eyou're not paying JL Audio premium pricing ($519), yet you're receiving specifications that exceed the JL Audio benchmark\u003c\/strong\u003e. Simultaneously, you're paying more than Kicker value pricing ($199.99), but you're receiving 50% more power handling, 50% more excursion, and exotic materials engineering that fundamentally separates the RSW10D4 from mainstream alternatives.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eThis positioning reflects Alpine's core philosophy: \u003cstrong\u003eadvanced engineering at accessible pricing\u003c\/strong\u003e. The RSW10D4 proves you don't need to choose between flagship performance and reasonable pricing—Alpine's 57-year engineering expertise, OEM manufacturing efficiency, and Alps Alpine component-level optimization enable the company to deliver superior specifications without requiring premium pricing barriers.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.15em; line-height: 1.9;\"\u003eFor enthusiasts evaluating shallow-mount 10-inch subwoofer options, the decision framework becomes clear: If brand prestige and legendary reputation justify premium pricing, the JL Audio 10TW3-D4 delivers exactly that. If maximum value and all-weather versatility are priorities, the Kicker CompRT 10\" provides exceptional mainstream performance. But if you want \u003cstrong\u003ethe highest power handling, greatest excursion capability, most advanced motor design, and exotic materials engineering\u003c\/strong\u003e available in this category—specifications that objectively exceed both premium and value alternatives—the Alpine RSW10D4 represents the optimal performance-to-value proposition in the shallow-mount 10-inch market.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-container\"\u003e\n\u003ch2 class=\"alpine-subheader\"\u003e❓ Frequently Asked Questions ❓\u003c\/h2\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: What's the difference between the RSW10D4 and RSW10D2 models?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003eThe difference is \u003cstrong\u003evoice coil impedance configuration\u003c\/strong\u003e. The \u003cstrong\u003eRSW10D4\u003c\/strong\u003e (this model, stocked by Audio Intensity) features \u003cstrong\u003eDual 4-Ohm voice coils\u003c\/strong\u003e, providing 2-ohm (parallel) or 8-ohm (series) final impedance options. The \u003cstrong\u003eRSW10D2\u003c\/strong\u003e features \u003cstrong\u003eDual 2-Ohm voice coils\u003c\/strong\u003e, providing 1-ohm (parallel) or 4-ohm (series) final impedance options. All other specifications (power handling, excursion, motor design, materials) are identical. Choose based on your amplifier's impedance stability: RSW10D4 for 2-ohm-stable amplifiers (most common), RSW10D2 for 1-ohm-stable amplifiers or 4-ohm multi-subwoofer configurations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: Why does the RSW10D4 handle 600W RMS when competing shallow-mount designs are rated for 400W?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003eThe 600W RMS power handling advantage results from \u003cstrong\u003ecomprehensive engineering\u003c\/strong\u003e rather than a single feature: (1) \u003cstrong\u003eOversized 4-inch voice coil\u003c\/strong\u003e provides 60-80% more heat dissipation surface area compared to typical 2.5-3 inch coils; (2) \u003cstrong\u003eNeodymium magnet system\u003c\/strong\u003e generates intense magnetic field in compact space, enabling larger voice coil in shallow mounting depth; (3) \u003cstrong\u003eGen2 DD-Linear dual-gap motor\u003c\/strong\u003e distributes thermal energy across two magnetic gaps rather than concentrating heat in single gap; (4) \u003cstrong\u003eDie-cast aluminum frame\u003c\/strong\u003e functions as heat sink drawing thermal energy away from motor assembly. These technologies synergistically enable 600W continuous power handling while maintaining 3.25-inch shallow mounting depth—a combination representing Alpine's 57 years of engineering expertise.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: What does Gen2 DD-Linear technology actually do for sound quality?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003e\u003cstrong\u003eGen2 DD-Linear (Dual-Gap Linear) technology\u003c\/strong\u003e maintains linear motor force throughout the voice coil's excursion range by providing two optimized magnetic gaps instead of one. In conventional single-gap motors, portions of the voice coil move outside the magnetic gap during excursion, causing nonlinear distortion and reduced control. The dual-gap architecture keeps the voice coil within optimized magnetic flux throughout its 20mm excursion range, providing: \u003cstrong\u003e(1)\u003c\/strong\u003e Lower harmonic and intermodulation distortion; \u003cstrong\u003e(2)\u003c\/strong\u003e More precise bass reproduction with accurate amplitude and phase response; \u003cstrong\u003e(3)\u003c\/strong\u003e Better transient response—tight, controlled bass without overshoot or ringing; \u003cstrong\u003e(4)\u003c\/strong\u003e Enhanced motor control preventing over-excursion and mechanical instability. The audible result is bass that sounds precise, articulate, and effortless rather than boomy, loose, or compressed.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: Will this subwoofer fit in my vehicle's factory subwoofer location?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003e\u003cstrong\u003ePossibly, but verification is essential.\u003c\/strong\u003e The RSW10D4's \u003cstrong\u003e3.25-inch mounting depth\u003c\/strong\u003e is shallower than most factory subwoofer locations, but you must also verify: (1) \u003cstrong\u003eCutout diameter\u003c\/strong\u003e—most 10-inch subwoofers require 9-inch cutout diameter; measure your factory opening; (2) \u003cstrong\u003eOverall frame diameter\u003c\/strong\u003e—the RSW10D4 requires sufficient clearance around the mounting flange; (3) \u003cstrong\u003eEnclosure volume\u003c\/strong\u003e—factory subwoofer enclosures often range from 0.50-0.75 cubic feet, generally suitable for the RSW10D4, but smaller volumes may compromise low-frequency extension; (4) \u003cstrong\u003eImpedance compatibility\u003c\/strong\u003e—factory amplifiers may expect specific impedance loads (typically 4 ohms); the RSW10D4's Dual 4-Ohm configuration provides 2-ohm or 8-ohm options, not 4-ohm single-impedance. For factory replacement applications, consult Audio Intensity's technical team with your vehicle's year\/make\/model for compatibility verification and potential amplifier upgrade recommendations.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: How does neodymium magnet compare to ferrite magnets in other subwoofers?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003e\u003cstrong\u003eNeodymium (Nd-Fe-B) rare-earth magnets\u003c\/strong\u003e deliver approximately \u003cstrong\u003e10-12 times the magnetic force per unit volume\u003c\/strong\u003e compared to conventional ferrite (ceramic) magnets. Advantages: \u003cstrong\u003e(1)\u003c\/strong\u003e Compact high-force motor—neodymium enables strong magnetic field in shallow mounting depth without massive, heavy magnet structures; \u003cstrong\u003e(2)\u003c\/strong\u003e Lightweight construction—reduced motor weight decreases structural resonances; \u003cstrong\u003e(3)\u003c\/strong\u003e Extended excursion control—intense magnetic field provides authority to control 20mm excursion; \u003cstrong\u003e(4)\u003c\/strong\u003e Premium positioning—neodymium is expensive exotic material reserved for high-performance applications. Disadvantages: \u003cstrong\u003e(1)\u003c\/strong\u003e Cost—neodymium magnets are significantly more expensive than ferrite; \u003cstrong\u003e(2)\u003c\/strong\u003e Temperature sensitivity—neodymium has more pronounced temperature-dependent magnetic properties, addressed in modern designs with temperature-stable alloys and thermal management. For shallow-mount subwoofer applications where space constraints are paramount, neodymium's compact high-force characteristics provide engineering advantages impossible to achieve with ferrite magnets.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: Should I build a sealed or ported enclosure for the RSW10D4?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003e\u003cstrong\u003eSealed enclosures are recommended for most installations\u003c\/strong\u003e due to their predictable response, excellent transient accuracy, maximum power handling safety margins, and compact size advantages (critical for shallow-mount applications). Recommended sealed volumes: \u003cstrong\u003e0.50-1.00 cubic feet\u003c\/strong\u003e net internal volume (after subwoofer and bracing displacement). \u003cstrong\u003eSmaller volumes (0.50-0.65 cu.ft.)\u003c\/strong\u003e provide tighter bass and maximum power handling; \u003cstrong\u003elarger volumes (0.85-1.00 cu.ft.)\u003c\/strong\u003e provide extended deep bass response. \u003cstrong\u003ePorted enclosures\u003c\/strong\u003e can provide higher output at tuning frequency and extended low-frequency response but require more space (typically 1.00-1.50 cu.ft.), precise construction, and subsonic filtering to prevent over-excursion below tuning frequency. Without Alpine's specific ported recommendations, ported design should be considered advanced territory requiring professional consultation. For most shallow-mount applications prioritizing space efficiency and reliable performance, sealed enclosures in the 0.65-0.85 cu.ft. range provide optimal results.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: What amplifier power do I need to properly drive the RSW10D4?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003eRecommended amplifier power (with RSW10D4 wired to 2-ohm load in parallel configuration): \u003cstrong\u003e(1) Conservative matching:\u003c\/strong\u003e 400-500W RMS @ 2 ohms—excellent output with maximum safety margins, ideal for reliability-focused installations; \u003cstrong\u003e(2) Optimal matching:\u003c\/strong\u003e 500-600W RMS @ 2 ohms—fully exploits the RSW10D4's power handling capability, recommended for enthusiast installations; \u003cstrong\u003e(3) Aggressive matching:\u003c\/strong\u003e 600-750W RMS @ 2 ohms—provides dynamic headroom, requires electrical system upgrades and careful monitoring, recommended only for experienced installers. Ensure amplifier is from reputable manufacturer with honest power ratings (Alpine, Arc Audio, JL Audio, Rockford Fosgate, Zapco, etc.). Amplifier must be explicitly rated 2-ohm stable. Recommended features: subsonic filter, variable low-pass crossover, bass boost EQ (optional), remote level control (optional). For specific amplifier recommendations matched to your installation requirements and budget, contact Audio Intensity's technical support.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: Is the Alpine RSW10D4 better than the JL Audio 10TW3-D4 that costs $519?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003e\"Better\" depends on evaluation criteria. \u003cstrong\u003eMeasurable specifications:\u003c\/strong\u003e The Alpine RSW10D4 objectively delivers 50% more power handling (600W vs. 400W RMS), documented 20mm Xmax excursion advantage, oversized 4-inch voice coil, and exotic neodymium magnet materials—specifications that meet or exceed the JL Audio premium benchmark. \u003cstrong\u003eBrand reputation:\u003c\/strong\u003e JL Audio's 50-year legacy, legendary sound quality reputation, and patented Thin-Line technology command premium pricing and strong brand loyalty. \u003cstrong\u003eValue proposition:\u003c\/strong\u003e The Alpine delivers superior specifications at expected mid-premium pricing (significantly less than JL Audio's $519 MSRP), representing better performance-per-dollar value. \u003cstrong\u003eConclusion:\u003c\/strong\u003e If brand prestige and legendary reputation justify premium pricing, choose JL Audio. If you prioritize measurable performance specifications and performance-to-value ratio, choose Alpine. Both are excellent subwoofers from manufacturers with multi-decade engineering expertise—the choice depends on whether you value brand heritage or specification superiority.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-faq-item\"\u003e\n\u003ch4\u003eQ: What makes Alpine different from other car audio manufacturers?\u003c\/h4\u003e\n\u003cp style=\"font-size: 1.05em; line-height: 1.8;\"\u003eAlpine Electronics occupies a unique position: \u003cstrong\u003eOEM-quality engineering at mass-market accessible pricing\u003c\/strong\u003e. As a subsidiary of \u003cstrong\u003eAlps Alpine Co., Ltd.\u003c\/strong\u003e—one of the world's premier precision electronic component manufacturers—Alpine inherits component-level expertise and manufacturing efficiency that few audio-only brands can match. Alpine maintains \u003cstrong\u003eOEM partnerships with major automotive manufacturers\u003c\/strong\u003e, engineering factory audio systems to OEM durability and performance standards. This expertise translates to aftermarket products that combine \u003cstrong\u003eadvanced engineering, honest specifications, and competitive pricing\u003c\/strong\u003e—proving you don't need flagship pricing to achieve flagship performance. Alpine's 57-year Japanese precision engineering heritage (founded 1967), Alps Alpine component optimization, and democratic approach to performance accessibility distinguish the brand in a marketplace often forcing enthusiasts to choose between affordability (sacrificing performance) or performance (sacrificing affordability). Alpine proves this compromise is unnecessary.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-cta\"\u003e\n\u003ch3\u003e🎯 Experience Category-Leading Shallow-Mount Performance 🎯\u003c\/h3\u003e\n\u003cp style=\"font-size: 1.3em; line-height: 1.8; margin: 25px 0;\"\u003eThe Alpine R-Series RSW10D4 10\" Shallow-Mount Subwoofer represents the pinnacle of shallow-mount engineering: \u003cstrong\u003e600W RMS power handling, 20mm Xmax linear excursion, Gen2 DD-Linear dual-gap motor, neodymium magnet system, oversized 4-inch voice coil, premium aluminum construction\u003c\/strong\u003e—all in a 3.25-inch mounting depth profile that fits where conventional subwoofers cannot.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.3em; line-height: 1.8; margin: 25px 0;\"\u003eThis is \u003cstrong\u003eNEW current production\u003c\/strong\u003e from Alpine Electronics—manufacturer-backed warranty, current product support, and the latest engineering refinements from 57 years of Japanese precision audio development. Whether you're replacing an anemic factory subwoofer, building a custom under-seat installation, or maximizing bass output in space-constrained applications, the RSW10D4 delivers performance specifications that redefine what \"shallow-mount\" can achieve.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.4em; line-height: 1.8; margin: 25px 0; font-weight: bold;\"\u003eAudio Intensity stocks the \u003cstrong\u003eRSW10D4 (Dual 4-Ohm)\u003c\/strong\u003e configuration for immediate delivery. Contact our technical team for amplifier recommendations, enclosure design consultation, professional installation referrals, or any questions about integrating this category-leading subwoofer into your vehicle's audio system.\u003c\/p\u003e\n\u003cp style=\"font-size: 1.5em; margin-top: 30px; font-weight: 800; color: #d4af37;\"\u003e🏔️ ALPINE R-SERIES: WHERE JAPANESE PRECISION MEETS SHALLOW-MOUNT DOMINANCE 🏔️\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"alpine-warning\"\u003e\n\u003ch4 style=\"margin-top: 0; font-size: 1.3em;\"\u003e\u003cstrong\u003e⚠️ IMPORTANT INSTALLATION NOTES:\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cul style=\"margin-bottom: 0; font-size: 1.05em; line-height: 1.8;\"\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEW Condition:\u003c\/strong\u003e This Alpine RSW10D4 is NEW current production with full manufacturer backing. Expect pristine cosmetic condition, complete original packaging, included mounting hardware, owner's manual, and Alpine's manufacturer warranty coverage (contact Audio Intensity for specific warranty terms and registration procedures).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProfessional Installation Recommended:\u003c\/strong\u003e While experienced enthusiasts can install the RSW10D4, professional installation ensures optimal enclosure design, proper amplifier matching, correct wiring impedance configuration, and electrical system verification. Audio Intensity can recommend qualified installation professionals in your area.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmplifier Requirements:\u003c\/strong\u003e The RSW10D4 requires a dedicated subwoofer amplifier (NOT full-range amplifier or factory head unit power). Minimum recommended: 400W RMS @ 2 ohms from reputable manufacturer. Optimal: 500-600W RMS @ 2 ohms with subsonic filter and variable low-pass crossover. Never connect subwoofers directly to head unit speaker outputs—damage to both head unit and subwoofer will result.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnclosure Critical:\u003c\/strong\u003e Subwoofer performance depends fundamentally on enclosure design. Improper enclosure volumes, air leaks, inadequate bracing, or lack of damping material will severely degrade performance regardless of subwoofer quality. If building custom enclosures, follow the Enclosure Design Guide recommendations above or consult Audio Intensity's technical team for professional enclosure design assistance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrical System Verification:\u003c\/strong\u003e 600W RMS amplifiers draw significant current (50-75A during peak output). Ensure your installation includes proper gauge power\/ground wiring (minimum 4-gauge for runs under 15 feet, 2-gauge for longer runs), appropriate fusing (60-80A), and solid chassis grounding. High-output installations may require electrical system upgrades (high-output alternator, supplemental battery capacity).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreak-In Period:\u003c\/strong\u003e New subwoofers require mechanical break-in as surround and spider materials reach optimal compliance. Play the RSW10D4 at moderate levels (50-75% maximum output) for the first 10-20 hours of operation. Avoid sustained maximum-output operation during break-in. After break-in, excursion smoothness improves and low-frequency extension deepens.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAlternative Model Availability:\u003c\/strong\u003e Audio Intensity stocks the \u003cstrong\u003eRSW10D4 (Dual 4-Ohm)\u003c\/strong\u003e variant. If your application requires different impedance options, the \u003cstrong\u003eRSW10D2 (Dual 2-Ohm)\u003c\/strong\u003e variant is available from Alpine authorized dealers (contact Audio Intensity for sourcing assistance if needed).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: linear-gradient(135deg, #2a4560 0%, #1a3040 100%); color: #ffffff; padding: 40px; border-radius: 15px; margin-top: 40px; text-align: center; box-shadow: 0 8px 25px rgba(26, 48, 64, 0.4);\"\u003e\n\u003cp style=\"font-size: 1.4em; line-height: 1.8; margin: 0;\"\u003e🏔️ \u003cstrong\u003eALPINE R-SERIES RSW10D4\u003c\/strong\u003e 🏔️\u003c\/p\u003e\n\u003cp style=\"font-size: 1.2em; margin: 15px 0; color: #c0d4e8;\"\u003eCategory-Leading 600W RMS Power • 20mm Xmax Excursion • Gen2 DD-Linear Motor • Neodymium Magnet System\u003c\/p\u003e\n\u003cp style=\"font-size: 1.3em; margin: 15px 0; font-weight: bold; color: #d4af37;\"\u003e57 Years of Japanese Precision Engineering • NEW Current Production\u003c\/p\u003e\n\u003cp style=\"font-size: 1.1em; margin: 20px 0 0 0; font-style: italic;\"\u003eAvailable Exclusively at Audio Intensity • Contact Us for Amplifier Recommendations, Enclosure Design Consultation \u0026amp; Professional Installation Referrals\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Alpine","offers":[{"title":"Dual 4 ohm","offer_id":42347389157465,"sku":"RSW10D4","price":599.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2 ohm","offer_id":42347389190233,"sku":"RSW10D5","price":599.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/alpine-shallow-10-inch-subwoofer-powerhouse-bass-in-a-space-saving-designsubwooferalpine-943256.jpg?v=1761970490"},{"product_id":"wavtech-thinpro10-shallow-mount-10-inch-subwoofer","title":"Wāvtech thinPRO10 – Shallow-Mount 10 inch Subwoofer","description":"\u003cstyle\u003e\n  .wtp-wrap { max-width: 100%; font-family: inherit; color: #bfdbfe !important; }\n  .wtp-hero { background: #0f172a !important; border: 1px solid #1e3a5f !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #1e40af !important; }\n  .wtp-eyebrow { color: #93c5fd !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .wtp-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .wtp-hero p { color: #bfdbfe !important; font-size: 16px; margin: 0 0 18px 0; }\n  .wtp-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .wtp-badge { background: #1e40af !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .wtp-badge-alt { background: #1e293b !important; color: #bfdbfe !important; border: 1px solid #1e3a5f !important; }\n  .wtp-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #1e40af !important; padding-left: 12px; }\n  .wtp-wrap p { color: #bfdbfe !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .wtp-callout { background: #1e293b !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .wtp-callout p { color: #bfdbfe !important; margin: 0; }\n  .wtp-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .wtp-stat { background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .wtp-stat .wtp-statnum { color: #60a5fa !important; font-size: 22px; font-weight: 700; display: block; }\n  .wtp-stat .wtp-statlabel { color: #93c5fd !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .wtp-cta { background: #0f172a !important; border: 1px solid #1e3a5f !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #1e40af !important; }\n  .wtp-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .wtp-cta p { color: #bfdbfe !important; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"wtp-wrap\"\u003e\n\n  \u003cdiv class=\"wtp-hero\"\u003e\n    \u003cp class=\"wtp-eyebrow\"\u003eWavtech thinPRO Series\u003c\/p\u003e\n    \u003ch2\u003eWavtech thinPRO10 10 Inch Shallow-Mount Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eLess than 3 inches of mounting depth. 54mm of peak-to-peak excursion. 750 watts RMS. The patent-pending thinPRO10 fits where even compact 8 inch drivers cannot, with a 4.5 inch voice coil, dual-gap double-stacked motor, and a 0.35 cubic foot sealed enclosure small enough to hide almost anywhere.\u003c\/p\u003e\n    \u003cdiv class=\"wtp-badges\"\u003e\n      \u003cspan class=\"wtp-badge\"\u003e750W RMS\u003c\/span\u003e\n      \u003cspan class=\"wtp-badge\"\u003e2.875 in Depth\u003c\/span\u003e\n      \u003cspan class=\"wtp-badge\"\u003e20mm Xmax\u003c\/span\u003e\n      \u003cspan class=\"wtp-badge wtp-badge-alt\"\u003e2 Ohm or 4 Ohm SVC\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eThe Smallest Enclosure in the thinPRO Lineup\u003c\/h3\u003e\n  \u003cp\u003eThe thinPRO10 and thinPRO12 share the same power rating, excursion capability, and motor architecture. What separates them is cone area and, more importantly for installation purposes, enclosure requirement. The thinPRO12 optimum sealed volume is 0.60 cubic feet. The thinPRO10 optimum is 0.35 cubic feet. That difference is what determines which driver belongs in an under-seat build with minimal footprint, which locations can accommodate a behind-panel installation, and which vehicles have no reasonable path to 0.60 cubic feet but can fit 0.35.\u003c\/p\u003e\n  \u003cp\u003eThe 0.35 cubic foot preferred enclosure for the thinPRO10 has external dimensions of 18 inches wide by 12 inches deep by 5 inches tall. That is a box that disappears under a rear seat, behind a rear panel, or into a cargo corner that would not accept a 12 inch driver at any depth. And it delivers 750 watts RMS, 20mm Xmax, and 54mm of peak-to-peak travel from 2.875 inches of mounting depth.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-statgrid\"\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e2.875 in\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e0.35\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003eCu Ft Optimum\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e54mm\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003ePeak-to-Peak Xmech\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"wtp-stat\"\u003e\n\u003cspan class=\"wtp-statnum\"\u003e29 Hz\u003c\/span\u003e\u003cspan class=\"wtp-statlabel\"\u003eF3 Ported\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eSame Motor Architecture, 10 Inch Cone\u003c\/h3\u003e\n  \u003cp\u003eThe thinPRO10 uses the same FEA-optimized dual-gap motor structure with double-stacked strontium magnets as the thinPRO12, scaled for a 10 inch cone. The 4.5 inch voice coil (versus 5 inch on the thinPRO12) carries 4 layers of high-temperature winding on a vented polyimide composite former. The dual internal mirrored NBR spiders and reinforced axial force transfer assembly produce the same 54mm of peak-to-peak mechanical excursion from 2.875 inches of mounting depth, which is 0.125 inches shallower than the thinPRO12.\u003c\/p\u003e\n  \u003cp\u003eNo rear clearance is required. The reverse-mountable gasket and trim ring provide installation flexibility for applications where every millimeter of clearance matters. A protective grille is included with the thinPRO10, not sold separately as with the thinPRO12.\u003c\/p\u003e\n\n  \u003ch3\u003eHoneycomb Nomex and Glass Fiber Cone\u003c\/h3\u003e\n  \u003cp\u003eThe composite honeycomb cone construction is identical in design to the thinPRO12: Nomex honeycomb core with glass fiber skins providing high stiffness and low mass. The 10 inch cone has 341.76 cm2 of piston area versus 510.7 cm2 on the thinPRO12. Where the thinPRO12 cone needs more structural management to avoid breakup at high excursion, the thinPRO10 cone's smaller area makes the composite structure even more effective per unit of applied motor force.\u003c\/p\u003e\n\n  \u003ch3\u003eSmall Box, Real Extension\u003c\/h3\u003e\n  \u003cp\u003eWith Fs at 31 Hz (thinPRO10-2) and 32 Hz (thinPRO10-4), and Vas at only 17L, the thinPRO10 is specifically designed for small enclosures. The small Vas means the sealed box alignment is dominated by the enclosure stiffness from smaller volumes, reaching near-Butterworth response in the 0.35 cubic foot preferred alignment. In the preferred 0.60 cubic foot ported enclosure tuned to 34 Hz, F3 reaches 29 Hz. Complete cut lists for both preferred enclosures are published in the thinPRO10 owner's manual.\u003c\/p\u003e\n\n  \u003ch3\u003ethinPRO10 vs thinPRO12: Choosing Between Them\u003c\/h3\u003e\n  \u003cp\u003eBoth share 750W RMS, 20mm Xmax, 54mm peak-to-peak excursion, dual-gap double-stacked motor, and the same patent-pending spider design. The thinPRO10 is 0.125 inches shallower (2.875 vs 3.0 inches), needs 0.25 cubic feet less enclosure (0.35 vs 0.60 cu ft sealed optimum), has less cone area, and includes a grille rather than selling it separately. Choose the thinPRO10 when enclosure volume or footprint is the primary constraint. Choose the thinPRO12 when you have the space and want more output.\u003c\/p\u003e\n\n  \u003ch3\u003e2 Ohm or 4 Ohm: Single Voice Coil\u003c\/h3\u003e\n  \u003cp\u003eThe thinPRO10 is a single voice coil design available in two impedances. The thinPRO10-2 presents 2 ohms to the amplifier; the thinPRO10-4 presents 4 ohms. Two thinPRO10-2 in parallel presents 1 ohm; two thinPRO10-4 in parallel presents 2 ohms. Choose based on your amplifier's preferred load and your system configuration.\u003c\/p\u003e\n\n  \u003ch3\u003eProline X Enclosures for the thinPRO10\u003c\/h3\u003e\n  \u003cp\u003eAudio Intensity CNC-cuts Proline X Micro Series enclosures specifically for the Wavtech thinPRO10 in Tullahoma, Tennessee. Single 10 and dual 10 sealed configurations are available loaded with the thinPRO10 or as enclosure-only options. These are built to the thinPRO10's specifications from the start, not modified generic enclosures.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment at a glance:\u003c\/strong\u003e mounting depth 2.875 inches, cutout 9.0625 inches, overall diameter with gasket 10.8125 inches, driver displacement 0.028 cu ft. No rear clearance required. Reverse-mountable gasket and trim ring included. Grille included.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eWavtech covers the thinPRO10 with a 1-year warranty through authorized dealers, extended to 2 years when installed by an authorized Wavtech dealer. Audio Intensity is an authorized dealer. Every unit we sell is brand new current production with full warranty coverage and lifetime tech support.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-cta\"\u003e\n    \u003ch3\u003eAuthorized Wavtech Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity stocks the Wavtech thinPRO10 in both 2-ohm and 4-ohm versions and ships fast from Tullahoma, Tennessee. Tell us your available space, your amplifier, and your vehicle and we will help you spec the right enclosure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .wtp-enc { max-width: 100%; font-family: inherit; }\n  .wtp-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #1e40af !important; padding-left: 12px; }\n  .wtp-enc p { color: #bfdbfe !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .wtp-enc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 20px 0; }\n  @media (max-width: 640px) { .wtp-enc-grid { grid-template-columns: 1fr; } }\n  .wtp-enc-card { background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 10px; overflow: hidden; }\n  .wtp-enc-card-head { background: #1e40af !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .wtp-enc-table { width: 100%; border-collapse: collapse; }\n  .wtp-enc-table th { background: #1e3a5f !important; color: #93c5fd !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .wtp-enc-table td { padding: 10px 12px; border-bottom: 1px solid #1e3a5f !important; font-size: 14px; }\n  .wtp-enc-table td:first-child { color: #bfdbfe !important; font-weight: 600; }\n  .wtp-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .wtp-enc-table tr:last-child td { border-bottom: none !important; }\n  .wtp-enc-table .wtp-optimal td { background: #172554 !important; }\n  .wtp-enc-table .wtp-optimal td:first-child { color: #4ade80 !important; }\n  .wtp-char { font-size: 11px; color: #4b6fa5 !important; display: block; font-weight: 400; margin-top: 2px; }\n  .wtp-graph-wrap { background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .wtp-graph-title { color: #93c5fd !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .wtp-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .wtp-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #4b6fa5 !important; }\n  .wtp-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .wtp-enc-note { background: #1e293b !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .wtp-enc-note p { color: #bfdbfe !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .wtp-enc-link { color: #60a5fa !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"wtp-enc\"\u003e\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing Wavtech's published Thiele-Small parameters from the thinPRO10 owner's manual, here are the predicted Qtc, system resonance (Fc), and F3 rolloff for both variants across three sealed volumes. Calculated values match Wavtech's published enclosure data: at the recommended 0.35 cu ft optimum, the thinPRO10-2 produces F3 at 42-43 Hz and the thinPRO10-4 at 45 Hz, consistent with the manual's published figures.\u003c\/p\u003e\n  \u003cp\u003eThe thinPRO10's smaller Vas (17L) compared to the thinPRO12 (42L) means it needs less enclosure volume to achieve the same Qtc. The recommended 0.35 cu ft sealed box is genuinely compact, approximately 18 inches wide by 12 inches deep by 5 inches external height, small enough to fit almost anywhere a standard 10 inch driver can reach.\u003c\/p\u003e\n\n  \u003cdiv class=\"wtp-enc-grid\"\u003e\n    \u003cdiv class=\"wtp-enc-card\"\u003e\n      \u003cdiv class=\"wtp-enc-card-head\"\u003ethinPRO10-2  |  Qts 0.55  |  Fs 31 Hz  |  Vas 17 L\u003c\/div\u003e\n      \u003ctable class=\"wtp-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.25 cu ft\u003cspan class=\"wtp-char\"\u003eCompact minimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.014\u003c\/td\u003e\n\u003ctd\u003e57.2 Hz\u003c\/td\u003e\n\u003ctd\u003e44.7 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"wtp-optimal\"\u003e\n\u003ctd\u003e0.35 cu ft ★\u003cspan class=\"wtp-char\"\u003eWavtech recommended optimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.906\u003c\/td\u003e\n\u003ctd\u003e51.1 Hz\u003c\/td\u003e\n\u003ctd\u003e42.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.60 cu ft\u003cspan class=\"wtp-char\"\u003eMaximum sealed \/ flattest response\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.778\u003c\/td\u003e\n\u003ctd\u003e43.8 Hz\u003c\/td\u003e\n\u003ctd\u003e40.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n    \u003cdiv class=\"wtp-enc-card\"\u003e\n      \u003cdiv class=\"wtp-enc-card-head\"\u003ethinPRO10-4  |  Qts 0.52  |  Fs 32 Hz  |  Vas 17 L\u003c\/div\u003e\n      \u003ctable class=\"wtp-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.25 cu ft\u003cspan class=\"wtp-char\"\u003eCompact minimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.959\u003c\/td\u003e\n\u003ctd\u003e59.0 Hz\u003c\/td\u003e\n\u003ctd\u003e47.3 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"wtp-optimal\"\u003e\n\u003ctd\u003e0.35 cu ft ★\u003cspan class=\"wtp-char\"\u003eWavtech recommended optimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.857\u003c\/td\u003e\n\u003ctd\u003e52.7 Hz\u003c\/td\u003e\n\u003ctd\u003e45.1 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.60 cu ft\u003cspan class=\"wtp-char\"\u003eMaximum sealed \/ flattest response\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.735\u003c\/td\u003e\n\u003ctd\u003e45.3 Hz\u003c\/td\u003e\n\u003ctd\u003e43.6 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"wtp-enc-grid\"\u003e\n    \u003cdiv class=\"wtp-graph-wrap\"\u003e\n      \u003cp class=\"wtp-graph-title\"\u003ethinPRO10-2 Frequency Response — Sealed\u003c\/p\u003e\n      \u003csvg viewbox=\"0 0 420 200\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"38\" y=\"14\" width=\"368\" height=\"152\" fill=\"#0a0f1a\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"128.0\" y2=\"128.0\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"132.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#4b6fa5\"\u003e-12dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"109.0\" y2=\"109.0\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"113.0\" text-anchor=\"end\" font-size=\"9\" fill=\"#4b6fa5\"\u003e-9dB\u003c\/text\u003e\n\u003cline x1=\"38\" x2=\"406\" y1=\"90.0\" y2=\"90.0\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"34\" y=\"94.0\" 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stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"123.1\" x2=\"123.1\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"158.5\" x2=\"158.5\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"185.9\" x2=\"185.9\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"208.3\" x2=\"208.3\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"243.6\" x2=\"243.6\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"271.0\" x2=\"271.0\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"320.9\" x2=\"320.9\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003cline x1=\"356.2\" x2=\"356.2\" y1=\"14\" y2=\"166\" stroke=\"#0f172a\" 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361.8,51.9 363.1,51.9 364.3,51.9 365.5,51.9 366.7,51.9 368.0,51.9 369.2,51.9 370.4,51.9 371.7,51.9 372.9,51.9 374.1,51.9 375.3,51.9 376.6,51.9 377.8,51.9 379.0,51.9 380.2,51.9 381.5,51.9 382.7,51.9 383.9,51.9 385.1,51.9 386.4,51.9 387.6,51.9 388.8,51.9 390.1,51.9 391.3,51.9 392.5,51.9 393.7,51.9 395.0,51.9 396.2,51.9 397.4,51.9 398.6,51.9 399.9,51.9 401.1,51.9 402.3,51.9 403.5,51.9 404.8,51.9 406.0,51.9\" fill=\"none\" stroke=\"#60a5fa\" stroke-width=\"1.5\" stroke-linejoin=\"round\" stroke-dasharray=\"5 3\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n      \u003cdiv class=\"wtp-graph-legend\"\u003e\n        \u003cspan class=\"wtp-graph-legend-item\"\u003e\u003cspan class=\"wtp-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.25 cu ft (Qtc 0.959)\u003c\/span\u003e\n        \u003cspan class=\"wtp-graph-legend-item\"\u003e\u003cspan class=\"wtp-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.35 cu ft (Qtc 0.857) ★\u003c\/span\u003e\n        \u003cspan class=\"wtp-graph-legend-item\"\u003e\u003cspan class=\"wtp-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e0.60 cu ft (Qtc 0.735)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"wtp-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#60a5fa !important;\"\u003ePorted alignment:\u003c\/strong\u003e Wavtech's preferred 0.60 cu ft ported enclosure tuned to 34 Hz reaches F3 at 29 Hz for both variants. Minimum port area is 12.5 sq in (4 inch round equivalent). A subsonic filter at or below 34 Hz is required. The preferred ported enclosure external dimensions are 14.5 in H x 28.5 in W x 4 in D. Complete cut lists for both the 0.35 cu ft sealed and 0.60 cu ft ported enclosures are in the thinPRO10 owner's manual. \u003ca class=\"wtp-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own sealed numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #0f172a !important; border: 1px solid #1e3a5f !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #bfdbfe !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eThe \u003cstrong style=\"color: #60a5fa !important;\"\u003eEnclosures tab above\u003c\/strong\u003e lists the Proline X Micro Series enclosures we CNC-cut in Tullahoma, Tennessee specifically for the thinPRO10, including single and dual 10 inch sealed configurations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Wavtech","offers":[{"title":"2 Ohm","offer_id":42701780877401,"sku":"thinPRO 10-2","price":749.99,"currency_code":"USD","in_stock":true},{"title":"4 Ohm","offer_id":42701780910169,"sku":"thinPRO10-4","price":749.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/wavtech-thinpro10-shallow-mount-10-inch-subwoofersubwooferwavtech-4053945.webp?v=1761970805"},{"product_id":"prodigy-audio-10-inch-subwoofer-nb3-series","title":"Prodigy Audio 10 inch Subwoofer | NB3 Series","description":"\u003ch2\u003eUltra-Shallow Performance Without Compromise\u003c\/h2\u003e\n\u003cp\u003eThe Prodigy Audio NB3-10d4 is a masterclass in space-efficient engineering. Designed for the most restrictive environments, this 10-inch shallow-mount subwoofer features a remarkably slim 3.000-inch mounting depth. Despite its low profile, it delivers a massive 600W RMS, powered by a high-strength motor with a BL of 23.365. With a refined Qts of 0.407 and an FS of 36.406Hz, the NB3-10d4 provides the punchy, authoritative low-end that enthusiasts demand in applications where a traditional driver simply will not fit.\u003c\/p\u003e\n\n\u003ch2\u003ePrecision Control and Thermal Integrity\u003c\/h2\u003e\n\u003cp\u003eThe NB3-10d4 is built to handle heavy daily use, utilizing a 151.63g moving mass (Mms) and a specialized suspension system with a Cms of 74.178. This configuration ensures the 2.5-inch voice coil remains centered and controlled even at its 11mm Xmax limit. To maintain performance during extended play, the motor architecture is designed to manage thermal energy effectively within the compact cast-aluminum housing, ensuring the NB3-10d4 delivers consistent, uncompressed output in high-pressure, small-volume environments.\u003c\/p\u003e\n\n\u003ch2\u003eOptimized for Compact Enclosures\u003c\/h2\u003e\n\u003cp\u003eEngineered for the modern installer, the NB3-10d4 is specifically optimized for a 0.65 ft³ sealed enclosure, making it the perfect choice for under-seat truck boxes and stealth side-panel installs. With a 9.125-inch cutout and 10.250-inch overall diameter, it fits seamlessly into custom baffles. Its low 0.10 ft³ displacement allows you to maximize the internal air volume of your enclosure, ensuring the Dual 4-ohm NB3-10d4 translates every watt of power into clean, impactful acoustic energy.\u003c\/p\u003e","brand":"Prodigy","offers":[{"title":"Default Title","offer_id":43048592408665,"sku":"NB3-10D4","price":148.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/prodigy-audio-10-inch-subwoofer-nb3-seriessubwooferprodigy-6998819.webp?v=1770559873"},{"product_id":"prodigy-audio-12-inch-subwoofer-nb3-series","title":"Prodigy Audio 12 inch Subwoofer | NB3 Series","description":"\u003ch2\u003eElite Shallow-Mount Power with a 3-Inch Voice Coil\u003c\/h2\u003e\n\u003cp\u003eThe Prodigy Audio NB3-12d4 is a high-output juggernaut engineered to deliver 800W RMS in an ultra-shallow 3.375-inch footprint. Built for enthusiasts who refuse to sacrifice impact for space, this 12-inch driver features a heavy-duty 3.0-inch high-temperature copper voice coil and a massive 80-ounce ferrite motor. This combination provides the thermal capacity and \"Old School Slam\" required for serious SQL systems in restricted mounting areas like under-seat truck enclosures or slim behind-the-seat baffles.\u003c\/p\u003e\n\n\u003ch2\u003eLinear Precision and Advanced Thermal Control\u003c\/h2\u003e\n\u003cp\u003eStability is at the core of the NB3-12d4’s design. It maintains absolute composure at its 11mm Xmax limit thanks to a 189.22g moving mass and a specialized Nomex-Cotton blend suspension system with stitched tinsel leads. To manage the heat generated by an 800W power rating within a compact steel housing, the motor utilizes an FEA-designed center pole vent. This architecture ensures the 36.2Hz FS delivers deep, uncompressed low-end transients during demanding daily use without the risk of thermal failure.\u003c\/p\u003e\n\n\u003ch2\u003eOptimized for Compact Stealth Integration\u003c\/h2\u003e\n\u003cp\u003eThe NB3-12d4 is specifically tuned for high-pressure, small-volume environments, making it a definitive choice for a 0.75 ft³ sealed enclosure. With a 10.625-inch cutout and 12.250-inch overall diameter, it integrates seamlessly into custom or prefab truck boxes. Its efficient 0.13 ft³ displacement maximizes internal air volume, ensuring that every watt is translated into clean, authoritative acoustic energy. The NB3-12d4 proves that high-fidelity, 800W bass is achievable even when mounting depth is at a premium.\u003c\/p\u003e","brand":"Prodigy","offers":[{"title":"Default Title","offer_id":43050950393945,"sku":"NB3-12D4","price":171.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/prodigy-audio-12-inch-subwoofer-nb3-seriessubwooferprodigy-8047561.png?v=1770621681"},{"product_id":"arc-audio-sw10-10-inch-shallow-mount-subwoofer","title":"Arc Audio SW10 10 Inch Shallow-Mount Subwoofer","description":"\u003cstyle\u003e\n  .arc-wrap { max-width: 100%; font-family: inherit; color: #e4e4e7 !important; }\n  .arc-hero { background: #18181b !important; border: 1px solid #3f3f46 !important; padding: 36px 28px; border-radius: 12px; margin-bottom: 28px; border-bottom: 4px solid #d71920 !important; }\n  .arc-eyebrow { color: #c8ccd0 !important; font-size: 13px; font-weight: 700; letter-spacing: 2px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-hero h2 { color: #ffffff !important; font-size: 28px; margin: 0 0 8px 0; line-height: 1.2; }\n  .arc-hero p { color: #e4e4e7 !important; font-size: 16px; margin: 0 0 18px 0; }\n  .arc-badges { display: flex; flex-wrap: wrap; gap: 8px; }\n  .arc-badge { background: #d71920 !important; color: #ffffff !important; font-size: 13px; font-weight: 600; padding: 6px 12px; border-radius: 4px; }\n  .arc-badge-alt { background: #27272a !important; color: #e4e4e7 !important; border: 1px solid #3f3f46 !important; }\n  .arc-wrap h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-wrap p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-callout { background: #27272a !important; border: 1px solid #c8ccd0 !important; border-radius: 8px; padding: 18px 20px; margin: 22px 0; }\n  .arc-callout p { color: #e4e4e7 !important; margin: 0; }\n  .arc-statgrid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 22px 0; }\n  .arc-stat { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px; text-align: center; }\n  .arc-stat .arc-statnum { color: #f04657 !important; font-size: 22px; font-weight: 700; display: block; }\n  .arc-stat .arc-statlabel { color: #c8ccd0 !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; display: block; margin-top: 4px; }\n  .arc-cta { background: #18181b !important; border: 1px solid #3f3f46 !important; padding: 28px; border-radius: 12px; margin-top: 30px; text-align: center; border-top: 4px solid #d71920 !important; }\n  .arc-cta h3 { color: #ffffff !important; border-left: none !important; padding-left: 0; margin-top: 0; }\n  .arc-cta p { color: #e4e4e7 !important; }\n  .arc-new { background: #2d0a0b !important; border: 1px solid #d71920 !important; border-radius: 8px; padding: 14px 18px; margin: 0 0 20px 0; }\n  .arc-new p { color: #e4e4e7 !important; font-size: 14px; margin: 0; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-wrap\"\u003e\n\n  \u003cdiv class=\"arc-new\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#f04657 !important;\"\u003eNew for 2026:\u003c\/strong\u003e The Arc Audio SW10 launched in June 2026. This is an early listing based on confirmed specifications from Arc Audio's product announcement. Full Thiele-Small parameters and complete physical dimensions are pending Arc Audio's official spec sheet release. Contact Audio Intensity for the latest availability and pricing information.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-hero\"\u003e\n    \u003cp class=\"arc-eyebrow\"\u003eArc Audio SW Series Subwoofers\u003c\/p\u003e\n    \u003ch2\u003eArc Audio SW10 10 Inch Shallow-Mount Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eA genuinely new shallow-mount engineering approach from Arc Audio. The SW10 puts the N42UH neodymium motor on the outside of the enclosure, uses a CNC-machined vented iron motor cap optimized for front-loaded cavity behavior, and delivers 14.7mm of one-way linear Xmax from 2.4 inches of mounting depth. Built for the installations where Arc Audio's ARC and A-Series depth requirements are too much.\u003c\/p\u003e\n    \u003cdiv class=\"arc-badges\"\u003e\n      \u003cspan class=\"arc-badge\"\u003e2.4 in Depth\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003e14.7mm Xmax\u003c\/span\u003e\n      \u003cspan class=\"arc-badge\"\u003eN42UH Neodymium\u003c\/span\u003e\n      \u003cspan class=\"arc-badge arc-badge-alt\"\u003eD2 or D4\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eFront-Mounted Motor: Why It Matters\u003c\/h3\u003e\n  \u003cp\u003eStandard subwoofer motors sit behind the cone, which means the motor is inside the enclosure when the driver is installed. In a sealed enclosure the motor is surrounded by compressed air and trapped heat with no airflow. Thermal management then depends entirely on the basket geometry and whatever conduction path the frame provides to the external mounting surface.\u003c\/p\u003e\n  \u003cp\u003eThe SW10 reverses this. The N42UH neodymium motor is positioned at the front of the driver, outside the enclosure once the subwoofer is installed. The motor sits in free air, exposed directly to ambient air circulation rather than confined inside a sealed cavity. Arc Audio designed the CNC-machined vented iron motor cap specifically to work in this front-loaded configuration, managing the acoustic relationship between the motor structure and the loading surface directly in front of it. This is not a minor construction variation: it is a different thermal and acoustic architecture from the ground up.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-statgrid\"\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e2.4 in\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eMounting Depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e14.7mm\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eOne-Way Xmax\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003eN42UH\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eNeo Grade\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-stat\"\u003e\n\u003cspan class=\"arc-statnum\"\u003e0.6 cu ft\u003c\/span\u003e\u003cspan class=\"arc-statlabel\"\u003eSealed Optimum\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eN42UH Neodymium Grade\u003c\/h3\u003e\n  \u003cp\u003eN42UH is a specific grade of neodymium magnet material, where N42 denotes magnetic energy density (approximately 42 MGOe) and UH denotes ultra-high temperature resistance. Standard neodymium magnets lose flux density at elevated temperatures: this is called thermal demagnetization and it is why cheap neodymium motor designs fail under sustained high-power use. N42UH material maintains its magnetic properties at temperatures up to approximately 180 degrees Celsius, substantially higher than standard or even high-temperature grades. This is the material grade choice that allows the SW10's compact motor structure to sustain real-world power handling without progressive performance degradation.\u003c\/p\u003e\n\n  \u003ch3\u003eRaised-Cup Cellulose Fiber Cone\u003c\/h3\u003e\n  \u003cp\u003eThe SW10 uses a raised-cup cone profile constructed from reinforced cellulose fiber with a composite hydrophobic coating. The raised-cup geometry, where the cone's apex is elevated forward rather than sitting at the plane of the basket, is an excursion management approach that allows the voice coil to travel further while maintaining mechanical stability. The cellulose fiber base provides natural acoustic damping combined with the hydrophobic coating to resist moisture in automotive environments. The low-shore butyl rubber surround has high compliance and long-term durability advantages over foam surrounds, which degrade under UV and temperature cycling.\u003c\/p\u003e\n\n  \u003ch3\u003eStage-Baked Tempered Voice Coil\u003c\/h3\u003e\n  \u003cp\u003eThe 2.5 inch aluminum voice coil former is wound with high-temperature wire and processed through a stage-baked tempering cycle before assembly. Stage-baking drives off residual moisture, drives adhesives to full cure strength, and pre-stresses the voice coil assembly to improve thermal stability under sustained power. Arc Audio specifies this process specifically to address the failure mode where adhesives in the voice coil assembly soften and migrate under high power, causing imbalance and ultimately voice coil failure. The aluminum former conducts heat away from the winding and toward the ventilated motor structure more efficiently than Nomex or Kapton formers of equivalent wall thickness.\u003c\/p\u003e\n\n  \u003ch3\u003eSpring-Loaded Terminals\u003c\/h3\u003e\n  \u003cp\u003eThe SW10 uses high-tension spring-loaded push terminals rather than threaded set screws. Arc Audio's stated rationale is installation reliability in compact enclosures where a tool cannot always reach the terminal: push-in connections with high retention force provide consistent contact without requiring a hex key or terminal wrench. In down-fire and front-fire installations where the motor faces the baffle, tool access to rear terminals is often restricted.\u003c\/p\u003e\n\n  \u003ch3\u003eSW10 vs Arc Audio A10 vs ARC 10\u003c\/h3\u003e\n  \u003cp\u003eThe Arc Audio A10 is a standard shallow-mount driver at 3.85 inches of mounting depth. The Arc Audio ARC 10 is a standard-depth sound quality driver. The SW10 is the first Arc Audio subwoofer at sub-3-inch mounting depth, with a front-motor architecture that does not appear on any previous Arc Audio subwoofer design. Choose the SW10 when the available depth is under 3 inches and sound quality matters. Choose the A10 when the installation allows 3.85 inches and the price delta matters. Choose the ARC 10 when depth is not a constraint and maximum sound quality is the priority.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-callout\"\u003e\n    \u003cp\u003e\u003cstrong\u003eFitment note:\u003c\/strong\u003e The SW10 is optimized for front-loaded enclosure applications: under-seat truck enclosures, seat-back loaded systems, stealth installations, and close-coupled down-fire designs where the motor faces the loading surface. The external motor position is part of this design intent. At 2.4 inches of mounting depth, the SW10 fits installations that no other Arc Audio driver accommodates. Full cutout diameter, overall diameter, and physical dimensions are pending Arc Audio's official spec sheet release.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003ch3\u003eBuilt and Backed\u003c\/h3\u003e\n  \u003cp\u003eThe Arc Audio SW10 carries the standard Arc Audio 1-year warranty through authorized dealers. Audio Intensity is an authorized Arc Audio dealer. Every unit we sell is brand new current production with full warranty coverage and lifetime tech support.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-cta\"\u003e\n    \u003ch3\u003eAuthorized Arc Audio Dealer\u003c\/h3\u003e\n    \u003cp\u003eAudio Intensity ships the Arc Audio SW10 from Tullahoma, Tennessee. This is a just-launched product and inventory is limited. Contact us for current availability and to confirm fitment for your specific installation.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cstyle\u003e\n  .arc-enc { max-width: 100%; font-family: inherit; }\n  .arc-enc h3 { color: #ffffff !important; font-size: 22px; margin: 28px 0 12px 0; border-left: 4px solid #d71920 !important; padding-left: 12px; }\n  .arc-enc p { color: #e4e4e7 !important; font-size: 16px; line-height: 1.65; margin: 0 0 14px 0; }\n  .arc-enc-card { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; overflow: hidden; margin: 20px 0; }\n  .arc-enc-card-head { background: #d71920 !important; color: #ffffff !important; padding: 10px 16px; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; }\n  .arc-enc-table { width: 100%; border-collapse: collapse; }\n  .arc-enc-table th { background: #27272a !important; color: #a1a1aa !important; font-size: 12px; font-weight: 600; letter-spacing: 1px; text-transform: uppercase; padding: 8px 12px; text-align: left; }\n  .arc-enc-table td { padding: 10px 12px; border-bottom: 1px solid #27272a !important; font-size: 14px; }\n  .arc-enc-table td:first-child { color: #e4e4e7 !important; font-weight: 600; }\n  .arc-enc-table td:not(:first-child) { color: #ffffff !important; text-align: center; }\n  .arc-enc-table tr:last-child td { border-bottom: none !important; }\n  .arc-enc-table .arc-optimal td { background: #1a0a0b !important; }\n  .arc-enc-table .arc-optimal td:first-child { color: #4ade80 !important; }\n  .arc-char { font-size: 11px; color: #52525b !important; display: block; font-weight: 400; margin-top: 2px; }\n  .arc-graph-wrap { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 10px; padding: 16px; margin: 16px 0; }\n  .arc-graph-title { color: #a1a1aa !important; font-size: 12px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .arc-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #71717a !important; }\n  .arc-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .arc-enc-note { background: #27272a !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .arc-enc-note p { color: #e4e4e7 !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .arc-enc-link { color: #f04657 !important; text-decoration: underline; }\n\u003c\/style\u003e\n\n\u003cdiv class=\"arc-enc\"\u003e\n  \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n  \u003cp\u003eUsing Arc Audio's published Thiele-Small parameters for the SW10 D2 (parallel configuration), here are the predicted Qtc, system resonance (Fc), and F3 rolloff across three sealed volumes. Arc Audio recommends 0.6 cubic feet as the optimum sealed volume. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n  \u003cp\u003eThe SW10's Fs of 39 Hz and Vas of 13.33 L produce a well-controlled sealed alignment across the recommended volume range. The EBP of 53 confirms sealed enclosures as the design priority. All three volumes produce Qtc below 1.0, with the recommended 0.6 cu ft landing at Qtc 0.847, a slightly warm alignment with good bass presence and extension to F3 at 45 Hz.\u003c\/p\u003e\n\n  \u003cdiv class=\"arc-enc-card\"\u003e\n    \u003cdiv class=\"arc-enc-card-head\"\u003eSW10 D2 (Parallel)  |  Qts 0.634  |  Fs 39 Hz  |  Vas 13.33 L\u003c\/div\u003e\n    \u003ctable class=\"arc-enc-table\"\u003e\n      \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n      \u003ctr\u003e\n\u003ctd\u003e0.40 cu ft\u003cspan class=\"arc-char\"\u003eCompact minimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.935\u003c\/td\u003e\n\u003ctd\u003e57.5 Hz\u003c\/td\u003e\n\u003ctd\u003e46.7 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003ctr class=\"arc-optimal\"\u003e\n\u003ctd\u003e0.60 cu ft ★\u003cspan class=\"arc-char\"\u003eArc Audio recommended 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class=\"arc-graph-legend\"\u003e\n      \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.40 cu ft (Qtc 0.935)\u003c\/span\u003e\n      \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.60 cu ft (Qtc 0.847) ★ Arc Recommended\u003c\/span\u003e\n      \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e0.80 cu ft (Qtc 0.799)\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-enc-note\"\u003e\n    \u003cp\u003e\u003cstrong style=\"color:#f04657 !important;\"\u003eNote on impedance:\u003c\/strong\u003e T\/S parameters are measured for the D2 variant. The D4 variant will produce slightly different sealed alignments due to differing Qts and Vas values. D4 T\/S data not included in current Arc Audio release; this table reflects D2 parallel (approximately 1 ohm). \u003ca class=\"arc-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n  \u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 20px; margin: 24px 0;\"\u003e\n  \u003cp style=\"color: #e4e4e7 !important; font-size: 15px; margin: 0; line-height: 1.6;\"\u003eThe \u003cstrong style=\"color: #f04657 !important;\"\u003eEnclosures tab above\u003c\/strong\u003e will list Proline X enclosures purpose-built for the SW10 once full physical dimensions are confirmed from Arc Audio. Contact Audio Intensity for current enclosure guidance.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Arc Audio","offers":[{"title":"Dual 4ohm","offer_id":43445299675225,"sku":"SW10D4","price":589.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2ohm","offer_id":43445299707993,"sku":"SW10D2","price":589.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/arc-audio-sw12-12-inch-shallow-mount-subwoofersubwooferarc-audio-8464617.png?v=1781852227"},{"product_id":"arc-audio-sw12-12-inch-shallow-mount-subwoofer","title":"Arc Audio SW12 12 Inch Shallow-Mount Subwoofer","description":"\u003cstyle\u003e\n  .arc-d { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.75; color: #1e293b; max-width: 1100px; margin: 0 auto; background: #ffffff; }\n  .arc-d * { box-sizing: border-box; }\n  .arc-d-hero { background: linear-gradient(135deg, #0a0a0a 0%, #2a0a0c 55%, #d71920 140%); padding: 54px 36px; text-align: center; color: #fff; 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font-size: 1.4em; margin: 0 0 10px; border: none; padding: 0; }\n  .arc-d-cta p { opacity: .92; margin: 0 auto; max-width: 640px; color: #e4e4e7 !important; }\n  \/* enclosure performance section (dark) *\/\n  .arc-enc { background: #18181b !important; color: #e4e4e7 !important; padding: 42px 36px; border-bottom: 1px solid #e5e7eb; font-family: 'Helvetica Neue', Arial, sans-serif; }\n  .arc-enc h3 { color: #ffffff !important; font-size: 1.45em; font-weight: 700; margin: 0 0 14px 0; border-left: 4px solid #d71920; padding-left: 14px; }\n  .arc-enc p { color: #cbd5e1 !important; font-size: 15px; line-height: 1.7; margin: 0 0 14px 0; }\n  .arc-enc-card { background: #27272a !important; border: 1px solid #3f3f46 !important; border-radius: 8px; overflow: hidden; margin: 18px 0; }\n  .arc-enc-card-head { padding: 12px 16px; font-size: 13px; font-weight: 700; letter-spacing: .5px; text-transform: uppercase; color: #f04657 !important; background: #1c1c1f !important; border-bottom: 1px solid #3f3f46 !important; }\n  .arc-enc-table { width: 100%; border-collapse: collapse; }\n  .arc-enc-table th { background: #18181b !important; color: #a1a1aa !important; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; padding: 10px 14px; text-align: left; border-bottom: 1px solid #3f3f46 !important; }\n  .arc-enc-table td { padding: 12px 14px; border-bottom: 1px solid #27272a !important; color: #e4e4e7 !important; font-size: 14px; }\n  .arc-enc-table tr:last-child td { border-bottom: none; }\n  .arc-optimal td { background: #14532d !important; color: #ffffff !important; font-weight: 600; }\n  .arc-char { display: block; font-size: 12px; color: #a1a1aa !important; font-weight: 400; margin-top: 2px; }\n  .arc-optimal .arc-char { color: #bbf7d0 !important; }\n  .arc-graph-wrap { background: #18181b !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 14px; margin: 18px 0; }\n  .arc-graph-title { color: #a1a1aa !important; font-size: 13px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin: 0 0 10px 0; }\n  .arc-graph-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 10px; }\n  .arc-graph-legend-item { display: flex; align-items: center; gap: 6px; font-size: 12px; color: #71717a !important; }\n  .arc-graph-legend-swatch { width: 24px; height: 3px; border-radius: 2px; display: inline-block; }\n  .arc-enc-note { background: #27272a !important; border: 1px solid #3f3f46 !important; border-radius: 8px; padding: 16px 18px; margin: 18px 0 0 0; }\n  .arc-enc-note p { color: #e4e4e7 !important; font-size: 14px; margin: 0; line-height: 1.6; }\n  .arc-enc-link { color: #f04657 !important; text-decoration: underline; }\n  @media(max-width:600px){ .arc-d-hero h2{font-size:1.7em;} .arc-d-section,.arc-enc,.arc-d-cta,.arc-d-hero{padding-left:20px;padding-right:20px;} }\n\u003c\/style\u003e\n\u003cdiv class=\"arc-d\"\u003e\n\n  \u003cdiv class=\"arc-d-hero\"\u003e\n    \u003ch2\u003eArc Audio SW12 Shallow-Mount Subwoofer\u003c\/h2\u003e\n    \u003cp\u003eA real 12-inch SQ driver in 2.625 inches of mounting depth\u003c\/p\u003e\n    \u003cdiv class=\"arc-d-badges\"\u003e\n      \u003cspan class=\"arc-d-badge\"\u003e2.625\" Mounting Depth\u003c\/span\u003e\n      \u003cspan class=\"arc-d-badge\"\u003e15.5mm Xmax\u003c\/span\u003e\n      \u003cspan class=\"arc-d-badge\"\u003e400W RMS\u003c\/span\u003e\n      \u003cspan class=\"arc-d-badge\"\u003eNeo Motor\u003c\/span\u003e\n      \u003cspan class=\"arc-d-badge\"\u003eD2 or D4\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-stats\"\u003e\n    \u003cdiv class=\"arc-d-stat\"\u003e\n\u003cspan class=\"n\"\u003e2.625\"\u003c\/span\u003e\u003cspan class=\"l\"\u003emounting depth\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-d-stat\"\u003e\n\u003cspan class=\"n\"\u003e15.5mm\u003c\/span\u003e\u003cspan class=\"l\"\u003eone-way Xmax\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-d-stat\"\u003e\n\u003cspan class=\"n\"\u003e400 \/ 800\u003c\/span\u003e\u003cspan class=\"l\"\u003ewatts RMS \/ peak\u003c\/span\u003e\n\u003c\/div\u003e\n    \u003cdiv class=\"arc-d-stat\"\u003e\n\u003cspan class=\"n\"\u003e0.8\u003c\/span\u003e\u003cspan class=\"l\"\u003ecu ft recommended\u003c\/span\u003e\n\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-section\"\u003e\n    \u003ch3\u003eA Full 12 in 2.625 Inches\u003c\/h3\u003e\n    \u003cp\u003eThe Arc Audio SW12 puts a real 12-inch cone in a chassis that mounts in just 2.625 inches of depth. That is shallow enough for behind-seat and under-seat truck installs that would never take a conventional 12, without giving up cone area. With an 11-inch cutout and a 12.5-inch outer diameter, it drops into a properly cut shallow baffle and goes to work.\u003c\/p\u003e\n    \u003cp\u003eThis is the bigger brother to the SW10. Where the SW10 covers tight 10-inch builds, the SW12 brings more cone area, more displacement, and deeper extension for the installer who wants 12-inch output in a thin package.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-section\"\u003e\n    \u003ch3\u003eThe Motor Lives Outside the Cone\u003c\/h3\u003e\n    \u003cp\u003eThe SW12 uses a front-mounted N42UH neodymium motor with a CNC-machined vented iron cap. Mounting the motor in front of the cone rather than behind it is how Arc keeps the depth down, and it has a real acoustic benefit: in a down-fire or front-fire enclosure the motor sits in the open cavity rather than buried inside the sealed air volume, so it breathes free air and the box keeps its true net airspace.\u003c\/p\u003e\n    \u003cdiv class=\"arc-d-grid\"\u003e\n      \u003cdiv class=\"arc-d-card\"\u003e\n        \u003ch4\u003e15.5mm of One-Way Xmax\u003c\/h4\u003e\n        \u003cp\u003eSerious linear excursion for a driver this thin. The SW12 moves real air for a shallow-mount, which is where most thin 12s fall short.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"arc-d-card\"\u003e\n        \u003ch4\u003eStage-Baked 3-Inch Coil\u003c\/h4\u003e\n        \u003cp\u003eA 3-inch tempered aluminum voice coil former handles heat and power without the compression that plagues smaller coils under long, loud drive time.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"arc-d-card\"\u003e\n        \u003ch4\u003eVented Iron Cap\u003c\/h4\u003e\n        \u003cp\u003eThe CNC-machined vented cap pulls heat out of the motor and lets the assembly stay composed when you lean on it.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-section\"\u003e\n    \u003ch3\u003eEngineered for Sound Quality\u003c\/h3\u003e\n    \u003cp\u003eEvery part of the SW12 is chosen for accuracy, not just output. The raised-cup cone is reinforced cellulose fiber with a hydrophobic composite coating, the surround is low-shore butyl rubber for clean, linear travel, and the spider is a Nomex and cotton blend that holds the cone honest through its full excursion. The result is tight, controlled, musical bass that integrates with a real front stage rather than fighting it.\u003c\/p\u003e\n    \u003cp\u003eThe SW12 is a sealed-box driver by design. Its EBP of 45.9 places it firmly in sealed territory, and Arc recommends 0.8 cubic feet as the optimum sealed volume. Build it sealed and it rewards you with the kind of accurate, fast low end that sound-quality builds are after.\u003c\/p\u003e\n    \u003cdiv class=\"arc-d-highlight\"\u003e\n      \u003cp\u003e\u003cstrong\u003ePublished T\/S, no guesswork.\u003c\/strong\u003e Fs 33 Hz, Qts 0.616, Qes 0.719, Qms 4.289, Vas 33.73 L, BL 12.024, Mms 277.4 g, Sd 532.97 cm², sensitivity 85.29 dB. Full data so you can model the box before you cut it.\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-section\"\u003e\n    \u003ch3\u003ePower and Wiring\u003c\/h3\u003e\n    \u003cp\u003eThe SW12 handles 400 watts RMS and 800 watts peak, and comes in two coil configurations so it matches your amplifier rather than the other way around. The Dual 2-Ohm wires to 1 ohm or 4 ohm for amplifiers that make their power into low impedance. The Dual 4-Ohm wires to 2 ohm or 8 ohm for a wider range of amps. Both deliver the same power handling and the same shallow profile.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n    \u003cdiv class=\"arc-enc\"\u003e\n    \u003ch3\u003eSealed Enclosure Performance: Pre-Calculated Results\u003c\/h3\u003e\n    \u003cp\u003eUsing Arc Audio's published Thiele-Small parameters for the SW12 D4 (parallel configuration), here are the predicted Qtc, system resonance (Fc), and F3 rolloff across three sealed volumes. Arc Audio recommends 0.8 cubic feet as the optimum sealed volume. Calculated using the same formulas as the Audio Intensity Sealed Box Calculator.\u003c\/p\u003e\n    \u003cp\u003eThe SW12's Fs of 33 Hz and Vas of 33.73 L produce deeper extension than the SW10 in equivalent enclosure volumes. The EBP of 45.9 places this driver firmly in sealed enclosure territory. At the recommended 0.8 cu ft, Qtc 0.972 gives a slightly warm alignment with F3 at 41.5 Hz, excellent extension for a shallow-mount 12. The larger Vas means the SW12 needs more enclosure volume to achieve the same Qtc as the SW10.\u003c\/p\u003e\n\n    \u003cdiv class=\"arc-enc-card\"\u003e\n      \u003cdiv class=\"arc-enc-card-head\"\u003eSW12 D4 (Parallel)  |  Qts 0.616  |  Fs 33 Hz  |  Vas 33.73 L\u003c\/div\u003e\n      \u003ctable class=\"arc-enc-table\"\u003e\n        \u003ctr\u003e\n\u003cth\u003eBox Volume\u003c\/th\u003e\n\u003cth\u003eQtc\u003c\/th\u003e\n\u003cth\u003eFc\u003c\/th\u003e\n\u003cth\u003eF3\u003c\/th\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e0.65 cu ft\u003cspan class=\"arc-char\"\u003eCompact minimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e1.037\u003c\/td\u003e\n\u003ctd\u003e55.5 Hz\u003c\/td\u003e\n\u003ctd\u003e43.0 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr class=\"arc-optimal\"\u003e\n\u003ctd\u003e0.80 cu ft ★\u003cspan class=\"arc-char\"\u003eArc Audio recommended optimum\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.972\u003c\/td\u003e\n\u003ctd\u003e52.1 Hz\u003c\/td\u003e\n\u003ctd\u003e41.5 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003ctr\u003e\n\u003ctd\u003e1.00 cu ft\u003cspan class=\"arc-char\"\u003eExtended \/ flattest response\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd\u003e0.912\u003c\/td\u003e\n\u003ctd\u003e48.8 Hz\u003c\/td\u003e\n\u003ctd\u003e40.2 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"arc-graph-wrap\"\u003e\n      \u003cp class=\"arc-graph-title\"\u003eSW12 D4 Frequency Response  |  Sealed\u003c\/p\u003e\n      \u003csvg viewbox=\"0 0 680 300\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" style=\"width:100%;height:auto;display:block;\"\u003e\n\u003crect x=\"0\" y=\"0\" width=\"680\" height=\"300\" fill=\"#18181b\"\u003e\u003c\/rect\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"270.0\" y2=\"270.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"274.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#71717a\" font-family=\"Arial, sans-serif\"\u003e-12dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"219.2\" y2=\"219.2\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"223.2\" text-anchor=\"end\" font-size=\"10\" fill=\"#71717a\" font-family=\"Arial, sans-serif\"\u003e-9dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"168.4\" y2=\"168.4\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"172.4\" text-anchor=\"end\" font-size=\"10\" fill=\"#71717a\" font-family=\"Arial, sans-serif\"\u003e-6dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"121.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#71717a\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"66.8\" y2=\"66.8\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"70.8\" text-anchor=\"end\" font-size=\"10\" fill=\"#71717a\" font-family=\"Arial, sans-serif\"\u003e0dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"16.0\" y2=\"16.0\" stroke=\"#27272a\" stroke-width=\"1\"\u003e\u003c\/line\u003e\n\u003ctext x=\"36\" y=\"20.0\" text-anchor=\"end\" font-size=\"10\" fill=\"#71717a\" font-family=\"Arial, sans-serif\"\u003e3dB\u003c\/text\u003e\n\u003cline x1=\"42\" x2=\"664\" y1=\"117.6\" y2=\"117.6\" stroke=\"#d71920\" stroke-width=\"1.4\" stroke-dasharray=\"4 3\" opacity=\"0.85\"\u003e\u003c\/line\u003e\n\u003ctext x=\"660\" y=\"112.6\" text-anchor=\"end\" font-size=\"10\" fill=\"#f04657\" font-family=\"Arial, sans-serif\"\u003e-3dB\u003c\/text\u003e\n\u003cline x1=\"42.0\" x2=\"42.0\" y1=\"16\" y2=\"270\" stroke=\"#27272a\" 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535.5,62.4 537.5,62.5 539.6,62.5 541.7,62.6 543.7,62.7 545.8,62.7 547.9,62.8 550.0,62.9 552.0,62.9 554.1,63.0 556.2,63.1 558.3,63.1 560.3,63.2 562.4,63.3 564.5,63.3 566.6,63.4 568.6,63.4 570.7,63.5 572.8,63.5 574.8,63.6 576.9,63.7 579.0,63.7 581.1,63.8 583.1,63.8 585.2,63.9 587.3,63.9 589.4,64.0 591.4,64.0 593.5,64.1 595.6,64.1 597.7,64.2 599.7,64.2 601.8,64.2 603.9,64.3 605.9,64.3 608.0,64.4 610.1,64.4 612.2,64.5 614.2,64.5 616.3,64.5 618.4,64.6 620.5,64.6 622.5,64.6 624.6,64.7 626.7,64.7 628.8,64.8 630.8,64.8 632.9,64.8 635.0,64.9 637.0,64.9 639.1,64.9 641.2,65.0 643.3,65.0 645.3,65.0 647.4,65.1 649.5,65.1 651.6,65.1 653.6,65.1 655.7,65.2 657.8,65.2 659.9,65.2 661.9,65.3 664.0,65.3\" fill=\"none\" stroke=\"#60a5fa\" stroke-width=\"1.6\" stroke-linejoin=\"round\" stroke-dasharray=\"5 3\"\u003e\u003c\/polyline\u003e\n\u003c\/svg\u003e\n      \u003cdiv class=\"arc-graph-legend\"\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#ef4444;\"\u003e\u003c\/span\u003e0.65 cu ft (Qtc 1.037)\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#4ade80;\"\u003e\u003c\/span\u003e0.80 cu ft (Qtc 0.972) ★ Arc Recommended\u003c\/span\u003e\n        \u003cspan class=\"arc-graph-legend-item\"\u003e\u003cspan class=\"arc-graph-legend-swatch\" style=\"background:#60a5fa;\"\u003e\u003c\/span\u003e1.00 cu ft (Qtc 0.912)\u003c\/span\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n\n    \u003cdiv class=\"arc-enc-note\"\u003e\n      \u003cp\u003e\u003cstrong style=\"color:#f04657 !important;\"\u003eNote on impedance:\u003c\/strong\u003e T\/S parameters are measured for the D4 variant (parallel = approximately 2 ohm load). The D2 variant will produce different sealed alignments due to differing Qts and Vas values. D2 T\/S data not included in the current Arc Audio release. \u003ca class=\"arc-enc-link\" href=\"\/pages\/sealed-box-calculator\"\u003eRun your own numbers in the Sealed Box Calculator.\u003c\/a\u003e\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-section\"\u003e\n    \u003ch3\u003eThe Matched Enclosure Is Already Built\u003c\/h3\u003e\n    \u003cp\u003eYou do not have to guess at the box. The Proline X Micro Series 12\" Sealed Enclosure, Fits Arc Audio SW12 is CNC-cut to the exact sealed targets shown above, in three net volumes (0.65, 0.8, and 1.0 cubic feet) on a shared 26 by 14.75 footprint, down-fire primary with a 4-foot kit and front-fire as a secondary option. Order it bare or loaded with the SW12 already mounted and wired. See the Enclosures tab for the matched Proline X enclosure.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"arc-d-cta\"\u003e\n    \u003ch3\u003eBig Bass, Thin Footprint\u003c\/h3\u003e\n    \u003cp\u003eThe Arc Audio SW12 is covered by Arc Audio's 1-year limited warranty through authorized dealers. Audio Intensity is an authorized Arc Audio dealer, and every order ships free to the lower 48.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Arc Audio","offers":[{"title":"Dual 4ohm","offer_id":43445490581593,"sku":"SW12D4","price":629.99,"currency_code":"USD","in_stock":true},{"title":"Dual 2ohm","offer_id":43445490614361,"sku":"SW12D2","price":629.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/arc-audio-sw12-12-inch-shallow-mount-subwoofersubwooferarc-audio-8464617.png?v=1781852227"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/collections\/shallow-mount-subwoofer-4043712.webp?v=1762009033","url":"https:\/\/audiointensity.com\/collections\/shallow-mount-subwoofer.oembed?page=2","provider":"Audio Intensity","version":"1.0","type":"link"}