{"product_id":"performance-optimized-wedge-sealed-15-audiophile-enclosure-image-dynamics-idmax15-v-4","title":"Performance Optimized Wedge Sealed 15\" Audiophile Enclosure | Image Dynamics IDMAX15 V.4","description":"\u003cstyle\u003e\n  .po-wrap { font-family: 'Helvetica Neue', Arial, sans-serif; line-height: 1.8; color: #1e293b; max-width: 1200px; margin: 0 auto; background: #ffffff; }\n  .po-hero { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-hero .po-title { font-size: 2.6em; font-weight: 800; text-transform: uppercase; letter-spacing: 2px; margin: 0 0 10px 0; color: white; }\n  .po-hero .po-subtitle { font-size: 1.2em; font-weight: 300; opacity: 0.9; margin: 0 0 30px 0; }\n  .po-badges { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; margin-top: 20px; }\n  .po-badge { background: rgba(6, 182, 212, 0.2); border: 1px solid #06b6d4; color: #67e8f9; padding: 8px 20px; border-radius: 20px; font-size: 0.9em; font-weight: 600; letter-spacing: 0.5px; }\n  .po-section { padding: 50px 40px; border-bottom: 1px solid #e2e8f0; background: #ffffff; }\n  .po-section:nth-child(even) { background: #f0f9ff; }\n  .po-section h2 { color: #0e7490; font-size: 2em; font-weight: 700; margin: 0 0 20px 0; padding-bottom: 12px; border-bottom: 3px solid #06b6d4; }\n  .po-section h3 { color: #0f172a; font-size: 1.4em; font-weight: 600; margin: 30px 0 15px 0; }\n  .po-section p { font-size: 1.05em; color: #334155; margin-bottom: 18px; }\n  .po-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin: 30px 0; }\n  .po-card { background: #ffffff; border: 1px solid #e2e8f0; border-top: 4px solid #06b6d4; padding: 25px; border-radius: 4px; }\n  .po-card h4 { color: #0e7490; font-size: 1.15em; font-weight: 700; margin: 0 0 12px 0; text-transform: uppercase; letter-spacing: 1px; }\n  .po-card p { font-size: 0.98em; color: #475569; margin: 0; }\n  .po-highlight { background: #f0f9ff; border-left: 4px solid #06b6d4; padding: 25px 30px; margin: 30px 0; border-radius: 4px; }\n  .po-highlight p { color: #1e293b; margin: 0; font-size: 1.05em; }\n  .po-alignment-table { width: 100%; border-collapse: collapse; margin: 20px 0; background: #ffffff; }\n  .po-alignment-table th { background: #0e7490; color: white; padding: 12px; text-align: left; font-weight: 600; font-size: 0.95em; }\n  .po-alignment-table td { padding: 12px; border-bottom: 1px solid #e2e8f0; font-size: 0.98em; color: #334155; }\n  .po-alignment-table tr.po-highlight-row { background: #f0f9ff; }\n  .po-alignment-table tr.po-highlight-row td { font-weight: 600; color: #0e7490; }\n  .po-cta { background: linear-gradient(135deg, #0f172a 0%, #0e7490 100%); padding: 60px 40px; text-align: center; color: white; }\n  .po-cta h2 { font-size: 2.2em; font-weight: 700; margin: 0 0 20px 0; color: white; border: none; padding: 0; }\n  .po-cta p { font-size: 1.15em; opacity: 0.92; max-width: 800px; margin: 0 auto 20px auto; color: white; }\n  @media (max-width: 768px) {\n    .po-hero { padding: 40px 20px; }\n    .po-hero .po-title { font-size: 1.8em; }\n    .po-section { padding: 30px 20px; }\n    .po-section h2 { font-size: 1.6em; }\n    .po-grid { grid-template-columns: 1fr; }\n    .po-cta { padding: 40px 20px; }\n    .po-cta h2 { font-size: 1.6em; }\n    .po-alignment-table { font-size: 0.85em; }\n    .po-alignment-table th, .po-alignment-table td { padding: 8px 6px; }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"po-wrap\"\u003e\n\n  \u003cdiv class=\"po-hero\"\u003e\n    \u003cp class=\"po-title\"\u003ePerformance Optimized Wedge | Image Dynamics IDMAX15 V.4\u003c\/p\u003e\n    \u003cp class=\"po-subtitle\"\u003eSingle 15\" Sealed Wedge | Audiophile Alignment for the Image Dynamics IDMAX 15 Competition Subwoofer\u003c\/p\u003e\n    \u003cdiv class=\"po-badges\"\u003e\n      \u003cspan class=\"po-badge\"\u003e3.26 ft³ Gross\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e3.00 ft³ Net (Audiophile)\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eRear-Firing Wedge\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003e30.6\" × 18\" × 11.92\/18.47\"\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eV-Groove \/ Dado\u003c\/span\u003e\n      \u003cspan class=\"po-badge\"\u003eBuilt in Tennessee\u003c\/span\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eThe Image Dynamics IDMAX15 V.4 in an Audiophile-Tuned Sealed Cabinet\u003c\/h2\u003e\n    \u003cp\u003eThe Image Dynamics IDMAX15 V.4 is the largest driver in Image Dynamics' three-size IDMAX platform and the flagship of Image Dynamics' competition-grade lineup. Glass fiber reinforced pressed paper pulp cone, aluminum neck joint for structural integrity under sustained excursion, 575-ounce oversized motor structure, 60mm BASV voice coil former, Nomex spider suspension for thermal survival, parabolic EPDM rubber surround, American-made flat-wound extended voice coil, 2.5-inch voice coil diameter, heavy-duty cast aluminum frame, and Image Dynamics' bolt-on field-replaceable cone assembly (16 screws, no glue, alignment shims included) that turns a blown cone into a rebuild rather than a lost driver. 600 watts RMS continuous power handling, 1200 watts peak, 22mm one-way linear excursion, 934.79 cm² of piston area, dual voice coil in either 2-ohm or 4-ohm configuration. The IDMAX15 is the driver competitors run when the vehicle is large enough to accommodate a serious cabinet and the goal is maximum output paired with the IDMAX platform's SQ-scoring reputation.\u003c\/p\u003e\n    \u003cp\u003eThe Performance Optimized Wedge Sealed 15 for Image Dynamics IDMAX 15 is engineered to Image Dynamics' Audiophile-tier sealed alignment. 3.26 cubic feet gross internal volume minus the IDMAX15's 0.26 cubic foot total driver displacement lands at exactly 3.00 cubic feet net — direct match to Image Dynamics' published Audiophile sealed spec of 3.0 cu ft for the IDMAX15 platform. This is a serious cabinet for a serious driver. Not a compact-alignment shortcut.\u003c\/p\u003e\n    \u003cdiv class=\"po-highlight\"\u003e\n      \u003cp\u003e3.26 cubic feet gross = 3.00 cubic feet net after the IDMAX15 V.4's 0.26 cubic foot total driver displacement. Exact match to Image Dynamics' Audiophile-tier sealed spec of 3.0 cu ft. The D2 variant lands essentially at Butterworth (Qtc ~0.72) with F3 near 44 Hz sealed. The D4 variant runs with a slight lift (Qtc ~0.76) with F3 near 42 Hz. Note that the IDMAX15 reaches shallower F3 sealed than the smaller IDMAX 10 and 12 in their respective Audiophile alignments — that is a consequence of the IDMAX15's higher 30 Hz Fs. For deep sealed extension the smaller IDMAX drivers actually reach lower F3. The IDMAX15 delivers maximum output and cone area sealed; deep F3 extension is the province of the ported Audiophile alignment (4.0 cu ft, F3 27 Hz).\u003c\/p\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eTrunk-Load Wedge Design Explained\u003c\/h2\u003e\n    \u003cp\u003eThis wedge is not a front-firing enclosure. The woofer is mounted on the vertical face that sits at the back of the box, closest to the trunk lid, and fires rearward into the trunk cavity. The angled face is on the opposite side of the box — the side that faces the front of the vehicle — and tucks against the rear seat back. Two different problems solved by one geometry, scaled here for the largest driver in the IDMAX platform and the largest cabinet in the Performance Optimized Wedge line.\u003c\/p\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eSeat-Side Face Matches Seat Lean\u003c\/h4\u003e\n        \u003cp\u003eMost factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (11.92\" at the top, 18.47\" at the bottom) matches that lean, tucking against the seat back with no wasted gap. The IDMAX15's 10.40\" mount depth is accommodated by the top face without pushing the driver into cabin space.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk-Lid-Side Face Fires the Woofer\u003c\/h4\u003e\n        \u003cp\u003eThe vertical face on the opposite side of the wedge (30.6\" wide × 18\" tall) is where the IDMAX15 mounts. The driver fires rearward toward the trunk lid, using the trunk cavity as an acoustic loading chamber. Classic SQ trunk-load pattern applied to the largest competition-grade audiophile driver Image Dynamics makes.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eTrunk Cavity Loading at IDMAX15 Scale\u003c\/h4\u003e\n        \u003cp\u003eFiring the IDMAX15's 934 cm² of cone area into the trunk cavity uses the trunk itself as an extension of the acoustic system. Low frequencies transmit into the passenger cabin through the rear deck, seat back, and cabin boundaries with the smoother, less-localized presentation trunk-load provides. The 3.0 cu ft audiophile alignment complements this with maximum output capability paired with musical Butterworth-adjacent character.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLargest Cabinet in the Entire PO Wedge Line\u003c\/h4\u003e\n        \u003cp\u003e30.6\" wide by 18\" tall by 11.92-18.47\" deep. This is by measurable margin the largest cabinet in the Performance Optimized Wedge line — wider, taller, and deeper than the RF T1D215 15\" wedge and the P3D2-15 15\" wedge. If your vehicle cannot accommodate approximately 31\" of usable width and 19\" of usable trunk-floor depth, this is not your build. Confirm trunk clearance before ordering.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eAudiophile Alignment Explained | Why 3.0 Cubic Feet Net\u003c\/h2\u003e\n    \u003cp\u003eImage Dynamics publishes three sealed alignments for the IDMAX15 platform in the V.4 series manual — a Compact alignment (approximately 1.5 cu ft) for maximum power handling in constrained installs, a Universal alignment (approximately 2.0 cu ft) for balanced performance, and the Audiophile alignment (3.0 cu ft) for maximum extension and lowest Qtc in a sealed cabinet. Each alignment produces a different acoustic character with different power handling ceilings and different F3 targets. The Performance Optimized Wedge Sealed 15 is engineered to the Audiophile sealed alignment exactly.\u003c\/p\u003e\n    \u003ch3\u003ePredicted Alignment at 3.00 Cubic Feet Net\u003c\/h3\u003e\n    \u003cp\u003eUsing Image Dynamics' published Thiele-Small parameters for the IDMAX15 V.4, calculated using the same formulas as the Audio Intensity Sealed Box Calculator, here is what the Audiophile alignment produces for each impedance variant:\u003c\/p\u003e\n    \u003ctable class=\"po-alignment-table\"\u003e\n      \u003cthead\u003e\n        \u003ctr\u003e\n          \u003cth\u003eVariant\u003c\/th\u003e\n          \u003cth\u003eQts\u003c\/th\u003e\n          \u003cth\u003eVas\u003c\/th\u003e\n          \u003cth\u003eQtc @ 3.00 ft³\u003c\/th\u003e\n          \u003cth\u003eFc\u003c\/th\u003e\n          \u003cth\u003eF3\u003c\/th\u003e\n          \u003cth\u003eCharacter\u003c\/th\u003e\n        \u003c\/tr\u003e\n      \u003c\/thead\u003e\n      \u003ctbody\u003e\n        \u003ctr class=\"po-highlight-row\"\u003e\n          \u003ctd\u003eIDMAX15 V.4 D2\u003c\/td\u003e\n          \u003ctd\u003e0.48\u003c\/td\u003e\n          \u003ctd\u003e104.03 L\u003c\/td\u003e\n          \u003ctd\u003e0.72\u003c\/td\u003e\n          \u003ctd\u003e45 Hz\u003c\/td\u003e\n          \u003ctd\u003e~44 Hz\u003c\/td\u003e\n          \u003ctd\u003eEssentially Butterworth, controlled\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n          \u003ctd\u003eIDMAX15 V.4 D4\u003c\/td\u003e\n          \u003ctd\u003e0.50\u003c\/td\u003e\n          \u003ctd\u003e109.03 L\u003c\/td\u003e\n          \u003ctd\u003e0.76\u003c\/td\u003e\n          \u003ctd\u003e45 Hz\u003c\/td\u003e\n          \u003ctd\u003e~42 Hz\u003c\/td\u003e\n          \u003ctd\u003eSlight lift, warmer, marginally deeper F3\u003c\/td\u003e\n        \u003c\/tr\u003e\n      \u003c\/tbody\u003e\n    \u003c\/table\u003e\n    \u003cp\u003eBoth alignments sit close to classic Butterworth (Qtc 0.707). The D2 produces the flattest, most controlled response the IDMAX15 can deliver in a sealed cabinet. The D4 produces a marginally warmer character with the slight upper-bass lift Qts 0.50 provides at this alignment. Neither variant produces the punchy midbass-forward character of a compact sealed alignment or the deep tuned extension of a properly ported cabinet. What this sealed Audiophile alignment delivers is transient accuracy, musical control, and maximum output capability from the IDMAX platform in a sealed enclosure. The character has kept the IDMAX15 competitive in IASCA and MECA sound quality events for over a decade.\u003c\/p\u003e\n    \u003ch3\u003eSealed vs Ported for the IDMAX15\u003c\/h3\u003e\n    \u003cp\u003eAn important honest note on the IDMAX15 specifically: because the driver has a relatively high 30 Hz Fs (versus 27 Hz on the IDMAX10 and 26 Hz on the IDMAX12), sealed F3 stays in the low-to-mid 40s even at the Audiophile 3.0 cu ft alignment. The smaller IDMAX drivers actually reach deeper F3 sealed than the 15. For deep extension below 30 Hz, the IDMAX15 wants a ported alignment — specifically Image Dynamics' Audiophile ported spec of 4.0 cu ft tuned to 27 Hz, which reaches F3 at 27 Hz. That is the configuration that wins IASCA and MECA points on deep-bass-scored tracks. This sealed cabinet is the right answer for musical accuracy, transient control, cabinet manageability compared to a 4.0 cu ft ported enclosure, and installations where the driver's output paired with sealed's control matters more than reaching F3 in the 20s.\u003c\/p\u003e\n    \u003ch3\u003eD2 vs D4 Selection\u003c\/h3\u003e\n    \u003cp\u003eThe IDMAX15 D2 and D4 have very similar Qts values (0.48 vs 0.50), producing nearly identical Qtc alignments in this cabinet. The character difference is subtle — much more subtle than the D2\/D4 differences on the IDMAX12 or IDMAX10. For the IDMAX15, the primary D2\/D4 selection driver is impedance compatibility with your amplifier rather than character preference. Read the D2 impedance warning in the wiring section carefully before choosing the D2.\u003c\/p\u003e\n    \u003ch3\u003eMounting Geometry and Driver Fitment\u003c\/h3\u003e\n    \u003cp\u003eThe vertical trunk-lid-side baffle is cut to the IDMAX15 V.4's exact 14.80\" cutout specification. The IDMAX15's 10.40\" mounting depth is the deepest of any driver in the Performance Optimized Wedge line. Internal cabinet clearance behind the driver at cabinet center is approximately 4.05 inches (measured from the vertical baffle interior to the interior of the angled seat-side face at driver-center height, after accounting for 3\/4\" MDF panel thickness). Adequate room for the IDMAX15's 575-ounce motor structure and 60mm voice coil former assembly.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003ePerformance Series Construction, Built for IDMAX15-Scale Operation\u003c\/h2\u003e\n    \u003cdiv class=\"po-grid\"\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eLangboard Elite MDF\u003c\/h4\u003e\n        \u003cp\u003ePremium 3\/4\" MDF panels milled to documented spec. At the low frequencies and high cone motion the IDMAX15 audiophile alignment produces, panel resonance would color a driver chosen specifically for accuracy. Langboard's density and dimensional stability stop the cabinet from adding its own signature to what the driver delivers.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eV-Groove and Dado Joinery\u003c\/h4\u003e\n        \u003cp\u003eCNC-cut V-grooves at every panel intersection let the wedge fold into its angled shape with maximum glue surface. Dado joints lock the vertical woofer baffle and the angled seat-side panel into the side walls. No fasteners visible from outside, no exposed end grain, no compromise on structural integrity under sustained IDMAX-scale cone motion.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003eHeavy Internal Bracing at 30.6\" Baffle Span\u003c\/h4\u003e\n        \u003cp\u003eThe 30.6\" wide baffle span requires substantial internal cross-bracing to prevent flex under IDMAX15-scale cone motion. Dual perimeter cross-braces tie the vertical baffle to the angled seat-side panel at the third-points of the baffle height. Standard on this cabinet as delivered.\u003c\/p\u003e\n      \u003c\/div\u003e\n      \u003cdiv class=\"po-card\"\u003e\n        \u003ch4\u003ePre-Wired Terminal Cup, Uprated Gauge\u003c\/h4\u003e\n        \u003cp\u003eProline X ABS\/carbon fiber composite terminal cup, pre-wired with 10-gauge OFC inside the cabinet (upgraded from the standard 12-gauge on smaller PO Wedge builds to handle the IDMAX15's higher current draw), with stainless steel hardware accepting both spade and banana terminations on the input side. Handles the IDMAX15's 600W RMS continuous power delivery with headroom.\u003c\/p\u003e\n      \u003c\/div\u003e\n    \u003c\/div\u003e\n    \u003cp\u003eEvery panel is cut on ShopSabre CNC routers in our Tullahoma, TN facility. The angled seat-side panel requires precise CNC compound cuts to hit both the 3.0 cu ft net Audiophile alignment target and the mating angles between the top and bottom edges. Internal volume is verified on every unit to ensure the Audiophile alignment target is achieved.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWeight and Installation Notes\u003c\/h2\u003e\n    \u003cp\u003eThis cabinet is genuinely heavy. The IDMAX15 driver itself is 44 pounds. The empty cabinet weighs approximately 65 pounds in Langboard MDF at this size. Loaded system weight is approximately 109 pounds. This is a two-person install. Standard parcel shipping via UPS ground is typically capped at 150 pounds per package but oversize surcharges apply — expect either freight shipping or heavy-parcel handling depending on your delivery location. Confirm your vehicle's trunk load capacity and the physical clearance to get the loaded cabinet through the trunk opening before ordering.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eCustomize Your Build\u003c\/h2\u003e\n    \u003ch3\u003eCarpet Finish\u003c\/h3\u003e\n    \u003cp\u003e\u003cstrong\u003eDark Gray Trunkliner\u003c\/strong\u003e is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. \u003cstrong\u003ePlush Black\u003c\/strong\u003e (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.\u003c\/p\u003e\n    \u003ch3\u003eAcrylic Insert Color\u003c\/h3\u003e\n    \u003cp\u003eChoose \u003cstrong\u003eBlack, Blue, Red, or White\u003c\/strong\u003e for the baffle insert to match your build. Or skip the insert entirely (-$40) for a clean, understated look. The insert is purely cosmetic — performance is identical across colors.\u003c\/p\u003e\n    \u003ch3\u003eEnclosure Only\u003c\/h3\u003e\n    \u003cp\u003eThis listing is for the enclosure only. Drop in your existing Image Dynamics IDMAX15 V.4 D2 (Dual 2-ohm) or IDMAX15 V.4 D4 (Dual 4-ohm) subwoofer — the cabinet fits both variants identically. Source your driver from Image Dynamics or an authorized ID dealer.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eWiring the Image Dynamics IDMAX15 V.4 to Your Amplifier\u003c\/h2\u003e\n    \u003cp\u003eThe IDMAX15 V.4 is a dual-voice-coil driver available in two impedance configurations. The pre-wired terminal cup accepts the two-conductor connection via 10-gauge OFC, with stainless steel input hardware accepting both spade and banana terminations.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eIDMAX15 V.4 D2 (Dual 2-ohm) — Read Before Wiring:\u003c\/strong\u003e The IDMAX15 D2 has DC resistance of 1.4 ohms per coil. Wired in parallel, the combined DC-measured load is approximately 0.7 ohms — meaningfully below the 1-ohm stable rating of nearly all modern class D monoblocks. This is not the 0.83-ohm parallel measurement on the IDMAX12 D2 that some amps tolerate; the IDMAX15 D2 parallel is a hard \"no\" for most amplifiers and will trigger protection modes on many designs marketed as 1-ohm stable. Wire the D2 in series for a 4-ohm load unless your amplifier is explicitly rated for sub-1-ohm operation and specifies minimum impedance below 1 ohm in the actual specification sheet (not the marketing materials). Series wiring at 4 ohms is compatible with essentially all high-quality class D monoblocks.\u003c\/p\u003e\n    \u003cp\u003e\u003cstrong\u003eIDMAX15 V.4 D4 (Dual 4-ohm):\u003c\/strong\u003e Parallel wiring presents a 2-ohm load — compatible with all 1-ohm stable class D monoblocks operating at 2 ohms. Series wiring presents 8 ohms. The D4 is the easier match for standard mainstream amplifiers, especially given the D2's problematic parallel measured impedance. Given the very similar Qtc alignments the D2 and D4 produce in this cabinet, the D4 is often the practical choice unless you have a specific amplifier rated for sub-1-ohm operation and want the D2's slightly deeper F3 in parallel.\u003c\/p\u003e\n    \u003cp\u003eThe IDMAX15 is rated for 600 watts RMS continuous with 1200 watts peak. In the Audiophile 3.0 cu ft alignment, reduced air-spring loading allows greater cone excursion at the same input power compared to a compact-cabinet alignment — plan for 500-800 watts RMS input from a well-regulated class D monoblock. The Rockford Fosgate T1000-1bdCP (1000W at 1 ohm) is the factory-scale amplifier match at 2 ohms with the D4 or 4 ohms with the D2 in series. Set your amplifier's active low-pass filter between 70 and 90 Hz for musical accuracy in a full-range system. Subsonic filter around 20-25 Hz to protect the mechanical suspension at frequencies well below the alignment's Fc.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-section\"\u003e\n    \u003ch2\u003eBuilt in Tennessee, Backed by Audio Intensity\u003c\/h2\u003e\n    \u003cp\u003eEvery Performance Optimized enclosure is CNC-cut, assembled, and finished in our Tullahoma, TN facility. Components are pulled from inventory after your order is placed, then bonded and wrapped — a 3 to 7 business day assembly window before this cabinet ships (longer than the smaller PO Wedge builds due to the additional MDF panels, bracing, and finish surface area). No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.\u003c\/p\u003e\n    \u003cp\u003eBacked by a 1-year limited warranty against structural failure and hardware defects on the enclosure. Your Image Dynamics IDMAX15 V.4 subwoofer is covered by Image Dynamics' 1-year manufacturer warranty when purchased through an authorized ID dealer. Questions on fitment, wiring, or amplifier pairing? \u003ca href=\"\/pages\/contact-us\"\u003eContact us\u003c\/a\u003e — we install this gear ourselves, in our own vehicles, and Audio Intensity's owner has judged IASCA National and MECA World SQ competitions since 2019.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"po-cta\"\u003e\n    \u003ch2\u003eThe IDMAX15 in Its Sealed Audiophile Home\u003c\/h2\u003e\n    \u003cp\u003e3.0 cubic feet net — Image Dynamics' Audiophile-tier sealed alignment for the IDMAX15 V.4, delivered exactly. Essentially Butterworth on the D2, slight lift on the D4, both reaching F3 in the low 40s sealed with the maximum output capability the IDMAX platform delivers. The largest cabinet in the Performance Optimized Wedge line, engineered for the largest driver Image Dynamics makes. Competition-grade construction, built to order in Tennessee.\u003c\/p\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e","brand":"Proline X","offers":[{"title":"Default Title","offer_id":44529788846169,"sku":"PO 15-S W IDMAX","price":429.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0689\/1389\/files\/PO12-SWIDMAXFront_a2591727-3e3e-458a-95cd-f14e19636250.png?v=1786847908","url":"https:\/\/audiointensity.com\/products\/performance-optimized-wedge-sealed-15-audiophile-enclosure-image-dynamics-idmax15-v-4","provider":"Audio Intensity","version":"1.0","type":"link"}