Proline X
Performance Optimized Wedge Sealed 10" Audiophile Enclosure | Image Dynamics IDMAX10 V.4
SKU: PO 10-S W IDMAX
- Best For: Image Dynamics IDMAX10 V.4 Sound Quality & Audiophile Builds (Not for Compact-Cabinet SPL Installs)
- Net Volume: 1.28 cu ft (Slightly Above ID's 1.25 Audiophile Spec | 1.39 cu ft Gross | 0.11 cu ft Driver Displacement)
- Driver Match: Image Dynamics IDMAX10 V.4 D2 (Qtc ~0.77, F3 ~37 Hz) or D4 (Qtc ~0.67, F3 ~43 Hz)
- Construction: Rear-Firing Wedge | V-Groove/Dado | Perimeter Brace | 500W RMS
Financing available — choose Shop Pay Installments at checkout.
Performance Optimized Wedge Sealed 10" Audiophile Enclosure | Image Dynamics IDMAX10 V.4
Performance Optimized Wedge | Image Dynamics IDMAX10 V.4
Single 10" Sealed Wedge | Audiophile Alignment for the Image Dynamics IDMAX 10 Competition Subwoofer
The Image Dynamics IDMAX10 V.4 in an Audiophile-Tuned Sealed Cabinet
The Image Dynamics IDMAX10 V.4 is a competition-grade 10-inch subwoofer engineered for sound quality competitors and audiophile daily-driver builds. Pressed paper pulp cone with glass fiber reinforcement, aluminum neck joint for structural integrity under sustained excursion, oversized motor structure, Nomex spider suspension for thermal survival, parabolic foam surround, flat-wound high-temperature voice coil, 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 fifteen-minute rebuild rather than a lost driver. 500 watts RMS continuous power handling, 19.5mm one-way linear excursion, dual voice coil in either 2-ohm or 4-ohm configuration. The IDMAX platform is what Image Dynamics designed for buyers who care about accuracy first and output second, and it is the driver family that has been placing at IASCA and MECA sound quality events for years.
The Performance Optimized Wedge Sealed 10 for Image Dynamics IDMAX 10 is engineered to Image Dynamics' Audiophile-tier sealed alignment. 1.39 cubic feet gross internal volume minus the IDMAX10's 0.11 cubic foot total driver displacement lands at 1.28 cubic feet net. This is not the compact-cabinet alignment. This is the alignment the IDMAX platform was designed to sing in.
1.39 cubic feet gross = 1.28 cubic feet net after the IDMAX10 V.4's 0.11 cubic foot total driver displacement. Sized slightly above Image Dynamics' 1.25 cu ft Audiophile-tier sealed spec for the IDMAX10 platform. The D2 variant lands near a Butterworth alignment (Qtc ~0.77) with F3 around 37 Hz sealed. The D4 variant runs slightly overdamped (Qtc ~0.67) with F3 around 43 Hz and tighter transient response. Both alignments trade cabinet size for the extended low-end and controlled character the IDMAX platform was engineered to deliver.
Trunk-Load Wedge Design Explained
This 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, applied here to a driver that rewards the trunk-load approach with the extension and control an audiophile alignment can deliver.
Seat-Side Face Matches Seat Lean
Most factory rear seat backs lean roughly 20 degrees back from vertical. The angled face of this wedge (9.67" at the top, 14.77" at the bottom) matches that lean, tucking against the seat back with no wasted gap. The IDMAX10's 7.68" mount depth is accommodated by the top face without pushing the driver into cabin space.
Trunk-Lid-Side Face Fires the Woofer
The vertical face on the opposite side of the wedge (23.5" wide × 14" tall) is where the IDMAX10 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 a competition-grade audiophile driver.
Trunk Cavity Loading Complements Audiophile Alignment
Firing the woofer 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 — a smoother, less-localized presentation than direct-firing setups. The 1.28 cu ft net audiophile alignment complements this by delivering extended low-end that the trunk cavity translates into deep, controlled cabin response.
Larger Cabinet Than Any Other 10" PO Wedge
23.5" wide by 14" tall by 9.67-14.77" deep. Larger than the RF T1 10" wedge (20.75W x 13.5H) and every JL 10" wedge in the line. The larger footprint is not incidental — it is the price of the audiophile alignment. If you want the compact-cabinet approach, choose a different driver. If you want the IDMAX in its audiophile home, this is the cabinet it lives in.
Audiophile Alignment Explained | Why 1.28 Cubic Feet Net
Image Dynamics publishes multiple sealed alignments for the IDMAX10 platform in the V.4 series manual — a compact alignment (roughly 0.75 cu ft) for maximum power handling in constrained installs, a universal alignment (roughly 1.0 cu ft) for balanced performance, and the audiophile alignment (roughly 1.25 cu ft) for maximum extension and lowest Qtc. Each alignment produces a different acoustic character with different power handling ceilings and different F3 targets. The Performance Optimized Wedge Sealed 10 is engineered to the audiophile alignment.
Predicted Alignment at 1.28 Cubic Feet Net
Using Image Dynamics' published Thiele-Small parameters for the IDMAX10 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:
| Variant | Qts | Vas | Qtc @ 1.28 ft³ | Fc | F3 | Character |
|---|---|---|---|---|---|---|
| IDMAX10 V.4 D2 | 0.50 | 49.44 L | 0.77 | 40 Hz | ~37 Hz | Butterworth-adjacent, deepest extension |
| IDMAX10 V.4 D4 | 0.44 | 48.35 L | 0.67 | 41 Hz | ~43 Hz | Overdamped, tightest transient response |
Both alignments are legitimately audiophile. The D2 sits near classic Butterworth (Qtc 0.707) with a slight lift and the deepest F3 available from a 10" driver in a sealed cabinet. The D4 sits below Butterworth for a smoother, more damped rolloff that pairs well with sound-quality competition scoring that rewards transient accuracy. Neither alignment is the punchy midbass-lift character produced by compact cabinets — the IDMAX10 in a compact alignment is a different animal entirely. This cabinet is engineered for the audiophile side of the driver's capabilities.
What Audiophile Alignment Trades Against
The extended low-end and controlled Qtc come with real trade-offs worth understanding before you order. Cabinet size is significantly larger than a compact 10" enclosure — 23.5" wide, 14" tall, taking up meaningful trunk space. Power handling in a larger cabinet is lower than in a compact alignment because reduced air-spring loading allows greater cone excursion at the same input power — plan for 400-500 watts RMS input rather than pushing the driver's 500W thermal limit continuously. Efficiency is slightly lower — cabin gain and vehicle acoustics matter more when the cabinet does not add its own peak. The audiophile alignment is the right answer when accuracy and extension matter more than compact fitment or maximum output. It is the wrong answer when you need a punchy midbass-forward SPL box in a small space.
D2 vs D4 Selection
The D2 wired in parallel presents a 1-ohm load — pair it with a modern class D monoblock stable at 1 ohm delivering 400-500 watts RMS. The D4 wired in parallel presents a 2-ohm load — pair it with a class D monoblock delivering 400-500 watts RMS at 2 ohms. Both variants fit this cabinet identically since the physical dimensions and displacement are the same across the DVC configurations.
Mounting Geometry and Driver Fitment
The vertical trunk-lid-side baffle is cut to the IDMAX10 V.4's exact 9.65" cutout specification. The IDMAX10's 7.68" mounting depth fits inside the cabinet with proper clearance — internal depth from the vertical baffle to the interior of the angled seat-side face ranges from approximately 8.7" at the top baffle edge to 13.27" at the bottom (after accounting for 3/4" MDF panel thickness), with the driver's mounting position at cabinet center providing over 11.4" of clearance behind the motor. Comfortable room for the IDMAX10's oversized motor structure and heavy backplate.
Performance Series Construction, Built for Sustained IDMAX Operation
Langboard Elite MDF
Premium 3/4" MDF panels milled to documented spec — denser and more dimensionally stable than commodity MDF. Panel resonance at the low frequencies the IDMAX10 audiophile alignment reaches would color the character of a driver chosen specifically for accuracy. Langboard's density stops the panels from adding their own signature to the driver's output.
V-Groove and Dado Joinery
CNC-cut V-grooves at every panel intersection let the wedge cabinet 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 at joints, no compromise on structural integrity under sustained low-frequency loading.
Internal Bracing
Perimeter cross-brace between the two large opposing faces adds panel stiffness at the wall spans most likely to flex under IDMAX-level cone motion. Standard on this cabinet as delivered.
Pre-Wired Terminal Cup
Proline X ABS/carbon fiber composite terminal cup, pre-wired with 12-gauge OFC inside the cabinet, with stainless steel hardware accepting both spade and banana terminations on the input side. Handles the IDMAX10's 500W RMS power delivery.
Every 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 1.28 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.
Customize Your Build
Carpet Finish
Dark Gray Trunkliner is the standard durable wrap, matched to most factory trunk and cargo-area carpet tones. Plush Black (+$10) is a deeper, more luxurious nap that pairs well with blacked-out interiors and show builds.
Acrylic Insert Color
Choose Black, Blue, Red, or White 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.
Enclosure Only
This listing is for the enclosure only. Drop in your existing Image Dynamics IDMAX10 V.4 D2 (Dual 2-ohm) or IDMAX10 V.4 D4 (Dual 4-ohm) subwoofer — the cabinet fits both variants identically. Source your driver from Image Dynamics or an authorized ID dealer.
Wiring the Image Dynamics IDMAX10 V.4 to Your Amplifier
The IDMAX10 V.4 is a dual-voice-coil driver available in two impedance configurations. The pre-wired terminal cup accepts the two-conductor connection via 12-gauge OFC, with stainless steel input hardware accepting both spade and banana terminations.
IDMAX10 V.4 D2 (Dual 2-ohm): Parallel wiring presents a 1-ohm load — ideal for modern class D monoblocks stable at 1 ohm delivering 400-500 watts RMS at that impedance. Series wiring presents 4 ohms if your amplifier is not 1-ohm stable, or in dual-driver installs where paralleling two series-wired drivers at the amp returns to 2 ohms total.
IDMAX10 V.4 D4 (Dual 4-ohm): Parallel wiring presents a 2-ohm load — compatible with essentially all class D monoblocks. Series wiring presents 8 ohms for amplifiers that prefer higher impedance loads. The D4 is generally the easier match for standard mainstream amplifiers.
The IDMAX10 is rated for 500 watts RMS continuous. In the audiophile 1.28 cu ft alignment, the reduced air-spring loading means the driver reaches its mechanical excursion limit before its thermal limit — plan for 400-500 watts RMS input from a well-regulated class D monoblock rather than pushing continuous operation at or above the thermal rating. 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.
Built in Tennessee, Backed by Audio Intensity
Every 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 2 to 5 business day assembly window before the box ships. No pre-built inventory sitting in warehouses, warping in storage. Each unit is built to order.
Backed by a 1-year limited warranty against structural failure and hardware defects on the enclosure. Your Image Dynamics IDMAX10 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? Contact us — 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.
The IDMAX10 in Its Audiophile Home
1.28 cubic feet net — just above Image Dynamics' 1.25 cu ft audiophile-tier sealed alignment for the IDMAX10 V.4 platform. Butterworth-adjacent extension on the D2, controlled overdamped alignment on the D4, both trading cabinet size for the extended low-end and accuracy the IDMAX platform was engineered to deliver. Competition-grade construction, built to order in Tennessee.
| Enclosure Type | Sealed | Wedge Geometry | Rear-Firing Trunk-Load | Audiophile Alignment |
| Driver-Specific Fitment | Image Dynamics IDMAX10 V.4 D2 (DVC 2Ω) or D4 (DVC 4Ω) |
| Internal Volume (Gross) | 1.39 Cubic Feet |
| Internal Volume (Net After Displacement) | 1.28 Cubic Feet (Slightly Above ID's 1.25 Audiophile Spec) |
| Predicted Qtc (D2) | ~0.77 (Butterworth-Adjacent | F3 ~37 Hz) |
| Predicted Qtc (D4) | ~0.67 (Overdamped | F3 ~43 Hz) |
| Driver Displacement | 0.11 Cubic Feet (ID Published Spec) |
| Baffle Configuration | Vertical Trunk-Lid-Side Woofer Mounting Face |
| Material | Langboard Elite 3/4" MDF |
| Front Baffle Construction | Double-Layer 1.5" MDF (Two 3/4" Sheets Bonded) |
| Joinery | V-Groove and Dado (CNC-Cut) |
| Construction | ShopSabre CNC / Angled Seat-Side Compound Cuts / Perimeter Cross-Brace |
| External Width | 23.5 Inches |
| External Height | 14 Inches |
| External Depth (Top) | 9.67 Inches |
| External Depth (Bottom) | 14.77 Inches |
| Baffle Angle | ~20° From Vertical (Seat-Side Face) |
| Mounting Hole Diameter | 9.65 Inches |
| Mounting Hardware | 8/32 Threaded Inserts | Stainless Steel Machine Screws Included |
| Terminal Cup | Proline X ABS/Carbon Fiber Composite | 12g OFC Pre-Wired |
| Damping | Polyfill Pre-Installed |
| Recommended Power | 400-500 Watts RMS (ID Rated: 500W RMS Continuous) |
| Carpet Finish | Dark Gray Trunkliner (Standard) or Plush Black (+$10) |
| Acrylic Insert | Black, Blue, Red, White, or None (-$40) |
| Bundle Options | Enclosure Only (Bring Your Own IDMAX10 V.4 D2 or D4) |
| Warranty | 1-Year Limited (Enclosure) |
| Manufactured | Tullahoma, Tennessee, USA |
Built From a Spec Sheet, Not a Sales Sheet
Every Proline X Performance Series enclosure is CNC-cut from Langboard Elite MDF, 3/4" (18mm) panels produced to published mill specifications. Most enclosure manufacturers source generic MDF without published data. We can tell you the internal bond rating, the modulus of elasticity, the modulus of rupture, and the face and edge screw holding strength for every panel in this enclosure, because we chose the material based on those numbers, not on price or availability.
Langboard Elite is produced in the United States. The specifications below are pulled directly from Langboard's published mill data and are verifiable. This is the same panel stock used in our full Proline X lineup.
Langboard Elite MDF: Published Mill Data
| Property | Value | Why It Matters |
|---|---|---|
| Panel Stock | Langboard Elite MDF | Named, verifiable panel source, not generic "high-density MDF" |
| Thickness | 3/4" (18mm) | Industry standard for subwoofer enclosures; panels below this flex under pressure |
| Density | 48.5 lbs/ft³ | Higher density = less porosity, better screw retention, reduced resonance |
| Internal Bond | 200 psi | Measures resistance to delamination under sustained internal pressure. The most enclosure-relevant spec on this sheet |
| Modulus of Rupture (MOR) | 4,200 psi | Bending strength before the panel breaks, relevant for larger unsupported baffle spans |
| Modulus of Elasticity (MOE) | 410,000 psi | Stiffness under load; higher MOE means less panel flex under bass pressure, less resonance |
| Face Screw Holding | 325 lbs | How firmly the panel surface holds a screw; critical for baffle joint integrity over time |
| Edge Screw Holding | 250 lbs | Panel edge retention, relevant for every joint that isn't face-to-face |
200 psi: The Number That Actually Matters for Enclosures
The internal bond rating measures how well the MDF panel resists delamination under sustained pressure applied perpendicular to the face. In a subwoofer enclosure, every bass transient generates a pressure pulse that pushes outward on every panel simultaneously. A panel that begins to delaminate internally loses stiffness gradually. The symptoms are slow: a box that starts to sound softer, less defined, less punchy over months of use. 200 psi internal bond is the spec that determines how long this enclosure holds its acoustic integrity under daily use at real power levels.
410,000 psi MOE: Less Flex, Less Resonance
The modulus of elasticity measures panel stiffness, its resistance to bending under load. A stiffer panel flexes less under the pressure generated by a high-excursion driver at volume. Panel flex is a source of acoustic coloration: the panel itself begins to radiate sound at its own resonant frequency, adding distortion to the output. 410,000 psi stiffness combined with V-groove and dado joinery means the panels stay rigid and the bracing controls resonance at the structure level, not the panel level. The bass you hear comes from the driver, not the box.
325 lb Face / 250 lb Edge: Joints That Stay Locked
Screw holding strength determines how firmly the panel grips a fastener at the face and at the edge. This matters most at the baffle joint, where the front panel meets the side panels and where the driver is mounted. A panel with low screw holding strength allows fasteners to loosen over time under vibration, leading to air gaps at the joint and loss of acoustic seal. 325 lb face screw holding strength means the baffle hardware stays put. Combined with dado joinery and adhesive, the front panel on a Proline X Performance Series enclosure is not going anywhere.
Named Panel Stock: Not "Premium MDF"
The phrase "premium MDF" or "high-density MDF" appears on marketing copy for enclosures across every price point, from $40 to $400. It is not a specification. It is a description with no defined standard. Langboard Elite is a named, sourced, mill-documented product with published data. We name it in our copy because naming it holds us accountable to the spec. You can look up Langboard Elite independently, verify the numbers on this page, and confirm you are getting what we say you are getting. That is the point.
Why Proline X?
Most enclosures are built to a price point. Proline X is built to a spec. Every box starts with published-data MDF, gets CNC-cut to exact internal volume, and is assembled by hand in our Tennessee facility. The difference shows up in the measurements — and in how the box holds up two years into daily use.
CNC-Cut to Spec
Panels are machine-cut on ShopSabre CNC routers and joined with V-groove and dado joinery. Consistent geometry, no hand-cut variance, no gaps at the joints.
Handcrafted in USA
Hand-assembled at our facility in Tullahoma, TN. Every enclosure is inspected before it ships.
Tuned to the Build
Internal volume and port geometry are calculated to spec and CNC-cut to exact dimensions. The box performs the same way every time.
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