Proline X PO 10D-S W TW3 sealed wedge enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Performance Optimized · Datasheet

Performance Optimized Wedge Sealed Dual 10" Enclosure | JL Audio 10TW3 Dual 10" Sealed enclosure

Net volume
1.000 cu ft total, 0.500 per driver
Max mounting depth
3.268 in required
Cutout
9.6060 in
External dimensions
32.00 in W × 15 in at the seat face H × 10.35 in at the base D
Front baffle
1.5 in, double baffle
Buy at Audio Intensity
  • Best For: Dual JL Audio 10TW3 Trunk-Fit Builds
  • Net Volume: 0.500 cu ft per driver (0.53 cu ft Gross)
  • Alignment: Qtc 0.960, fc 50.0 Hz, F3 40.1 Hz
  • Driver Match: JL Audio 10TW3, dual 4 ohm
  • Impedance: dual 4 ohm pair, 4 or 1 ohms
  • Construction: Dual Chamber | Rear-Firing Wedge | V-Groove/Dado | Double 1.5" Baffle | Threaded Inserts

Technical specifications

SpecificationValue
SeriesProline X Performance Optimized Wedge
Compatible DriverJL Audio 10TW3, quantity 2. Direct fit
ConfigurationDual 10 inch, dual chamber sealed wedge
Mounting PositionTrunk or cargo area, tall face against the rear seat back
Firing DirectionRearward into the trunk. Not a down fire design, no feet included
External Width32.00 in
External Height15 in at the seat face
External Depth10.35 in at the base, tapering to 4.89 in at the top
Internal Volume, Gross1.07 cu ft total, 0.53 per chamber
Internal Volume, Net Acoustic1.000 cu ft total, 0.500 per driver
AlignmentQtc 0.960, fc 50.0 Hz, F3 40.1 Hz anechoic
Driver Cutout9.6060 in
Driver Mounting Depth3.268 in required
Power Handling800 watts RMS total across the pair
ImpedanceDual 4 ohm per driver
MaterialLangboard Elite MDF
ConstructionCNC cut, V-groove and dado joinery
Panel Thickness0.75 in
Front Baffle1.5 in, double baffle
Internal BracingFull chamber divider
Driver MountingThreaded inserts at every mounting location, stainless machine screws included
Terminal CupsOne Proline X ABS and carbon fiber composite, side mounted, pre wired 12 gauge OFC
DampingLight polyfill wall lining, does not alter acoustic volume
CarpetPlush black
Weight38.9 lb
Warranty1 Year Limited
Built InTullahoma, Tennessee

Performance in this enclosure

Net airspace
0.50
cu ft per chamber
System Qtc
0.96
sealed
Half power
40.1
Hz · F3
Xmax at
677
W RMS · no filter
With 25 Hz subsonic
713
W RMS · +5%
Amplifier
400
W RMS recommended
This enclosure holds 0.50 cu ft net per chamber. In it the JL Audio 10TW3 runs a system Qtc of 0.96 with half power at 40.1 Hz, and the cone reaches its 15.2 mm travel limit at 677 W, above the driver’s 400 W thermal rating, so heat stops you before travel does. Run a subsonic filter at 25 Hz and that becomes 713 W — +36 W, or 5 percent more power for the same 15.2 mm of travel.

01Is it a sealed driver?

Efficiency bandwidth product places the motor before anything else is decided.

EBP = Fs ÷ Qes = 48.9
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 D4 48.9
D4 · EBP 48.9
EBP under 50 means a motor that wants a sealed load. The 10TW3 sits at 48.9, inside that band, which is why this is a sealed build rather than a ported one.

02What the box does to it

0.50 cu ft against a 19.8 L Vas.

α = Vas ÷ Vb = 1.40  ·  Fc = Fs√(α+1) = 50 Hz  ·  Qtc = 0.96
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
D4 · Qtc 0.96, Fc 50 Hz, F3 40.1 Hz
The box lifts resonance from 32.3 Hz free-air to 50 Hz and half power lands at 40.1 Hz, anechoic, before any cabin gain.

03The watts that reach Xmax (in this enclosure)

Travel scales with the square root of power, so there is one wattage that puts the cone exactly on 15.2 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

PXmax = 677 W unfiltered  →  713 W with a 25 Hz subsonic
20 30 50 70 100 150 200 0 4 8 12 16 FREQUENCY · Hz CONE TRAVEL · mm PAST LINEAR TRAVEL · Xmax 15.2 mm 677 W reaches Xmax here
D4 · 677 W, no filterD4 · 713 W with subsonic at 25 Hz, 24 dB/octXmax 15.2 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 15.2 mm. Unfiltered that is 677 W, reached first at 34 Hz. It sits above the 400 W the driver can take thermally, so the voice coil gives up before the suspension does. The dashed traces are the same driver behind a subsonic filter at 25 Hz, 24 dB/oct: stopping the cone wasting travel below the passband lets it take 713 W before hitting the same 15.2 mm. That is 5 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs32.30Hzfree-air resonance
Qts0.620D4
Vas19.80Lequivalent compliance
Sd365.0cm²effective piston area
Xmax15.2mmone-way linear travel
Pe400Wcontinuous RMS
SPL81.9dB1 W / 1 m, derived from T/S

Driver parameters as published by loudspeakerdatabase.com. Curves computed against this enclosure’s actual net airspace.

Installer's take

0. at Qtc 0.960 and F3 40.1 Hz anechoic, per chamber, computed from published Thiele-Small.

On impedance: Each driver is a dual 4 ohm. Wired in series a driver is 8 ohms, and the pair in parallel gives 4 ohms. Wiring each driver's coils in parallel and the pair in parallel gives 1 ohm, which needs an amplifier rated for it.

Measure the base depth. This cabinet is 10.35 inches deep at the trunk floor, 4.89 at the top, and 32.00 wide.

Questions

Will this enclosure fit two 10TW3?

Yes. Both positions are CNC cut to 9.6060 in for the 10TW3's cutout and the cabinet clears its 3.268 in mounting depth. Threaded inserts are pressed in at every mounting location.

Why 0.500 cubic feet net per driver?

0.500 cubic feet net per driver, the same airspace the single version of this cabinet holds. The alignment is identical: Qtc 0.960 either way. Each chamber is 0.53 cu ft gross before the driver's displacement.

What amplifier power should I run, and what impedance?

The JL Audio 10TW3 is rated 400 watts RMS each, so 800 across the pair. Each driver is a dual 4 ohm. Wired in series a driver is 8 ohms, and the pair in parallel gives 4 ohms. Wiring each driver's coils in parallel and the pair in parallel gives 1 ohm, which needs an amplifier rated for it. Aim for roughly 560 to 800 watts at the final wired impedance.

How does a wedge enclosure improve the sound in a trunk installation?

The angled seat-side face matches the roughly 20 degree lean of a factory rear seat, so the cabinet sits flat against it instead of leaving a wasted triangle. The vertical trunk-lid-side face carries both drivers, firing rearward into the trunk cavity.

Why two separate chambers instead of one shared one?

A shared chamber lets each cone modulate the other's air load, which makes the pair less predictable under hard excursion. A full divider gives each driver its own sealed volume, so both behave exactly as the single version does.

What is the expected low-frequency extension?

Half power lands at 40.1 Hz anechoic, before any cabin gain. Qtc is 0.960. These figures exclude cabin gain, which in most vehicles adds real output below 40 Hz.

Do I need to add polyfill or damping?

No. Polyfill is already installed as a light wall lining and the quantity is chosen so it does not change the acoustic volume. Do not add more.

Are the drivers included?

No. This is an enclosure only. You receive the cabinet finished in plush black carpet, with threaded inserts at both driver positions, stainless machine screws, one side-mounted pre-wired terminal cup and the polyfill lining already installed.

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