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Proline X PO 10TW-S W S10TD sealed wedge enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Performance Optimized · Datasheet

Performance Optimized Wedge Wide Sealed Triple 10" Enclosure PowerBass S-10TD · Triple 10" Sealed enclosure

Net volume
1.736 cu ft per driver, 5.21 cu ft total, after both dividers and PowerBass's published 0.083 cu ft displacement per driver
Max mounting depth
3.25 in required; 13.26 in clearance above the motor against the raked rear panel
External dimensions
40 in W × 17 in at the seat face H × 23.00 in at the base D
Front baffle
1.5 in double baffle, outer layer machined as a flush recess
Buy at Audio IntensityFactory-direct, ships from Tullahoma
PowerBass S-10TDBuy at Audio Intensity
  • Best For: Triple PowerBass S-10TD SUV Cargo-Floor Builds
  • Net Volume: 1.736 cu ft per Driver (5.21 cu ft Net Total)
  • Driver Match: Three PowerBass S-10TD (D4), matched
  • Construction: 3 Chambers | 40" Wide Wedge | V-Groove/Dado | Double 1.5" Baffle | 3 Terminal Cups

Spec of record

Technical specifications

SpecificationValue
SeriesProline X Performance Optimized Wedge Wide
Compatible DriverPowerBass S-10TD, quantity 3, matched. Direct fit
ConfigurationTriple 10 inch sealed wedge, 3 chambers, 1 driver per chamber
Mounting PositionSUV cargo floor, raked face against the rear seat back
Firing DirectionRearward toward the liftgate. Not a down fire design
External Width40 in
External Height17 in at the seat face
External Depth23.00 in at the base, tapering to 16.81 in at the top
Internal Volume, Gross5.69 cu ft total
Internal Volume, Net Acoustic1.736 cu ft per driver, 5.21 cu ft total, after both dividers and PowerBass's published 0.083 cu ft displacement per driver
Driver Mounting Depth3.25 in required; 13.26 in clearance above the motor against the raked rear panel
Alignment Per DriverS-10TD Qtc 0.960, fc 44.2 Hz, F3 35.4 Hz anechoic
Woofer Openings3 at 9.173 in
Woofer LayoutOne row across the face
Frame Outer Diameter10.736 in
Fs / Qts / Qes / Qms37.0 Hz / 0.804 / 0.930 / 5.800
Vas / Sd / Xmax20.9 L / 363 cm2 / 7 mm
Driver Power Handling275 W RMS per driver, 825 W RMS for the set of 3 (thermal rating)
Recommended Amplifier60-80 W RMS per driver, 180-240 W RMS for the full set, at 2.67 ohms
Parameter SourcePowerBass published specifications
MaterialLangboard Elite MDF
ConstructionCNC cut, V-groove and dado joinery
Panel Thickness0.75 in
Front Baffle1.5 in double baffle, outer layer machined as a flush recess
Internal BracingTwo full-height 3/4 in dividers
Driver MountingThreaded inserts, stainless machine screws included
Terminal CupsThree Proline X ABS and carbon fiber composite, on the rear panel, one per chamber, pre wired 12 gauge OFC
Acrylic InsertGloss black acrylic baffle insert standard
DampingLight polyfill wall lining in every chamber, does not alter acoustic volume
CarpetPlush black
Shipping Weight96 lb
Warranty1 Year Limited
Built InTullahoma, Tennessee

Modelled response

Performance in this enclosure

Net airspace
1.736
cu ft per driver
System Qtc
0.96
sealed
Half power
35.4
Hz · F3
Xmax at
72
W RMS per driver · no filter
With 25 Hz subsonic
80
W RMS per driver · +11%
Amplifier, per driver
60–80
W RMS recommended
This enclosure holds 1.736 cu ft net per driver. In it the PowerBass S-10TD runs a system Qtc of 0.96 with half power at 35.4 Hz, and the cone reaches its 6.8 mm travel limit at 72 W per driver, below the driver’s 275 W thermal rating, so travel is what stops you here, not heat. Run a subsonic filter at 25 Hz and that becomes 80 W per driver — +8 W, or 11 percent more power for the same 6.8 mm of travel.

00Sizing the amplifier

Every wattage on this panel is per driver. This cabinet holds three, so the amplifier feeds all three at once.

Per driver 60–80 W RMS  ×  3 drivers  =  full set 180–240 W RMS at 2.67 ohms
Look for a mono amplifier rated 180–240 W RMS at 2.67 ohms, the load the set wires to most easily. Travel sets the top here, not heat: past 80 W per driver the cone runs beyond Xmax even with the subsonic set, under the driver’s 275 W thermal rating. The top of the range needs the 25 Hz subsonic filter set; without it, keep each driver under 72 W, where the cone reaches Xmax unfiltered. Below the bottom of the range it will play, just with less headroom; above the top you are buying power the drivers cannot use.

01Is it a sealed driver?

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

EBP = Fs ÷ Qes = 39.8
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 D4 39.8
D4 · EBP 39.8
EBP under 50 means a motor that wants a sealed load. The S-10TD sits at 39.8, inside that band, which is why this is a sealed build rather than a ported one.

02What the box does to it

1.736 cu ft against a 20.9 L Vas.

α = Vas ÷ Vb = 0.42  ·  Fc = Fs√(α+1) = 44 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 44 Hz, F3 35.4 Hz
The box lifts resonance from 37.0 Hz free-air to 44 Hz and half power lands at 35.4 Hz, anechoic, before any cabin gain. Figures are PowerBass’s published parameters; Qes and Qms reproduce the printed Qts. This cabinet holds three drivers in three separate sealed chambers of 1.736 cubic feet each, the volume plotted here.

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 6.8 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

PXmax = 72 W per driver unfiltered  →  80 W per driver with a 25 Hz subsonic
20 30 50 70 100 150 200 0 4 8 FREQUENCY · Hz CONE TRAVEL · mm PAST LINEAR TRAVEL · Xmax 6.8 mm 72 W reaches Xmax here
D4 · 72 W, no filterD4 · 80 W with subsonic at 25 Hz, 24 dB/octXmax 6.8 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 6.8 mm. Unfiltered that is 72 W per driver, reached first at 30 Hz. It sits under the 275 W the driver can take thermally, so the enclosure sets the ceiling, not the voice coil. 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 80 W per driver before hitting the same 6.8 mm. That is 11 percent more amplifier for the price of one filter setting.
ParamValueUnitNote
Fs37.00Hzfree-air resonance
Qts0.804D4
Vas20.86Lequivalent compliance
Sd363.0cm²effective piston area
Xmax6.8mmone-way linear travel
Pe275Wcontinuous RMS
SPL82.4dB1 W / 1 m, derived from T/S

Driver parameters as published by PowerBass S-10TD published specifications. Curves computed against this enclosure’s actual net airspace.

From the shop floor

Installer's take

Start with the size. 1.736 cubic feet per driver puts the S-10TD at Qtc 0.960, resonance 44.2 Hz, half power 35.4 Hz anechoic. The wide platform stops at 23 inches deep, so this box lands a little above flat: a small lift near resonance and firm midbass.

Measure the base depth, not the top. This cabinet is 23.00 in deep where it meets the floor, 16.81 at the top, 40 wide and 17 tall. In an SUV the 40 has to clear between the rear wheel wells at floor height, the base depth is measured from the seat back with the seat upright and latched, and the 17 has to clear the cargo cover.

All three terminal cups are on the rear panel, and the rear panel is the face that goes against the seat back. Wire all three before the box goes in, with enough slack to slide it into place; once the raked face is against the seat you cannot reach them.

Impedance. S-10TD: wire for 2.67 ohms (coils in series, the three cups in parallel), the load most monoblocks are built to deliver full power into; 6 ohms is the other clean option (coils in parallel, the three in series). Work the load out before you buy the amplifier, not after.

Power. Size the amplifier for the set, not one driver: 60 to 80 W RMS per driver is 180 to 240 W RMS across all 3 at 2.67 ohms. On this driver travel sets the top, not heat: Xmax arrives at 80 W per driver with a 25 Hz subsonic, under the 275 W rating. Set the 25 Hz subsonic to use the top of that range; without it keep each driver under 72 W.

PowerBass's Qes and Qms reproduce the printed Qts within 3 percent, so the alignment rests on a self-consistent set.

Polyfill is in as a wall lining in every chamber. Do not add more: it makes the box act larger and walks Qtc off 0.96.

Before you order

Questions

Does this fit the PowerBass S-10TD, and its coil versions?

Yes. Each opening is cut to 9.173 in for the 10.736 in frame, and the 3.25 in deep motor clears the raked rear panel with 13.26 in to spare. Coil versions of the PowerBass S-10TD share the frame, cutout and mounting depth, so any of them drops in. The alignment on this page is computed on the S-10TD parameters.

Run three matched drivers, same model and same coil, so every chamber sees the alignment on this page.

Why 1.736 cubic feet per driver, and what alignment does it target?

On PowerBass's published Fs 37.0 Hz, Qts 0.804 and Vas 20.9 liters, 1.736 cubic feet per driver gives Qtc 0.960, system resonance 44.2 Hz and half power 35.4 Hz.

The wide platform stops at 23 inches deep, so this box lands a little above flat: a small lift near resonance and firm midbass.

What amplifier power should I run, and how should I wire it?

PowerBass rates the S-10TD at 275 watts RMS per driver. Recommended amplifier: 60 to 80 W RMS per driver, 180 to 240 W RMS for the full set of 3. Travel, not heat, sets the top: the cone reaches Xmax at 80 W per driver with a 25 Hz subsonic set, under the 275 W rating. The top of that range needs the 25 Hz subsonic; without it keep each driver under 72 W.

Each S-10TD has two 4 ohm voice coils, 8 ohms in series or 2 ohms in parallel. With each driver's coils in series and the three cups in parallel, the three present 2.67 ohms to a mono amplifier. With each driver's coils in parallel and the three in series, they present 6 ohms. Three drivers do not reach the round loads a pair does, so check the result against your amplifier's minimum stable impedance before powering up.

Will it fit my SUV?

It is 40 inches wide, 17 tall and 23.00 deep at the base, tapering to 16.81 at the top. Measure between the rear wheel wells, the floor depth with the seat upright, and the height under your cargo cover.

The raked face goes against the seat back and the woofers fire toward the liftgate.

Why are all three terminal cups on the back?

Each driver has its own sealed chamber, and the center chamber has no side wall to take a cup. Putting all three on the rear panel gives a matching set, one cup per chamber.

Wire them at the amplifier end; there is no cross-chamber wiring inside the cabinet.

What is the expected low-frequency extension?

Anechoic F3 is 35.4 Hz per driver with system resonance at 44.2 Hz.

Those figures exclude cabin gain. An SUV cabin adds real output below about 50 Hz, so in-vehicle response runs deeper than the numbers above.

Do I need to add polyfill or damping?

No. Polyfill is already installed as a light wall lining in every chamber, and the quantity is chosen so it does not change the acoustic volume.

Do not add more. Packing a sealed box makes it behave as though it were larger, which moves the alignment away from 1.736 cubic feet per driver.

Are the drivers included?

No. This is an enclosure only. You receive the cabinet finished in plush black carpet with the gloss black acrylic baffle insert, three pre-wired terminal cups on the rear panel, the polyfill lining in place, threaded inserts and stainless machine screws.

Bring three matched PowerBass S-10TD drivers. The cabinet is cut direct fit to them, not a general purpose 10 inch box.

Same series, same size

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