Proline X PO 10TW-S W W104ES sealed wedge enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Performance Optimized · Datasheet

Performance Optimized Wedge Wide Sealed Triple 10" Enclosure Sony XS-W104ES · Triple 10" Sealed enclosure

Net volume: 0.760 cu ft per driver, 2.28 cu ft total, after both dividers and an estimated 0.081 cu ft displacement per driver
Max mounting depth: 5.39 in required; 2.03 in clearance above the motor against the raked rear panel
External dimensions: 40 in W × 17 in at the seat face H × 13.91 in at the base D
Front baffle: 1.5 in double baffle, outer layer machined as a flush recess

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Sony XS-W104ESBuy at Audio Intensity

Best For: Triple Sony XS-W104ES SUV Cargo-Floor Builds
Net Volume: 0.760 cu ft per Driver (2.28 cu ft Net Total)
Driver Match: Three Sony XS-W104ES (Single 4 Ohm), matched
Construction: 3 Chambers | 40" Wide Wedge | V-Groove/Dado | Double 1.5" Baffle | 3 Terminal Cups

Spec of record

Technical specifications

Specification	Value
Series	Proline X Performance Optimized Wedge Wide
Compatible Driver	Sony XS-W104ES, quantity 3, matched. Direct fit
Configuration	Triple 10 inch sealed wedge, 3 chambers, 1 driver per chamber
Mounting Position	SUV cargo floor, raked face against the rear seat back
Firing Direction	Rearward toward the liftgate. Not a down fire design
External Width	40 in
External Height	17 in at the seat face
External Depth	13.91 in at the base, tapering to 7.72 in at the top
Internal Volume, Gross	2.63 cu ft total
Internal Volume, Net Acoustic	0.760 cu ft per driver, 2.28 cu ft total, after both dividers and an estimated 0.081 cu ft displacement per driver
Driver Mounting Depth	5.39 in required; 2.03 in clearance above the motor against the raked rear panel
Alignment Per Driver	XS-W104ES Qtc 0.707, fc 57.1 Hz, F3 57.1 Hz anechoic
Woofer Openings	3 at 9.210 in
Woofer Layout	One row across the face
Frame Outer Diameter	10.98 in
Fs / Qts / Qes / Qms	39.6 Hz / 0.490 / 0.520 / 7.030
Vas / Sd / Xmax	23.3 L / 362 cm2 / 6 mm
Driver Power Handling	450 W RMS per driver, 1350 W RMS for the set of 3 (thermal rating)
Recommended Amplifier	80-110 W RMS per driver, 240-330 W RMS for the full set, at 12 ohms
Parameter Source	Sony published specifications
Material	Langboard Elite MDF
Construction	CNC cut, V-groove and dado joinery
Panel Thickness	0.75 in
Front Baffle	1.5 in double baffle, outer layer machined as a flush recess
Internal Bracing	Two full-height 3/4 in dividers
Driver Mounting	Threaded inserts, stainless machine screws included
Terminal Cups	Three Proline X ABS and carbon fiber composite, on the rear panel, one per chamber, pre wired 12 gauge OFC
Acrylic Insert	Gloss black acrylic baffle insert standard
Damping	Light polyfill wall lining in every chamber, does not alter acoustic volume
Carpet	Plush black
Shipping Weight	70 lb
Warranty	1 Year Limited
Built In	Tullahoma, Tennessee

Modelled response

Performance in this enclosure

Net airspace

0.760

cu ft per driver

System Qtc

0.71

sealed

Half power

57.1

Hz · F3

Xmax at

W RMS per driver · no filter

With 25 Hz subsonic

116

W RMS per driver · +20%

Amplifier, per driver

80–110

W RMS recommended

This enclosure holds 0.760 cu ft net per driver. In it the Sony XS-W104ES runs a system Qtc of 0.71 with half power at 57.1 Hz, and the cone reaches its 6.5 mm travel limit at 97 W per driver, below the driver’s 450 W thermal rating, so travel is what stops you here, not heat. Run a subsonic filter at 25 Hz and that becomes 116 W per driver — +19 W, or 20 percent more power for the same 6.5 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 80–110 W RMS × 3 drivers = full set 240–330 W RMS at 12 ohms

Look for a mono amplifier rated 240–330 W RMS at 12 ohms, the load the set wires to most easily. Travel sets the top here, not heat: past 116 W per driver the cone runs beyond Xmax even with the subsonic set, under the driver’s 450 W thermal rating. The top of the range needs the 25 Hz subsonic filter set; without it, keep each driver under 97 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 = 76.2

Single 4 Ohm · EBP 76.2

At 76.2 the XS-W104ES sits in the transition band, not the sealed band. That is not a mismatch: a transition motor works in either alignment, and sealed buys a smaller box and a gentler roll-off at the cost of some low-end output. Stage 02 shows what this airspace actually does with it.

02What the box does to it

0.760 cu ft against a 23.3 L Vas.

α = Vas ÷ Vb = 1.08 · Fc = Fs√(α+1) = 57 Hz · Qtc = 0.71

Single 4 Ohm · Qtc 0.71, Fc 57 Hz, F3 57.1 Hz

The box lifts resonance from 39.6 Hz free-air to 57 Hz and half power lands at 57.1 Hz, anechoic, before any cabin gain. Figures are Sony’s published parameters; Qes and Qms reproduce the printed Qts. This cabinet holds three drivers in three separate sealed chambers of 0.760 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 6.5 mm — and a bigger one once a subsonic filter stops it wasting travel below the passband.

P_Xmax = 97 W per driver unfiltered → 116 W per driver with a 25 Hz subsonic

Single 4 Ohm · 97 W, no filterSingle 4 Ohm · 116 W with subsonic at 25 Hz, 24 dB/octXmax 6.5 mm one-way

Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 6.5 mm. Unfiltered that is 97 W per driver, reached first at 20 Hz. It sits under the 450 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 116 W per driver before hitting the same 6.5 mm. That is 20 percent more amplifier for the price of one filter setting.

Param	Value	Unit	Note
Fs	39.60	Hz	free-air resonance
Qts	0.490		Single 4 Ohm
Vas	23.30	L	equivalent compliance
Sd	362.0	cm²	effective piston area
Xmax	6.5	mm	one-way linear travel
Pe	450	W	continuous RMS
SPL	86.3	dB	1 W / 1 m, derived from T/S

Driver parameters as published by Sony XS-W104ES published specifications. Curves computed against this enclosure’s actual net airspace.

From the shop floor

Installer's take

Start with the size. 0.760 cubic feet per driver puts the XS-W104ES at Qtc 0.707, resonance 57.1 Hz, half power 57.1 Hz anechoic: maximally flat, no peak, the lowest F3 a sealed box reaches without a lift. Sony publish no sealed recommendation for the XS-W104ES, so this is the Butterworth box.

Measure the base depth, not the top. This cabinet is 13.91 in deep where it meets the floor, 7.72 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. XS-W104ES: wire for 12 ohms (the three in series), the load most monoblocks are built to deliver full power into; 1.33 ohms is the other clean option (the three in parallel). Work the load out before you buy the amplifier, not after.

Power. Size the amplifier for the set, not one driver: 80 to 110 W RMS per driver is 240 to 330 W RMS across all 3 at 12 ohms. On this driver travel sets the top, not heat: Xmax arrives at 116 W per driver with a 25 Hz subsonic, under the 450 W rating. Set the 25 Hz subsonic to use the top of that range; without it keep each driver under 97 W.

Sony's Qes and Qms reproduce the printed Qts within 3 percent, so the alignment rests on a self-consistent set. Sony do not publish driver displacement; we deduct an estimated 0.081 per driver, so true net can sit a few hundredths either way.

Polyfill is in as a wall lining in every chamber. Do not add more: it makes the box act larger and walks Qtc off 0.71.

Before you order

Questions

Does this fit the Sony XS-W104ES, and its coil versions?

Yes. Each opening is cut to 9.210 in for the 10.98 in frame, and the 5.39 in deep motor clears the raked rear panel with 2.03 in to spare. Coil versions of the Sony XS-W104ES share the frame, cutout and mounting depth, so any of them drops in. The alignment on this page is computed on the XS-W104ES parameters.

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

Why 0.760 cubic feet per driver, and what alignment does it target?

On Sony's published Fs 39.6 Hz, Qts 0.490 and Vas 23.3 liters, 0.760 cubic feet per driver gives Qtc 0.707, system resonance 57.1 Hz and half power 57.1 Hz.

Qtc 0.707 is maximally flat: the deepest response a sealed box gives without a lift near resonance.

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

Sony rates the XS-W104ES at 450 watts RMS per driver. Recommended amplifier: 80 to 110 W RMS per driver, 240 to 330 W RMS for the full set of 3. Travel, not heat, sets the top: the cone reaches Xmax at 116 W per driver with a 25 Hz subsonic set, under the 450 W rating. The top of that range needs the 25 Hz subsonic; without it keep each driver under 97 W.

Each XS-W104ES has a single 4 ohm voice coil. The three in parallel present 1.33 ohms; in series, 12 ohms. 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 13.91 deep at the base, tapering to 7.72 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 57.1 Hz per driver with system resonance at 57.1 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 0.760 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 Sony XS-W104ES drivers. The cabinet is cut direct fit to them, not a general purpose 10 inch box.

Same series, same size