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Proline X PO 12T-S W CWRT sealed wedge enclosure, product photos pending. Placeholder graphic reading Photos Coming Soon.

Performance Optimized · Datasheet

Performance Optimized Wedge Wide Sealed Triple 12" Enclosure Kicker CompRT12 · Triple 12" Sealed enclosure

Net volume
0.733 cu ft per driver, 2.20 cu ft total, after both dividers and Kicker's published 0.054 cu ft displacement per driver
Max mounting depth
3.75 in required; 2.43 in clearance above the motor against the raked rear panel
External dimensions
44 in W × 17 in at the seat face H × 12.67 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
Kicker CompRT12Buy at Audio Intensity
  • Best For: Triple Kicker CompRT12 SUV Cargo-Floor Builds
  • Net Volume: 0.733 cu ft per Driver (2.20 cu ft Net Total)
  • Driver Match: Three Kicker CompRT12 (Dual 2 Ohm), matched
  • Construction: 3 Chambers | 44" 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 DriverKicker CompRT12, quantity 3, matched. Direct fit
ConfigurationTriple 12 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 Width44 in
External Height17 in at the seat face
External Depth12.67 in at the base, tapering to 6.49 in at the top
Internal Volume, Gross2.45 cu ft total
Internal Volume, Net Acoustic0.733 cu ft per driver, 2.20 cu ft total, after both dividers and Kicker's published 0.054 cu ft displacement per driver
Driver Mounting Depth3.75 in required; 2.43 in clearance above the motor against the raked rear panel
Alignment Per DriverCompRT12 (CWRT122) Qtc 1.100, fc 56.1 Hz, F3 42.5 Hz anechoic
Woofer Openings3 at 11.000 in
Woofer LayoutOne row across the face
Frame Outer Diameter12.5625 in
Fs / Qts / Qes / Qms28.6 Hz / 0.560 / 0.586 / 12.850
Vas / Sd / Xmax59.2 L / 507 cm2 / 13 mm
Driver Power Handling500 W RMS per driver, 1500 W RMS for the set of 3 (thermal rating)
Recommended Amplifier350-500 W RMS per driver, 1,050-1,500 W RMS for the full set, at 3 ohms
Parameter SourceKicker 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 Weight68 lb
Warranty1 Year Limited
Built InTullahoma, Tennessee

Modelled response

Performance in this enclosure

Net airspace
0.733
cu ft per driver
System Qtc
1.10
sealed
Half power
42.5
Hz · F3
Xmax at
566
W RMS per driver · no filter
With 25 Hz subsonic
573
W RMS per driver · +1%
Amplifier, per driver
350–500
W RMS recommended
This enclosure holds 0.733 cu ft net per driver. In it the Kicker CompRT12 (CWRT122) runs a system Qtc of 1.10 with half power at 42.5 Hz, and the cone reaches its 13.35 mm travel limit at 566 W per driver, above the driver’s 500 W thermal rating, so heat stops you before travel does. A 25 Hz subsonic filter adds little here: 573 W per driver against 566 W, 1 percent. The box already resonates at 56 Hz, so its own rolloff has removed most of what the filter would have stopped.

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 350–500 W RMS  ×  3 drivers  =  full set 1,050–1,500 W RMS at 3 ohms
Look for a mono amplifier rated 1,050–1,500 W RMS at 3 ohms, the load the set wires to most easily. The top is the driver’s 500 W thermal rating; with the 25 Hz subsonic set the cone still has travel to spare there, reaching Xmax only at 573 W. 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 = 48.8
SEALED 0–50 TRANSITION 50–100 PORTED 100–150 0 50 100 150 Dual 2 Ohm 48.8
Dual 2 Ohm · EBP 48.8
EBP under 50 means a motor that wants a sealed load. The CompRT12 (CWRT122) sits at 48.8, inside that band, which is why this is a sealed build rather than a ported one.

02What the box does to it

0.733 cu ft against a 59.2 L Vas.

α = Vas ÷ Vb = 2.85  ·  Fc = Fs√(α+1) = 56 Hz  ·  Qtc = 1.10
20 30 50 70 100 150 200 +6 +0 -6 -12 -18 -24 FREQUENCY · Hz LEVEL · dB −3 dB
Dual 2 Ohm · Qtc 1.10, Fc 56 Hz, F3 42.5 Hz
The box lifts resonance from 28.6 Hz free-air to 56 Hz and half power lands at 42.5 Hz, anechoic, before any cabin gain. Figures are Kicker’s published parameters; Qes and Qms reproduce the printed Qts. This cabinet holds three drivers in three separate sealed chambers of 0.733 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 13.35 mm, and in this alignment a subsonic filter barely moves it.

PXmax = 566 W per driver unfiltered  →  573 W per driver 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 13.35 mm 566 W reaches Xmax here
Dual 2 Ohm · 566 W, no filterDual 2 Ohm · 573 W with subsonic at 25 Hz, 24 dB/octXmax 13.35 mm one-way
Every trace touches the limit and no further, because each is drawn at the exact power that puts that coil on 13.35 mm. Unfiltered that is 566 W per driver, reached first at 43 Hz. It sits above the 500 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, and they sit almost on top of the solid ones: 573 W per driver against 566 W. At 56 Hz the filter sits well below resonance, where the sealed alignment has already rolled the cone off at 12 dB/oct, so there is little wasted travel left for it to recover. Set it anyway to keep road rumble out of the cone, but do not size the amplifier around it.
ParamValueUnitNote
Fs28.60Hzfree-air resonance
Qts0.560Dual 2 Ohm
Vas59.19Lequivalent compliance
Sd506.7cm²effective piston area
Xmax13.35mmone-way linear travel
Pe500Wcontinuous RMS
SPL85.6dB1 W / 1 m, derived from T/S

Driver parameters as published by Kicker CompRT12 (CWRT122) published specifications. Curves computed against this enclosure’s actual net airspace.

From the shop floor

Installer's take

Start with the size. The maker's minimum sealed size calls for 0.50 per driver; we stop at 0.733, where Qtc reaches 1.1. 0.733 cubic feet per driver puts the CompRT12 at Qtc 1.100, resonance 56.1 Hz, half power 42.5 Hz anechoic, a pronounced lift near resonance, 1.8 dB above flat.

Measure the base depth, not the top. This cabinet is 12.67 in deep where it meets the floor, 6.49 at the top, 44 wide and 17 tall. In an SUV the 44 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. CompRT12 (CWRT122): wire for 3 ohms (coils in parallel, the three in series), the load most monoblocks are built to deliver full power into; 1.33 ohms is the other clean option (coils in series, the three cups in parallel). Work the load out before you buy the amplifier, not after.

Power. Size the amplifier for the set, not one driver: 350 to 500 W RMS per driver is 1,050 to 1,500 W RMS across all 3 at 3 ohms.

Kicker'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 1.10.

Before you order

Questions

Does this fit the Kicker CompRT12, and its coil versions?

Yes. Each opening is cut to 11.000 in for the 12.5625 in frame, and the 3.75 in deep motor clears the raked rear panel with 2.43 in to spare. Coil versions of the Kicker CompRT12 share the frame, cutout and mounting depth, so any of them drops in. The alignment on this page is computed on the CompRT12 (CWRT122) parameters.

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

Why 0.733 cubic feet per driver, and what alignment does it target?

On Kicker's published Fs 28.6 Hz, Qts 0.560 and Vas 59.2 liters, 0.733 cubic feet per driver gives Qtc 1.100, system resonance 56.1 Hz and half power 42.5 Hz.

The maker's minimum sealed size is 0.50 cubic feet per driver; this cabinet stops at 0.733, where Qtc reaches 1.1, so it stays compact without going past a pronounced lift near resonance, 1.8 dB above flat.

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

Kicker rates the CompRT12 at 500 watts RMS per driver. Recommended amplifier: 350 to 500 W RMS per driver, 1,050 to 1,500 W RMS for the full set of 3.

Each CompRT12 (CWRT122) has two 2 ohm voice coils, 4 ohms in series or 1 ohm in parallel. With each driver's coils in series and the three cups in parallel, the three present 1.33 ohms to a mono amplifier. With each driver's coils in parallel and the three in series, they present 3 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 44 inches wide, 17 tall and 12.67 deep at the base, tapering to 6.49 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 42.5 Hz per driver with system resonance at 56.1 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 0.733 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 Kicker CompRT12 drivers. The cabinet is cut direct fit to them, not a general purpose 12 inch box.

Same series, same size

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