Kicker CompRT 6.75" 4-Ohm DVC (48CWRT674)

6.8″ subwoofer · dual 4 Ω · 150 W RMS

Fs 68.9 HzQts 0.99Vas 0.10 ft³Xmax 0.27″

Recommended box

For a sedan, one sub, 150 W. It’s the same math as the designer’s step-by-step mode, where you can fit the box to your space, vehicle and amp and get plans, a cut sheet and DXF.

Sealed

Net volume0.21 ft³ (6 L)
Qtc1.21
Fc84 Hz
F3 (−3 dB, no cabin gain)63 Hz
Example box (outside)8 11/16″ × 8 11/16″ × 9″
Open sealed box in designer

Ported

Net volume0.78 ft³ (22 L)
Tuning (Fb)41 Hz
Portround port Ø3″, 12 3/16″ long
Port velocity at 150 W101 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)13 5/16″ × 15 3/4″ × 10 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs68.9 Hz
Qts0.99
Qes1.079
Qms11.54
Vas0.10 ft³
Re (one coil)3.95 Ω
Sd19.6 in²
Xmax0.27″
Vd5.3 in³ calc.
Mms41 g calc.
BL8 T·m calc.
EBP64 — sealed or ported calc.
Sensitivity, 1 W / 1 m81.5 dB calc.

General

Size6.8″
Voice coilsdual 4 Ω
RMS power150 W

Mounting dimensions

Ø6 13/16″cutout Ø5 5/8″mounting depth 2 3/4″magnet Ø4 3/16″
Cutout diameter5 5/8″
Mounting depth2 3/4″
Overall diameter6 13/16″
Magnet diameter4 3/16″

“≈” means the value isn’t in the spec sheet and a typical value for the size is used; “calc.” means it’s calculated from the published parameters. Check the manufacturer’s spec sheet before you build.

Data sources

Other Kicker 6.8″ models