Kicker CompRT 8" 1-Ohm DVC (43CWRT81)

8″ subwoofer · dual 1 Ω · 300 W RMS

Fs 43.7 HzQts 0.64Vas 0.28 ft³Xmax 0.31″

Recommended box

For a sedan, one sub, 300 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 volume0.53 ft³ (15 L)
Qtc0.80
Fc54 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)10 1/4″ × 10 1/4″ × 14″
Open sealed box in designer

Ported

Net volume1.17 ft³ (33 L)
Tuning (Fb)31 Hz
Port2 round ports Ø2 1/2″, 21 15/16″ long
Port velocity at 300 W109 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 6 15/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs43.7 Hz
Qts0.64
Qes0.676
Qms13.92
Vas0.28 ft³
Re (one coil)1.03 Ω
Sd30 in²
Xmax0.31″
Vd9.5 in³ calc.
Mms88 g calc.
BL6.1 T·m calc.
EBP65 — sealed or ported calc.
Sensitivity, 1 W / 1 m82 dB calc.

General

Size8″
Voice coilsdual 1 Ω
RMS power300 W

Mounting dimensions

Ø8 1/2″cutout Ø6 15/16″mounting depth 2 11/16″magnet Ø≈ 4 1/2″
Cutout diameter6 15/16″
Mounting depth2 11/16″
Overall diameter8 1/2″

“≈” 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 8″ models