Kicker CompR 8" 4-Ohm DVC (43CWR84)

8″ subwoofer · dual 4 Ω

Fs 44.6 HzQts 0.77Vas 0.32 ft³Xmax 0.41″

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 volume0.64 ft³ (18 L)
Qtc0.95
Fc55 Hz
F3 (−3 dB, no cabin gain)45 Hz
Example box (outside)10 5/8″ × 10 5/8″ × 15 1/16″
Open sealed box in designer

Ported

Net volume1.13 ft³ (32 L)
Tuning (Fb)34 Hz
Portround port Ø2 1/2″, 8 3/8″ long
Port velocity at 300 W220 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)29 11/16″ × 15 3/4″ × 6 1/2″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs44.6 Hz
Qts0.77
Qes0.82
Qms13.89
Vas0.32 ft³
Re (one coil)3.84 Ω
Sd29.2 in²
Xmax0.41″
Vd12.1 in³ calc.
Mms71 g calc.
BL9.6 T·m calc.
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m81.9 dB calc.

General

Size8″
Voice coilsdual 4 Ω
RMS power—

Mounting dimensions

Ø≈ 8 1/2″cutout ≈ Ø7 5/16″mounting depth ≈ 3 15/16″magnet Ø≈ 4 3/4″
Cutout diameter≈ 7 5/16″
Mounting depth≈ 3 15/16″

“≈” 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 8″ models