Kicker SoloX 18" 4-Ohm DVC (S18X D4)

18″ subwoofer · dual 4 Ω · 5,000 W RMS

Fs 25.2 HzQts 0.41Vas 5.59 ft³Xmax 0.96″

Recommended box

For a sedan, one sub, 5,000 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 volume2.12 ft³ (60 L)
Qtc0.77
Fc48 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)19 11/16″ × 19 11/16″ × 13 7/8″
Open sealed box in designer

Ported

Net volume6.32 ft³ (179 L)
Tuning (Fb)27 Hz
Port2 round ports Ø4″, 11 3/4″ long
Port velocity at 5,000 W333 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 20 1/2″ × 22″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25.2 Hz
Qts0.41
Qes0.43
Qms7.3
Vas5.59 ft³
Re (one coil)3.73 Ω
Sd221 in²
Xmax0.96″
Vd213.2 in³ calc.
Mms726 g calc.
BL31.6 T·m calc.
EBP59 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.7 dB calc.

General

Size18″
Voice coilsdual 4 Ω
RMS power5,000 W

Mounting dimensions

≈ 17 11/16″ × ≈ 17 11/16″cutout ≈ 16 9/16″mounting depth 11 3/8″magnet Ø≈ 10 3/4″
Cutout (square, side)≈ 16 9/16″
Mounting depth11 3/8″

“≈” 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 18″ models