Kicker Solo-Baric L7XS 18" 1-Ohm DVC (52L7XS181)

18″ subwoofer · dual 1 Ω · 4,000 W RMS

Fs 30.1 HzQts 0.44Vas 2.75 ft³Xmax 1.70″

Recommended box

For a sedan, one sub, 4,000 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 volume2.15 ft³ (61 L)
Qtc0.66
Fc45 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)19 11/16″ × 19 11/16″ × 14 1/16″
Open sealed box in designer

Ported

Net volume4.52 ft³ (128 L)
Tuning (Fb)28 Hz
Portslot 5 1/2 × 19 1/16″, 70 3/4″ long
Port velocity at 4,000 W64 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 20 1/2″ × 30 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30.1 Hz
Qts0.44
Qes0.492
Qms4.04
Vas2.75 ft³
Re (one coil)1.01 Ω
Sd235.8 in²
Xmax1.70″
Vd400 in³ calc.
Mms1,182 g calc.
BL21.4 T·m calc.
EBP61 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.3 dB calc.

General

Size18″
Voice coilsdual 1 Ω
RMS power4,000 W

Mounting dimensions

≈ 17 11/16″ × ≈ 17 11/16″cutout ≈ 16 9/16″mounting depth ≈ 8 1/4″magnet Ø11 5/16″
Cutout (square, side)≈ 16 9/16″
Mounting depth≈ 8 1/4″
Magnet diameter11 5/16″

“≈” 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 18″ models