Skar Audio ZVX-18v2 D1

18″ subwoofer · dual 1 Ω · 1,600 W RMS

Fs 26.1 HzQts 0.47Vas 5.35 ft³Xmax 1.14″

Recommended box

For a sedan, one sub, 1,600 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 volume2.86 ft³ (81 L)
Qtc0.80
Fc44 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)20 1/16″ × 20 1/16″ × 17″
Open sealed box in designer

Ported

Net volume6.99 ft³ (198 L)
Tuning (Fb)27 Hz
Portslot 3 15/16 × 19 7/16″, 32 15/16″ long
Port velocity at 1,600 W64 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 20 7/8″ × 27 3/4″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.1 Hz
Qts0.47
Qes0.52
Qms5.1
Vas5.35 ft³
Re (one coil)≈ 0.85 Ω
Sd180.4 in²
Xmax1.14″
Vd206 in³ calc.
Mms471 g calc.
BL11.2 T·m calc.
EBP50 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.2 dB calc.

General

Size18″
Voice coilsdual 1 Ω
RMS power1,600 W

Mounting dimensions

Ø18 1/2″cutout Ø16 7/8″mounting depth 10 11/16″magnet Ø7 13/16″
Cutout diameter16 7/8″
Mounting depth10 11/16″
Overall diameter18 1/2″
Magnet diameter7 13/16″

“≈” 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 Skar Audio 18″ models