NVX VCW122v3

12″ subwoofer · dual 2 Ω · 1,200 W RMS

Fs 25.1 HzQts 0.40Vas 1.51 ft³Xmax 0.91″

Recommended box

For a sedan, one sub, 1,200 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 volume0.74 ft³ (21 L)
Qtc0.70
Fc44 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume1.62 ft³ (46 L)
Tuning (Fb)27 Hz
Port2 round ports Ø2 1/2″, 20 11/16″ long
Port velocity at 1,200 W206 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)30 1/2″ × 15 3/4″ × 9 1/4″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25.1 Hz
Qts0.40
Qes0.434
Qms5.12
Vas1.51 ft³
Re (one coil)1.6 Ω
Sd82.2 in²
Xmax0.91″
Vd74.4 in³ calc.
Mms374 g calc.
BL14.7 T·m calc.
EBP58 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.9 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,200 W

Mounting dimensions

Ø12 5/8″cutout Ø11 3/16″mounting depth 6 7/8″magnet Ø≈ 7 1/4″
Cutout diameter11 3/16″
Mounting depth6 7/8″
Overall diameter12 5/8″

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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 NVX 12″ models