American Bass VELOCITY-1211

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

Fs 32.1 HzQts 0.31Vas 0.75 ft³Xmax 0.69″

Recommended box

For a sedan, one sub, 2,200 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 volume0.90 ft³ (25.5 L)
Qtc0.41
Fc43 Hz
F3 (−3 dB, no cabin gain)89 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 11 1/2″
Open sealed box in designer

Ported

Net volume1.34 ft³ (38 L)
Tuning (Fb)27 Hz
Portround port Ø2 1/2″, 11 3/4″ long
Port velocity at 2,200 W567 ft/s
F3 (−3 dB, no cabin gain)69 Hz
Example box (outside)19 9/16″ × 15 3/4″ × 11 7/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.1 Hz
Qts0.31
Qes0.326
Qms4.78
Vas0.75 ft³
Re (one coil)≈ 0.85 Ω
Sd70.8 in²
Xmax0.69″
Vd48.8 in³ calc.
Mms342 g calc.
BL13.4 T·m calc.
EBP99 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.3 dB calc.

General

Size12″
Voice coilsdual 1 Ω
RMS power2,200 W

Mounting dimensions

Ø≈ 12 1/2″cutout Ø11 5/16″mounting depth 9″magnet Ø≈ 7 3/8″
Cutout diameter11 5/16″
Mounting depth9″

Cone area (Sd) calculated from Fs, Vas and Mms: 70.8 in².

“≈” 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 American Bass 12″ models