American Bass XR-1222

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

Fs 34.2 HzQts 0.65Vas 0.64 ft³Xmax 0.67″

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 volume1.20 ft³ (34 L)
Qtc0.80
Fc42 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)14 15/16″ × 14 15/16″ × 13 3/4″
Open sealed box in designer

Ported

Net volume2.75 ft³ (78 L)
Tuning (Fb)25 Hz
Portslot 2 3/4 × 14 5/16″, 56 1/8″ long
Port velocity at 1,200 W75 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 19 1/8″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.2 Hz
Qts0.65
Qes0.71
Qms7.32
Vas0.64 ft³
Re (one coil)1.98 Ω
Sd71.6 in²
Xmax0.67″
Vd47.9 in³ calc.
Mms360 g calc.
BL14.7 T·m calc.
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m82.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,200 W

Mounting dimensions

Ø≈ 12 13/16″cutout Ø11 5/8″mounting depth 7 3/4″magnet Ø≈ 7 9/16″
Cutout diameter11 5/8″
Mounting depth7 3/4″

“≈” 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