American Bass XD-1222

12″ subwoofer · dual 2 Ω · 500 W RMS

Fs 41 HzQts 0.60Vas 0.91 ft³Xmax 0.45″

Recommended box

For a sedan, one sub, 500 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 volume1.17 ft³ (33 L)
Qtc0.80
Fc55 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 14 1/8″
Open sealed box in designer

Ported

Net volume3.07 ft³ (87 L)
Tuning (Fb)30 Hz
Portslot 2 3/8 × 14 5/16″, 27 15/16″ long
Port velocity at 500 W63 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs41 Hz
Qts0.60
Qes0.672
Qms5.41
Vas0.91 ft³
Re (one coil)≈ 1.7 Ω
Sd79.8 in²
Xmax0.45″
Vd35.8 in³ calc.
Mms219 g calc.
BL11.9 T·m calc.
EBP61 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.2 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power500 W

Mounting dimensions

Ø≈ 12 1/2″cutout Ø11 5/16″mounting depth 6 9/16″magnet Ø≈ 7 3/8″
Cutout diameter11 5/16″
Mounting depth6 9/16″

Cone area (Sd) calculated from Fs, Vas and Mms: 79.8 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