American Bass XFL-1244

12″ subwoofer · dual 4 Ω · 1,500 W RMS

Fs 38.5 HzQts 0.45Vas 0.83 ft³Xmax 0.67″

Recommended box

For a sedan, one sub, 1,500 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 volume0.83 ft³ (23.5 L)
Qtc0.64
Fc54 Hz
F3 (−3 dB, no cabin gain)64 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 10 3/4″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)34 Hz
Portround port Ø2 1/2″, 6 1/8″ long
Port velocity at 1,500 W520 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)21 9/16″ × 15 3/4″ × 10 13/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.5 Hz
Qts0.45
Qes0.493
Qms5.15
Vas0.83 ft³
Re (one coil)3 Ω
Sd≈ 76 in²
Xmax0.67″
EBP78 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.3 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,500 W

Mounting dimensions

Ø≈ 12 11/16″cutout Ø11 1/2″mounting depth 8 3/8″magnet Ø≈ 7 1/2″
Cutout diameter11 1/2″
Mounting depth8 3/8″

“≈” 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