American Bass PATRIOT-1244

12″ subwoofer · dual 2 Ω · 400 W RMS

Fs 34.6 HzQts 0.39Vas 2.24 ft³

Recommended box

For a sedan, one sub, 400 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)
Qtc0.79
Fc69 Hz
F3 (−3 dB, no cabin gain)67 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume2.30 ft³ (65 L)
Tuning (Fb)37 Hz
Portslot 1 3/4 × 14 5/16″, 17 7/16″ long
Port velocity at 400 W63 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 3/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.6 Hz
Qts0.39
Qes0.454
Qms2.93
Vas2.24 ft³
Re (one coil)1.8 Ω
Sd79.8 in²
Xmax≈ 0.39″
Mms125 g calc.
BL10.4 T·m calc.
EBP76 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.6 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power400 W

Mounting dimensions

Ø≈ 12 5/16″cutout ≈ Ø11 1/8″mounting depth ≈ 5 7/8″magnet Ø6 1/8″
Cutout diameter≈ 11 1/8″
Mounting depth≈ 5 7/8″
Magnet diameter6 1/8″

“≈” 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