American Bass SL-1244V2

12″ subwoofer · DVC · 400 W RMS

Fs 29.8 HzQts 0.34Vas 2.67 ft³Xmax 0.47″

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)
Qtc0.73
Fc64 Hz
F3 (−3 dB, no cabin gain)66 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 7/16″
Open sealed box in designer

Ported

Net volume1.80 ft³ (51 L)
Tuning (Fb)36 Hz
Portslot 1 9/16 × 14 5/16″, 21 15/16″ long
Port velocity at 400 W61 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 10 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.8 Hz
Qts0.34
Qes0.366
Qms4.76
Vas2.67 ft³
Re (one coil)≈ 3.4 Ω
Sd82.3 in²
Xmax0.47″
Vd38.9 in³ calc.
Mms150 g calc.
BL16.2 T·m calc.
EBP81 — sealed or ported calc.
Sensitivity, 1 W / 1 m89.4 dB calc.

General

Size12″
Voice coilsDVC
RMS power400 W

Mounting dimensions

Ø≈ 12 5/16″cutout Ø11 1/8″mounting depth 5 3/16″magnet Ø≈ 7 3/16″
Cutout diameter11 1/8″
Mounting depth5 3/16″

“≈” 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