American Bass XR-1544

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

34.7 HzFs, resonance
1.18Qts
1.47 ft³Vas
0.94″Xmax
1,500 WRMS

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

smaller, tighter
2.75 ft³ (78 L)
Net volume
Qtc1.46
Fc43 Hz
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 11 1/2″
Open sealed box in designer

Ported

deeper, louder
4.66 ft³ (132 L)
Net volume
Tuning (Fb)32 Hz
Portslot 3 3/4 × 16 11/16″, 28 7/16″ long
Port velocity at 1,500 W63 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 22 1/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.7 Hz
Qts1.18
Qes1.51
Qms5.31
Vas1.47 ft³
Re (one coil)2.96 Ω
Sd120.8 in²
Xmax0.94″
Vd114.1 in³ calc.
Mms435 g calc.
BL13.6 T·m calc.
EBP23 — suits sealed calc.
Sensitivity, 1 W / 1 m82.6 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,500 W

Mounting dimensions

Ø≈ 15 1/4″cutout Ø14 1/8″mounting depth 8 11/16″magnet Ø≈ 9 3/16″
Cutout diameter14 1/8″
Mounting depth8 11/16″

The published Sd of 63.6 in² doesn't match Fs, Vas and Mms — using the calculated 120.8 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 15″ models