JBL P1500

15″ subwoofer · 5 Ω · 300 W RMS

Fs 28 HzQts 0.43Vas 8.69 ft³Xmax 0.17″

Recommended box

For a sedan, one sub, 300 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 volume3.21 ft³ (91 L)
Qtc0.83
Fc54 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 13 3/8″
Open sealed box in designer

Ported

Net volume5.44 ft³ (154 L)
Tuning (Fb)37 Hz
Portslot 1 15/16 × 16 5/16″, 6 13/16″ long
Port velocity at 300 W61 ft/s
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 21 3/4″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs28 Hz
Qts0.43
Qes0.48
Qms4.3
Vas8.69 ft³
Re4.5 Ω
Sd140.7 in²
Xmax0.17″
Vd23.3 in³ calc.
Mms153 g calc.
BL15.9 T·m calc.
EBP58 — sealed or ported calc.
Sensitivity, 1 W / 1 m92.5 dB calc.

General

Size15″
Voice coils5 Ω
RMS power300 W

Mounting dimensions

Ø15 1/8″cutout Ø13 9/16″mounting depth 6 5/8″magnet Ø≈ 8 13/16″
Cutout diameter13 9/16″
Mounting depth6 5/8″
Overall diameter15 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 JBL 15″ models