JBL GTO1502D

15″ subwoofer · dual 2 Ω · 300 W RMS

Fs 25 HzQts 0.50Vas 6.04 ft³Xmax 0.33″

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 volume3.04 ft³ (86 L)
Qtc0.87
Fc43 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)31 1/2″ × 17 5/16″ × 13″
Open sealed box in designer

Ported

Net volume5.12 ft³ (145 L)
Tuning (Fb)31 Hz
Portslot 1 3/4 × 15 7/8″, 10 15/16″ long
Port velocity at 300 W64 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 17 5/16″ × 21 3/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25 Hz
Qts0.50
Qes0.55
Qms6.08
Vas6.04 ft³
Re (one coil)1.92 Ω
Sd132.5 in²
Xmax0.33″
Vd44.3 in³ calc.
Mms245 g calc.
BL11.6 T·m calc.
EBP45 — suits sealed calc.
Sensitivity, 1 W / 1 m88.9 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power300 W

Mounting dimensions

Ø15 1/16″cutout Ø13 7/16″mounting depth 5 5/8″magnet Ø≈ 8 3/4″
Cutout diameter13 7/16″
Mounting depth5 5/8″
Overall diameter15 1/16″

“≈” 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 JBL 15″ models