JBL GTO1514D

15″ subwoofer · dual 4 Ω · 350 W RMS

Fs 24.9 HzQts 0.48Vas 5.70 ft³Xmax 0.57″

Recommended box

For a sedan, one sub, 350 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 volume2.93 ft³ (83 L)
Qtc0.82
Fc43 Hz
F3 (−3 dB, no cabin gain)40 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12 3/8″
Open sealed box in designer

Ported

Net volume4.98 ft³ (141 L)
Tuning (Fb)30 Hz
Portslot 1 15/16 × 16 5/16″, 14 7/16″ long
Port velocity at 350 W60 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 20 13/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs24.9 Hz
Qts0.48
Qes0.51
Qms7.15
Vas5.70 ft³
Re (one coil)3.8 Ω
Sd128.7 in²
Xmax0.57″
Vd73.4 in³ calc.
Mms247 g calc.
BL17 T·m calc.
EBP49 — suits sealed calc.
Sensitivity, 1 W / 1 m88.9 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power350 W

Mounting dimensions

Ø15 5/16″cutout Ø13 15/16″mounting depth 6 3/4″magnet Ø≈ 9 1/16″
Cutout diameter13 15/16″
Mounting depth6 3/4″
Overall diameter15 5/16″

“≈” 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