ESX QE1524 (2x4 Ohm)

15″ subwoofer · dual 4 Ω · 1,000 W RMS

Fs 36 HzQts 0.49Vas 3.57 ft³Xmax 0.52″

Recommended box

For a sedan, one sub, 1,000 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 volume2.12 ft³ (60 L)
Qtc0.80
Fc59 Hz
F3 (−3 dB, no cabin gain)56 Hz
Example box (outside)16 15/16″ × 16 15/16″ × 17 7/8″
Open sealed box in designer

Ported

Net volume4.98 ft³ (141 L)
Tuning (Fb)36 Hz
Portslot 3 9/16 × 16 5/16″, 17 5/8″ long
Port velocity at 1,000 W64 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 22″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.49
Qes0.56
Qms3.86
Vas3.57 ft³
Re (one coil)3.6 Ω
Sd128.7 in²
Xmax0.52″
Vd67.4 in³ calc.
Mms189 g calc.
BL16.6 T·m calc.
EBP64 — sealed or ported calc.
Sensitivity, 1 W / 1 m91.3 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,000 W

Mounting dimensions

Ø15 1/2″cutout Ø13 15/16″mounting depth 7 3/16″magnet Ø≈ 9 1/16″
Cutout diameter13 15/16″
Mounting depth7 3/16″
Overall diameter15 1/2″

“≈” 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 ESX 15″ models