JL Audio 12W7AE-3

12″ subwoofer · 3 Ω · 1,000 W RMS

Fs 27.2 HzQts 0.48Vas 2.33 ft³Xmax 1.14″

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 volume1.34 ft³ (38 L)
Qtc0.80
Fc45 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)13 3/4″ × 13 3/4″ × 17 13/16″
Open sealed box in designer

Ported

Net volume3.25 ft³ (92 L)
Tuning (Fb)28 Hz
Portslot 3 1/8 × 14 5/16″, 41 13/16″ long
Port velocity at 1,000 W62 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 20 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27.2 Hz
Qts0.48
Qes0.514
Qms7.81
Vas2.33 ft³
Re2.47 Ω
Sd84 in²
Xmax1.14″
Vd95.9 in³ calc.
Mms216 g calc.
BL13.3 T·m calc.
EBP53 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.1 dB calc.

General

Size12″
Voice coils3 Ω
RMS power1,000 W

Mounting dimensions

Ø12 1/2″cutout Ø10 1/2″mounting depth 9 1/2″magnet Ø7 1/2″
Cutout diameter10 1/2″
Mounting depth9 1/2″
Overall diameter12 1/2″
Magnet diameter7 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 JL Audio 12″ models