JL Audio 12W0-8

12″ subwoofer · 8 Ω · 125 W RMS

Fs 23.2 HzQts 0.43Vas 5.65 ft³Xmax 0.34″

Recommended box

For a sedan, one sub, 125 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 volume1.87 ft³ (53 L)
Qtc0.85
Fc47 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 3/8″
Open sealed box in designer

Ported

Net volume3.18 ft³ (90 L)
Tuning (Fb)32 Hz
Portslot 1 9/16 × 14 5/16″, 14 5/8″ long
Port velocity at 125 W40 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 9/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs23.2 Hz
Qts0.43
Qes0.447
Qms8.97
Vas5.65 ft³
Re6.43 Ω
Sd82.3 in²
Xmax0.34″
Vd27.9 in³ calc.
Mms117 g calc.
BL15.7 T·m calc.
EBP52 — sealed or ported calc.
Sensitivity, 1 W / 1 m88.5 dB calc.

General

Size12″
Voice coils8 Ω
RMS power125 W

Mounting dimensions

Ø≈ 12 3/16″cutout Ø11″mounting depth 6″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth6″

“≈” 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