Audio System X12 EVO

12″ subwoofer · dual 2 Ω · 1,000 W RMS

Fs 27.9 HzQts 0.37Vas 1.48 ft³Xmax 1.18″

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 volume0.71 ft³ (20 L)
Qtc0.64
Fc49 Hz
F3 (−3 dB, no cabin gain)57 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 9 9/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)30 Hz
Portslot 1 9/16 × 14 5/16″, 42 3/8″ long
Port velocity at 1,000 W84 ft/s
F3 (−3 dB, no cabin gain)29 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 10 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27.9 Hz
Qts0.37
Qes0.39
Qms5.75
Vas1.48 ft³
Re (one coil)1.9 Ω
Sd76 in²
Xmax1.18″
Vd89.7 in³ calc.
Mms265 g calc.
BL15 T·m calc.
EBP72 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.7 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,000 W

Mounting dimensions

Ø12 5/16″cutout Ø11 1/4″mounting depth 7 1/16″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth7 1/16″
Overall diameter12 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 Audio System 12″ models