MTX Audio TR7512-22

12″ subwoofer · dual 2 Ω · 500 W RMS

Fs 30 HzQts 0.49Vas 1.74 ft³Xmax 0.63″

Recommended box

For a sedan, one sub, 500 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 volume1.06 ft³ (30 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 13 13/16″
Open sealed box in designer

Ported

Net volume3.14 ft³ (89 L)
Tuning (Fb)28 Hz
Portslot 2 3/16 × 14 5/16″, 29 1/16″ long
Port velocity at 500 W64 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30 Hz
Qts0.49
Qes0.55
Qms4.54
Vas1.74 ft³
Re (one coil)1.54 Ω
Sd81 in²
Xmax0.63″
Vd51 in³ calc.
Mms222 g calc.
BL10.8 T·m calc.
EBP55 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.8 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power500 W

Mounting dimensions

Ø12 11/16″cutout Ø11 1/8″mounting depth 7 11/16″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth7 11/16″
Overall diameter12 11/16″

“≈” 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 MTX Audio 12″ models