MTX Audio TR12-04

12″ subwoofer · 4 Ω · 200 W RMS

Fs 32 HzQts 0.69Vas 2.57 ft³Xmax 0.63″

Recommended box

For a sedan, one sub, 200 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 volume1.91 ft³ (54 L)
Qtc1.06
Fc49 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 1/2″
Open sealed box in designer

Ported

Net volume3.25 ft³ (92 L)
Tuning (Fb)36 Hz
Portslot 1 9/16 × 14 5/16″, 10 3/8″ long
Port velocity at 200 W53 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 5/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32 Hz
Qts0.69
Qes0.82
Qms4.54
Vas2.57 ft³
Re3.2 Ω
Sd83.6 in²
Xmax0.63″
Vd52.6 in³ calc.
Mms140 g calc.
BL10.5 T·m calc.
EBP39 — suits sealed calc.
Sensitivity, 1 W / 1 m86.6 dB calc.

General

Size12″
Voice coils4 Ω
RMS power200 W

Mounting dimensions

Ø12 1/2″cutout Ø11 1/8″mounting depth 5 3/8″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth5 3/8″
Overall diameter12 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 MTX Audio 12″ models