MTX Audio T5512-04

12″ subwoofer · 4 Ω · 300 W RMS

Fs 29.3 HzQts 0.58Vas 2.36 ft³Xmax 0.53″

Recommended box

For a sedan, one sub, 300 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 volume1.94 ft³ (55 L)
Qtc0.87
Fc44 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 5/8″
Open sealed box in designer

Ported

Net volume3.28 ft³ (93 L)
Tuning (Fb)31 Hz
Portslot 1 9/16 × 14 5/16″, 15 3/16″ long
Port velocity at 300 W65 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 1/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.3 Hz
Qts0.58
Qes0.67
Qms4.48
Vas2.36 ft³
Re3.3 Ω
Sd84.5 in²
Xmax0.53″
Vd44.9 in³ calc.
Mms186 g calc.
BL13 T·m calc.
EBP44 — suits sealed calc.
Sensitivity, 1 W / 1 m86 dB calc.

General

Size12″
Voice coils4 Ω
RMS power300 W

Mounting dimensions

Ø12 5/8″cutout Ø11 1/16″mounting depth 6 5/8″magnet Ø≈ 7 3/16″
Cutout diameter11 1/16″
Mounting depth6 5/8″
Overall diameter12 5/8″

“≈” 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