MTX Audio T6124

12″ subwoofer · 4 Ω · 250 W RMS

Fs 29.7 HzQts 0.66Vas 2.77 ft³Xmax 0.37″

Recommended box

For a sedan, one sub, 250 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)
Qtc1.03
Fc46 Hz
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 5/8″
Open sealed box in designer

Ported

Net volume3.32 ft³ (94 L)
Tuning (Fb)34 Hz
Portslot 1 9/16 × 14 5/16″, 11 13/16″ long
Port velocity at 250 W61 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29.7 Hz
Qts0.66
Qes0.73
Qms6.84
Vas2.77 ft³
Re3.28 Ω
Sd85.6 in²
Xmax0.37″
Vd31.7 in³ calc.
Mms158 g calc.
BL11.5 T·m calc.
EBP41 — suits sealed calc.
Sensitivity, 1 W / 1 m86.5 dB calc.

General

Size12″
Voice coils4 Ω
RMS power250 W

Mounting dimensions

Ø12 7/16″cutout Ø11″mounting depth 5 11/16″magnet Ø≈ 7 1/8″
Cutout diameter11″
Mounting depth5 11/16″
Overall diameter12 7/16″

“≈” 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