MTX Audio 7515-22

15″ subwoofer · dual 2 Ω · 750 W RMS

Fs 26 HzQts 0.59Vas 5.11 ft³Xmax 0.66″

Recommended box

For a sedan, one sub, 750 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 volume3.18 ft³ (90 L)
Qtc0.95
Fc42 Hz
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 12 15/16″
Open sealed box in designer

Ported

Net volume5.40 ft³ (153 L)
Tuning (Fb)31 Hz
Portslot 2 3/4 × 16 11/16″, 18 1/16″ long
Port velocity at 750 W63 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 22 5/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26 Hz
Qts0.59
Qes0.66
Qms5.61
Vas5.11 ft³
Re (one coil)1.6 Ω
Sd139.4 in²
Xmax0.66″
Vd92.2 in³ calc.
Mms297 g calc.
BL10.8 T·m calc.
EBP39 — suits sealed calc.
Sensitivity, 1 W / 1 m87.9 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power750 W

Mounting dimensions

Ø15 1/2″cutout Ø14 1/16″mounting depth 8 5/16″magnet Ø≈ 9 1/8″
Cutout diameter14 1/16″
Mounting depth8 5/16″
Overall diameter15 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 15″ models