MTX Audio 5515-22

15″ subwoofer · dual 2 Ω · 400 W RMS

Fs 25 HzQts 0.81Vas 5.69 ft³Xmax 0.60″

Recommended box

For a sedan, one sub, 400 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 volume3.25 ft³ (92 L)
Qtc1.35
Fc41 Hz
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 13 1/2″
Open sealed box in designer

Ported

Net volume5.51 ft³ (156 L)
Tuning (Fb)33 Hz
Portslot 1 3/4 × 16 5/16″, 8 7/16″ long
Port velocity at 400 W65 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 22 1/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25 Hz
Qts0.81
Qes1.13
Qms2.89
Vas5.69 ft³
Re (one coil)1.78 Ω
Sd142.4 in²
Xmax0.60″
Vd85.2 in³ calc.
Mms301 g calc.
BL8.6 T·m calc.
EBP22 — suits sealed calc.
Sensitivity, 1 W / 1 m85.5 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power400 W

Mounting dimensions

Ø15 7/16″cutout Ø13 7/8″mounting depth 7 15/16″magnet Ø≈ 9″
Cutout diameter13 7/8″
Mounting depth7 15/16″
Overall diameter15 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 15″ models