Massive Audio SUMMO154

15″ subwoofer · dual 4 Ω · 1,500 W RMS

Fs 35 HzQts 0.56Vas 2.01 ft³Xmax 0.51″

Recommended box

For a sedan, one sub, 1,500 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 volume1.98 ft³ (56 L)
Qtc0.80
Fc50 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)16 15/16″ × 16 15/16″ × 16 7/8″
Open sealed box in designer

Ported

Net volume4.84 ft³ (137 L)
Tuning (Fb)30 Hz
Portslot 4 5/16 × 16 5/16″, 36 3/8″ long
Port velocity at 1,500 W63 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 24 15/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35 Hz
Qts0.56
Qes0.635
Qms4.96
Vas2.01 ft³
Re (one coil)3.4 Ω
Sd124.6 in²
Xmax0.51″
Vd63.8 in³ calc.
Mms332 g calc.
BL19.8 T·m calc.
EBP55 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.9 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,500 W

Mounting dimensions

Ø15 9/16″cutout Ø13 3/4″mounting depth 8 9/16″magnet Ø≈ 8 15/16″
Cutout diameter13 3/4″
Mounting depth8 9/16″
Overall diameter15 9/16″

“≈” 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 Massive Audio 15″ models