Magnum MPW 15-4DC

15″ subwoofer · 4 Ω · 500 W RMS

Fs 44.1 HzQts 0.26Vas 4.84 ft³

Recommended box

For a sedan, one sub, 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 volume1.20 ft³ (34 L)
Qtc0.58
Fc99 Hz
F3 (−3 dB, no cabin gain)131 Hz
Example box (outside)16 15/16″ × 16 15/16″ × 11 5/16″
Open sealed box in designer

Ported

Net volume2.47 ft³ (70 L)
Tuning (Fb)50 Hz
Portslot 2 3/16 × 16 5/16″, 10 3/8″ long
Port velocity at 500 W61 ft/s
F3 (−3 dB, no cabin gain)76 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 11 5/8″
Open ported box in designer
2030405060801001502007278849096102HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs44.1 Hz
Qts0.26
Qes0.265
Qms10.34
Vas4.84 ft³
Re≈ 3.4 Ω
Sd130 in²
Xmax≈ 0.39″
Mms95 g calc.
BL18.3 T·m calc.
EBP166 — suits ported calc.
Sensitivity, 1 W / 1 m98.5 dB calc.

General

Size15″
Voice coils4 Ω
RMS power500 W

Mounting dimensions

Ø15 1/4″cutout ≈ Ø13 3/4″mounting depth 5 7/8″magnet Ø≈ 8 15/16″
Cutout diameter≈ 13 3/4″
Mounting depth5 7/8″
Overall diameter15 1/4″

Cone area (Sd) calculated from Fs, Vas and Mms: 130 in².

“≈” 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 Magnum 15″ models