Pride M.45 15 D0.75 (M45.15D07)

15″ subwoofer · dual 0.75 Ω · 4,500 W RMS

Fs 26.4 HzQts 0.24Vas 3.10 ft³Xmax 1.42″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 4,500 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 volume1.64 ft³ (46.5 L)
Qtc0.40
Fc45 Hz
F3 (−3 dB, no cabin gain)96 Hz
Example box (outside)17 11/16″ × 17 11/16″ × 13 1/4″
Open sealed box in designer

Ported

Net volume2.51 ft³ (71 L)
Tuning (Fb)29 Hz
Portslot 2 9/16 × 17 1/16″, 49 15/16″ long
Port velocity at 4,500 W127 ft/s
F3 (−3 dB, no cabin gain)75 Hz
Example box (outside)31 1/2″ × 18 1/2″ × 15 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.4 Hz
Qts0.24
Qes0.251
Qms3.88
Vas3.10 ft³
Re (one coil)0.75 Ω
Sd130.2 in²
Xmax1.42″
Vd184.5 in³ calc.
Mms413 g calc.
BL14.3 T·m calc.
EBP105 — suits ported calc.
Sensitivity, 1 W / 1 m90.1 dB calc.

General

Size15″
Voice coilsdual 0.75 Ω
RMS power4,500 W

Mounting dimensions

Ø15 5/8″cutout Ø14 3/8″mounting depth 10 13/16″magnet Ø10 1/16″
Cutout diameter14 3/8″
Mounting depth10 13/16″
Overall diameter15 5/8″
Magnet diameter10 1/16″

“≈” 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 Pride 15″ models