Pride M.9 12 (table: Re 0.4, SVC)

12″ subwoofer · 900 W RMS

Fs 32.8 HzQts 0.61Vas 1.12 ft³Xmax 0.67″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 900 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 volume1.55 ft³ (44 L)
Qtc0.80
Fc43 Hz
F3 (−3 dB, no cabin gain)40 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 19 1/16″
Open sealed box in designer

Ported

Net volume2.79 ft³ (79 L)
Tuning (Fb)28 Hz
Portslot 2 3/4 × 14 5/16″, 43 1/16″ long
Port velocity at 900 W64 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 3/4″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.8 Hz
Qts0.61
Qes0.69
Qms5.26
Vas1.12 ft³
Re0.4 Ω
Sd72.1 in²
Xmax0.67″
Vd48.2 in³ calc.
Mms227 g calc.
BL5.2 T·m calc.
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size12″
Voice coils—
RMS power900 W

Mounting dimensions

Ø12 7/16″cutout Ø11″mounting depth 6″magnet Ø6 1/8″
Cutout diameter11″
Mounting depth6″
Overall diameter12 7/16″
Magnet diameter6 1/8″

“≈” 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 12″ models