PSI Platform 3 12

12″ subwoofer · DVC · 2,500 W RMS

Fs 32.7 HzQts 0.24Vas 1.30 ft³Xmax 1.18″

Recommended box

For a sedan, one sub, 2,500 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 volume0.71 ft³ (20 L)
Qtc0.40
Fc55 Hz
F3 (−3 dB, no cabin gain)117 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)31 Hz
Portslot 1 3/4 × 14 5/16″, 44 5/8″ long
Port velocity at 2,500 W132 ft/s
F3 (−3 dB, no cabin gain)103 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.7 Hz
Qts0.24
Qes0.25
Qms5.77
Vas1.30 ft³
Re (one coil)3.9 Ω
Sd76 in²
Xmax1.18″
Vd89.7 in³ calc.
Mms220 g calc.
BL26.5 T·m calc.
EBP131 — suits ported calc.
Sensitivity, 1 W / 1 m89.1 dB calc.

General

Size12″
Voice coilsDVC
RMS power2,500 W

Mounting dimensions

Ø12 1/2″cutout Ø11 1/8″mounting depth 7 1/2″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth7 1/2″
Overall diameter12 1/2″

“≈” 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 PSI 12″ models