PSI Platform 2 12 D2

12″ subwoofer · dual 2 Ω · 1,500 W RMS

Fs 31.3 HzQts 0.51Vas 1.38 ft³Xmax 1.10″

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 volume0.99 ft³ (28 L)
Qtc0.80
Fc48 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 13 1/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)27 Hz
Portslot 3 9/16 × 14 5/16″, 57 5/8″ long
Port velocity at 1,500 W64 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 21 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs31.3 Hz
Qts0.51
Qes0.56
Qms6.33
Vas1.38 ft³
Re (one coil)1.95 Ω
Sd76 in²
Xmax1.10″
Vd83.7 in³ calc.
Mms224 g calc.
BL12.4 T·m calc.
EBP56 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.3 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power1,500 W

Mounting dimensions

Ø12 1/2″cutout Ø11 1/8″mounting depth 6 1/2″magnet Ø≈ 7 1/4″
Cutout diameter11 1/8″
Mounting depth6 1/2″
Overall diameter12 1/2″

Judging by its value, the published Re is for both coils in series — converted to per coil.

“≈” 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