Rockford Fosgate Punch P2D2-12

12″ subwoofer · dual 2 Ω · 400 W RMS

Fs 26 HzQts 0.52Vas 2.88 ft³Xmax 0.52″

Recommended box

For a sedan, one sub, 400 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 volume2.01 ft³ (57 L)
Qtc0.80
Fc41 Hz
F3 (−3 dB, no cabin gain)38 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 9 15/16″
Open sealed box in designer

Ported

Net volume3.43 ft³ (97 L)
Tuning (Fb)28 Hz
Portslot 1 15/16 × 14 5/16″, 23 11/16″ long
Port velocity at 400 W61 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 17 9/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26 Hz
Qts0.52
Qes0.56
Qms6.5
Vas2.88 ft³
Re (one coil)1.65 Ω
Sd88.4 in²
Xmax0.52″
Vd46.3 in³ calc.
Mms212 g calc.
BL10.1 T·m calc.
EBP46 — suits sealed calc.
Sensitivity, 1 W / 1 m86.1 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power400 W

Mounting dimensions

Ø≈ 12 3/8″cutout Ø11 1/4″mounting depth 6 3/8″magnet Ø≈ 7 5/16″
Cutout diameter11 1/4″
Mounting depth6 3/8″

“≈” 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 Rockford Fosgate 12″ models