Rockford Fosgate Punch P1S2-10

10″ subwoofer · 2 Ω · 250 W RMS

Fs 30 HzQts 0.59Vas 1.25 ft³Xmax 0.35″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 250 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 volume1.31 ft³ (37 L)
Qtc0.82
Fc42 Hz
F3 (−3 dB, no cabin gain)39 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 21 3/4″
Open sealed box in designer

Ported

Net volume2.22 ft³ (63 L)
Tuning (Fb)29 Hz
Portslot 1 9/16 × 14 5/16″, 28 5/16″ long
Port velocity at 250 W48 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs30 Hz
Qts0.59
Qes0.75
Qms2.7
Vas1.25 ft³
Re1.6 Ω
Sd57.4 in²
Xmax0.35″
Vd20.3 in³ calc.
Mms154 g calc.
BL7.9 T·m calc.
EBP40 — suits sealed calc.
Sensitivity, 1 W / 1 m83.1 dB calc.

General

Size10″
Voice coils2 Ω
RMS power250 W

Mounting dimensions

Ø≈ 10 5/16″cutout Ø9 1/8″mounting depth 5 5/16″magnet Ø≈ 5 15/16″
Cutout diameter9 1/8″
Mounting depth5 5/16″

“≈” 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 Rockford Fosgate 10″ models