Rockford Fosgate Punch XLC RFP-1415 (1996)

15″ subwoofer · 4 Ω · 200 W RMS

Fs 21 HzQts 0.36Vas 14.34 ft³Xmax 0.31″

Recommended box

For a sedan, one sub, 200 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 volume3.04 ft³ (86 L)
Qtc0.86
Fc50 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 12 1/2″
Open sealed box in designer

Ported

Net volume5.16 ft³ (146 L)
Tuning (Fb)33 Hz
Portslot 1 9/16 × 16 11/16″, 8 1/4″ long
Port velocity at 200 W54 ft/s
F3 (−3 dB, no cabin gain)33 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 20 3/8″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs21 Hz
Qts0.36
Qes0.38
Qms6.24
Vas14.34 ft³
Re3.6 Ω
Sd133.3 in²
Xmax0.31″
Vd42 in³ calc.
Mms148 g calc.
BL13.6 T·m calc.
EBP55 — sealed or ported calc.
Sensitivity, 1 W / 1 m92 dB calc.

General

Size15″
Voice coils4 Ω
RMS power200 W

Mounting dimensions

Ø15 3/16″cutout Ø14″mounting depth 6 7/8″magnet Ø≈ 9 1/8″
Cutout diameter14″
Mounting depth6 7/8″
Overall diameter15 3/16″

“≈” 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 15″ models