Rockford Fosgate Punch Z RFZ3810

10″ subwoofer · 8 Ω · 150 W RMS

Fs 27 HzQts 0.49Vas 2.65 ft³Xmax 0.30″

Recommended box

For a sedan, one sub, 150 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 volume1.24 ft³ (35 L)
Qtc0.87
Fc48 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 19 3/8″
Open sealed box in designer

Ported

Net volume2.08 ft³ (59 L)
Tuning (Fb)34 Hz
Portslot 1 9/16 × 14 5/16″, 21 1/8″ long
Port velocity at 150 W37 ft/s
F3 (−3 dB, no cabin gain)31 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 1/2″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs27 Hz
Qts0.49
Qes0.54
Qms5.12
Vas2.65 ft³
Re7.5 Ω
Sd53.9 in²
Xmax0.30″
Vd16.4 in³ calc.
Mms79 g calc.
BL13.7 T·m calc.
EBP50 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.4 dB calc.

General

Size10″
Voice coils8 Ω
RMS power150 W

Mounting dimensions

Ø≈ 10 1/2″cutout Ø9 5/16″mounting depth 4 13/16″magnet Ø≈ 6 1/16″
Cutout diameter9 5/16″
Mounting depth4 13/16″

“≈” 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