Rockford Fosgate Power T0D215

15″ subwoofer · dual 2 Ω · 800 W RMS

Fs 25.5 HzQts 0.44Vas 3.33 ft³Xmax 0.55″

Recommended box

For a sedan, one sub, 800 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 volume1.41 ft³ (40 L)
Qtc0.80
Fc47 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)16 15/16″ × 16 15/16″ × 12 13/16″
Open sealed box in designer

Ported

Net volume4.70 ft³ (133 L)
Tuning (Fb)26 Hz
Portslot 2 3/4 × 16 5/16″, 32 5/16″ long
Port velocity at 800 W65 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 22 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25.5 Hz
Qts0.44
Qes0.47
Qms6.5
Vas3.33 ft³
Re (one coil)1.7 Ω
Sd131 in²
Xmax0.55″
Vd72.2 in³ calc.
Mms417 g calc.
BL15.6 T·m calc.
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.2 dB calc.

General

Size15″
Voice coilsdual 2 Ω
RMS power800 W

Mounting dimensions

Ø≈ 15 1/16″cutout Ø13 7/8″mounting depth 8 3/8″magnet Ø≈ 9 1/16″
Cutout diameter13 7/8″
Mounting depth8 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 15″ models