Alpine R2-W10D4

10″ subwoofer · dual 4 Ω · 750 W RMS

Fs 32 HzQts 0.48Vas 0.64 ft³Xmax 0.79″

Recommended box

For a sedan, one sub, 750 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 volume0.48 ft³ (13.5 L)
Qtc0.74
Fc49 Hz
F3 (−3 dB, no cabin gain)49 Hz
Example box (outside)13″ × 13″ × 8 3/8″
Open sealed box in designer

Ported

Net volume1.20 ft³ (34 L)
Tuning (Fb)29 Hz
Port2 round ports Ø2 1/2″, 24 9/16″ long
Port velocity at 750 W156 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)26 1/4″ × 15 3/4″ × 8 7/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32 Hz
Qts0.48
Qes0.52
Qms6.5
Vas0.64 ft³
Re (one coil)3.5 Ω
Sd51.6 in²
Xmax0.79″
Vd40.6 in³ calc.
Mms213 g calc.
BL17 T·m calc.
EBP62 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.6 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power750 W

Mounting dimensions

Ø10 11/16″cutout ≈ Ø9 5/8″mounting depth 5 7/8″magnet Ø≈ 6 1/4″
Cutout diameter≈ 9 5/8″
Mounting depth5 7/8″
Overall diameter10 11/16″

“≈” 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 Alpine 10″ models