Alpine R2-W10D2

10″ subwoofer · dual 2 Ω · 750 W RMS

Fs 31 HzQts 0.47Vas 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 volume	0.48 ft³ (13.5 L)
Qtc	0.72
Fc	48 Hz
F3 (−3 dB, no cabin gain)	49 Hz
Example box (outside)	13″ × 13″ × 8 3/8″

Open sealed box in designer

Ported

Net volume	1.09 ft³ (31 L)
Tuning (Fb)	29 Hz
Port	round port Ø3″, 18 1/4″ long
Port velocity at 750 W	210 ft/s
F3 (−3 dB, no cabin gain)	26 Hz
Example box (outside)	23 1/8″ × 15 3/4″ × 8 7/16″

Open ported box in designer

Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs	31 Hz
Qts	0.47
Qes	0.5
Qms	7.07
Vas	0.64 ft³
Re (one coil)	1.9 Ω
Sd	51.6 in²
Xmax	0.79″
Vd	40.6 in³ calc.
Mms	227 g calc.
BL	13 T·m calc.
EBP	62 — sealed or ported calc.
Sensitivity, 1 W / 1 m	82.4 dB calc.

General

Size	10″
Voice coils	dual 2 Ω
RMS power	750 W

Mounting dimensions

Cutout diameter	≈ 9 5/8″
Mounting depth	5 7/8″
Overall diameter	10 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

manuals.alpine-usa.com/products/documents/OM_R2-SUBS.pdf

Other Alpine 10″ models

Alpine R-W10D2 10″ · dual 2 Ω
Alpine R-W10D4 10″ · dual 4 Ω
Alpine R2-W10D4 10″ · dual 4 Ω
Alpine RS-W10D2 (R-Series shallow) 10″ · dual 2 Ω
Alpine RS-W10D4 (R-Series shallow) 10″ · dual 4 Ω
Alpine S-W10D2 10″ · dual 2 Ω
Alpine S-W10D4 10″ · dual 4 Ω
Alpine S2-W10D2 10″ · dual 2 Ω
Alpine S2-W10D4 10″ · dual 4 Ω
Alpine SWA-10S4 (Atom) 10″ · 4 Ω
Alpine SWE-1044E (Type-E) 10″ · 4 Ω
Alpine SWG-1044 (Type-G) 10″ · 4 Ω