Alpine SWR-1023D (Type-R)

10″ subwoofer · dual 2 Ω · 600 W RMS

Fs 29 HzQts 0.50Vas 0.92 ft³Xmax 0.79″

Recommended box

For a sedan, one sub, 600 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 volume0.60 ft³ (17 L)
Qtc0.79
Fc46 Hz
F3 (−3 dB, no cabin gain)44 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 11 1/4″
Open sealed box in designer

Ported

Net volume1.87 ft³ (53 L)
Tuning (Fb)26 Hz
Portslot 1 9/16 × 14 5/16″, 43 3/4″ long
Port velocity at 600 W73 ft/s
F3 (−3 dB, no cabin gain)23 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 5/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs29 Hz
Qts0.50
Qes0.53
Qms8.7
Vas0.92 ft³
Re (one coil)1.85 Ω
Sd51.5 in²
Xmax0.79″
Vd40.5 in³ calc.
Mms181 g calc.
BL10.7 T·m calc.
EBP55 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.8 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power600 W

Mounting dimensions

Ø10 11/16″cutout Ø9 1/8″mounting depth 5 7/8″magnet Ø≈ 5 15/16″
Cutout diameter9 1/8″
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