Alpine SWS-10D4 (Type-S)

10″ subwoofer · dual 4 Ω · 500 W RMS

Fs 35 HzQts 0.46Vas 0.88 ft³Xmax 0.59″

Recommended box

For a sedan, one sub, 500 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 volume0.46 ft³ (13 L)
Qtc0.79
Fc60 Hz
F3 (−3 dB, no cabin gain)57 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 9 3/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)32 Hz
Portslot 1 9/16 × 14 5/16″, 36 3/4″ long
Port velocity at 500 W63 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 10 1/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs35 Hz
Qts0.46
Qes0.49
Qms8.65
Vas0.88 ft³
Re (one coil)3.5 Ω
Sd51.6 in²
Xmax0.59″
Vd30.5 in³ calc.
Mms130 g calc.
BL14.3 T·m calc.
EBP71 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.4 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power500 W

Mounting dimensions

Ø10 11/16″cutout Ø8 7/8″mounting depth 5 9/16″magnet Ø≈ 5 13/16″
Cutout diameter8 7/8″
Mounting depth5 9/16″
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