Sundown Audio SLD-10 D4

10″ subwoofer · dual 4 Ω · 600 W RMS

Fs 46.8 HzQts 0.44Vas 0.43 ft³Xmax 0.47″

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 volume0.49 ft³ (14 L)
Qtc0.60
Fc64 Hz
F3 (−3 dB, no cabin gain)80 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 9 1/8″
Open sealed box in designer

Ported

Net volume1.02 ft³ (29 L)
Tuning (Fb)37 Hz
Portslot 1 9/16 × 14 5/16″, 39 1/8″ long
Port velocity at 600 W62 ft/s
F3 (−3 dB, no cabin gain)34 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 9/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs46.8 Hz
Qts0.44
Qes0.547
Qms2.25
Vas0.43 ft³
Re (one coil)3.43 Ω
Sd53.8 in²
Xmax0.47″
Vd25.4 in³ calc.
Mms163 g calc.
BL17.3 T·m calc.
EBP86 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.6 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power600 W

Mounting dimensions

Ø10 1/2″cutout Ø9 7/16″mounting depth 4 7/8″magnet Ø7 3/8″
Cutout diameter9 7/16″
Mounting depth4 7/8″
Overall diameter10 1/2″
Magnet diameter7 3/8″

The spec sheet's Sd of 78.5 in² is the area of a 10″ circle, not the cone's radiating area — not used.

Cone area (Sd) calculated from Fs, Vas and Mms: 53.8 in².

“≈” 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 Sundown Audio 10″ models