Dayton Audio DCS385-4

15″ subwoofer · 4 Ω · 300 W RMS

Fs 17.5 HzQts 0.39Vas 10.98 ft³Xmax 0.37″

Recommended box

For a sedan, one sub, 300 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 volume3.00 ft³ (85 L)
Qtc0.84
Fc38 Hz
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 12 5/8″
Open sealed box in designer

Ported

Net volume5.12 ft³ (145 L)
Tuning (Fb)26 Hz
Portslot 1 9/16 × 16 5/16″, 15 5/8″ long
Port velocity at 300 W61 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)31 1/2″ × 17 11/16″ × 21 1/4″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs17.5 Hz
Qts0.39
Qes0.42
Qms5.27
Vas10.98 ft³
Re3.3 Ω
Sd131.8 in²
Xmax0.37″
Vd48.2 in³ calc.
Mms272 g calc.
BL15.3 T·m calc.
EBP42 — suits sealed calc.
Sensitivity, 1 W / 1 m88 dB calc.

General

Size15″
Voice coils4 Ω
RMS power300 W

Mounting dimensions

Ø15 1/4″cutout Ø13 3/4″mounting depth 7 5/16″magnet Ø≈ 8 15/16″
Cutout diameter13 3/4″
Mounting depth7 5/16″
Overall diameter15 1/4″

“≈” 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 Dayton Audio 15″ models