Dayton Audio DCS305-4

12″ subwoofer · 4 Ω · 250 W RMS

Fs 24.2 HzQts 0.40Vas 3.26 ft³Xmax 0.37″

Recommended box

For a sedan, one sub, 250 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 volume1.06 ft³ (30 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 13 13/16″
Open sealed box in designer

Ported

Net volume3.00 ft³ (85 L)
Tuning (Fb)28 Hz
Portslot 1 9/16 × 14 5/16″, 21 11/16″ long
Port velocity at 250 W58 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 15 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs24.2 Hz
Qts0.40
Qes0.43
Qms5.07
Vas3.26 ft³
Re3.3 Ω
Sd77.3 in²
Xmax0.37″
Vd28.3 in³ calc.
Mms165 g calc.
BL13.9 T·m calc.
EBP56 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.8 dB calc.

General

Size12″
Voice coils4 Ω
RMS power250 W

Mounting dimensions

Ø12 1/16″cutout Ø10 13/16″mounting depth 6″magnet Ø≈ 7 1/16″
Cutout diameter10 13/16″
Mounting depth6″
Overall diameter12 1/16″

“≈” 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 Dayton Audio 12″ models