Dayton Audio DCS205-4

8″ subwoofer · 4 Ω · 150 W RMS

Fs 32.3 HzQts 0.38Vas 0.95 ft³Xmax 0.35″

Recommended box

For a sedan, one sub, 150 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 volume0.32 ft³ (9 L)
Qtc0.75
Fc65 Hz
F3 (−3 dB, no cabin gain)65 Hz
Example box (outside)10 1/4″ × 10 1/4″ × 9 1/4″
Open sealed box in designer

Ported

Net volume0.85 ft³ (24 L)
Tuning (Fb)36 Hz
Portround port Ø2 1/2″, 10 5/16″ long
Port velocity at 150 W121 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)22 15/16″ × 15 3/4″ × 6 11/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.3 Hz
Qts0.38
Qes0.4
Qms6.28
Vas0.95 ft³
Re3.9 Ω
Sd33.1 in²
Xmax0.35″
Vd11.5 in³ calc.
Mms58 g calc.
BL10.7 T·m calc.
EBP81 — sealed or ported calc.
Sensitivity, 1 W / 1 m85.6 dB calc.

General

Size8″
Voice coils4 Ω
RMS power150 W

Mounting dimensions

Ø8 3/16″cutout Ø7 1/16″mounting depth 4 1/4″magnet Ø≈ 4 5/8″
Cutout diameter7 1/16″
Mounting depth4 1/4″
Overall diameter8 3/16″

“≈” 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 8″ models