Dayton Audio PCS8-4

8″ subwoofer · 4 Ω · 150 W RMS

Fs 43 HzQts 0.49Vas 0.72 ft³Xmax 0.20″

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 volume0.42 ft³ (12 L)
Qtc0.81
Fc71 Hz
F3 (−3 dB, no cabin gain)67 Hz
Example box (outside)10 1/4″ × 10 1/4″ × 11 5/8″
Open sealed box in designer

Ported

Net volume1.27 ft³ (36 L)
Tuning (Fb)39 Hz
Portslot 1 9/16 × 14 5/16″, 27 1/4″ long
Port velocity at 150 W35 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 8 5/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs43 Hz
Qts0.49
Qes0.56
Qms3.96
Vas0.72 ft³
Re3.4 Ω
Sd33 in²
Xmax0.20″
Vd6.5 in³ calc.
Mms43 g calc.
BL8.4 T·m calc.
EBP77 — sealed or ported calc.
Sensitivity, 1 W / 1 m86.6 dB calc.

General

Size8″
Voice coils4 Ω
RMS power150 W

Mounting dimensions

Ø8 7/8″cutout Ø7″mounting depth 4″magnet Ø≈ 4 9/16″
Cutout diameter7″
Mounting depth4″
Overall diameter8 7/8″

“≈” 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