Dayton Audio SD270A-88

10″ subwoofer · dual 8 Ω · 80 W RMS

Fs 26.2 HzQts 0.43Vas 3.80 ft³Xmax 0.24″

Recommended box

For a sedan, one sub, 80 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 volume1.24 ft³ (35 L)
Qtc0.87
Fc53 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 20 11/16″
Open sealed box in designer

Ported

Net volume2.08 ft³ (59 L)
Tuning (Fb)36 Hz
Portslot 1 9/16 × 14 5/16″, 18 7/16″ long
Port velocity at 80 W26 ft/s
F3 (−3 dB, no cabin gain)35 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 5/16″
Open ported box in designer
203040506080100150200667278849096HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.2 Hz
Qts0.43
Qes0.5
Qms3.23
Vas3.80 ft³
Re (one coil)6.32 Ω
Sd53.7 in²
Xmax0.24″
Vd12.7 in³ calc.
Mms58 g calc.
BL11 T·m calc.
EBP52 — sealed or ported calc.
Sensitivity, 1 W / 1 m87.9 dB calc.

General

Size10″
Voice coilsdual 8 Ω
RMS power80 W

Mounting dimensions

Ø10 5/8″cutout Ø8 15/16″mounting depth 4 5/16″magnet Ø≈ 5 13/16″
Cutout diameter8 15/16″
Mounting depth4 5/16″
Overall diameter10 5/8″

“≈” 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 10″ models