CT Sounds BIO-10 D2

10″ subwoofer · dual 2 Ω · 400 W RMS

Fs 34.7 HzQts 0.55Vas 0.83 ft³Xmax 0.30″

Recommended box

For a sedan, one sub, 400 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 volume0.74 ft³ (21 L)
Qtc0.80
Fc51 Hz
F3 (−3 dB, no cabin gain)47 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 13 3/8″
Open sealed box in designer

Ported

Net volume2.01 ft³ (57 L)
Tuning (Fb)29 Hz
Portslot 1 3/4 × 14 5/16″, 35 15/16″ long
Port velocity at 400 W58 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 12 9/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs34.7 Hz
Qts0.55
Qes0.609
Qms5.78
Vas0.83 ft³
Re (one coil)1.9 Ω
Sd52.2 in²
Xmax0.30″
Vd15.4 in³ calc.
Mms143 g calc.
BL9.9 T·m calc.
EBP57 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.1 dB calc.

General

Size10″
Voice coilsdual 2 Ω
RMS power400 W

Mounting dimensions

Ø10 5/16″cutout Ø9 1/8″mounting depth 4 11/16″magnet Ø≈ 5 15/16″
Cutout diameter9 1/8″
Mounting depth4 11/16″
Overall diameter10 5/16″

“≈” 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 CT Sounds 10″ models