CT Sounds TROPO-10 D4

10″ subwoofer · dual 4 Ω · 650 W RMS

Fs 41.5 HzQts 0.62Vas 0.59 ft³Xmax 0.43″

Recommended box

For a sedan, one sub, 650 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 volume0.85 ft³ (24 L)
Qtc0.80
Fc54 Hz
F3 (−3 dB, no cabin gain)50 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 14 15/16″
Open sealed box in designer

Ported

Net volume2.19 ft³ (62 L)
Tuning (Fb)30 Hz
Portslot 2 3/8 × 14 5/16″, 41 1/8″ long
Port velocity at 650 W61 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 14 7/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs41.5 Hz
Qts0.62
Qes0.69
Qms5.67
Vas0.59 ft³
Re (one coil)3.66 Ω
Sd56.3 in²
Xmax0.43″
Vd24.4 in³ calc.
Mms164 g calc.
BL15.1 T·m calc.
EBP60 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.4 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power650 W

Mounting dimensions

Ø10 7/8″cutout Ø9″mounting depth 5 5/8″magnet Ø≈ 5 13/16″
Cutout diameter9″
Mounting depth5 5/8″
Overall diameter10 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 CT Sounds 10″ models