CT Sounds TROPO-XL-10 D4

10″ subwoofer · dual 4 Ω · 1,000 W RMS

Fs 40.1 HzQts 0.51Vas 0.47 ft³Xmax 0.55″

Recommended box

For a sedan, one sub, 1,000 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 volume0.53 ft³ (15 L)
Qtc0.70
Fc55 Hz
F3 (−3 dB, no cabin gain)58 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 10 1/4″
Open sealed box in designer

Ported

Net volume1.09 ft³ (31 L)
Tuning (Fb)33 Hz
Port2 round ports Ø2 1/2″, 20 1/2″ long
Port velocity at 1,000 W186 ft/s
F3 (−3 dB, no cabin gain)30 Hz
Example box (outside)22 3/4″ × 15 3/4″ × 8 7/8″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs40.1 Hz
Qts0.51
Qes0.566
Qms4.86
Vas0.47 ft³
Re (one coil)3.4 Ω
Sd56.3 in²
Xmax0.55″
Vd31 in³ calc.
Mms219 g calc.
BL18.2 T·m calc.
EBP71 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.9 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power1,000 W

Mounting dimensions

Ø10 7/8″cutout Ø9″mounting depth 6 5/16″magnet Ø≈ 5 13/16″
Cutout diameter9″
Mounting depth6 5/16″
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