CT Sounds STRATO-8 D2

8″ subwoofer · dual 2 Ω · 600 W RMS

Fs 47.1 HzQts 0.89Vas 0.10 ft³Xmax 0.47″

Recommended box

For a sedan, one sub, 600 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 volume0.34 ft³ (9.5 L)
Qtc1.01
Fc53 Hz
F3 (−3 dB, no cabin gain)43 Hz
Example box (outside)10 5/8″ × 10 5/8″ × 8 15/16″
Open sealed box in designer

Ported

Net volume1.02 ft³ (29 L)
Tuning (Fb)25 Hz
Portround port Ø2 1/2″, 19″ long
Port velocity at 600 W243 ft/s
F3 (−3 dB, no cabin gain)22 Hz
Example box (outside)20 1/2″ × 15 3/4″ × 8 11/16″
Open ported box in designer
2030405060801001502005460667278HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs47.1 Hz
Qts0.89
Qes0.976
Qms9.65
Vas0.10 ft³
Re (one coil)2.14 Ω
Sd29.2 in²
Xmax0.47″
Vd13.8 in³ calc.
Mms209 g calc.
BL11.7 T·m calc.
EBP48 — suits sealed calc.
Sensitivity, 1 W / 1 m76.7 dB calc.

General

Size8″
Voice coilsdual 2 Ω
RMS power600 W

Mounting dimensions

Ø8 13/16″cutout Ø7 1/2″mounting depth 6 1/4″magnet Ø≈ 4 7/8″
Cutout diameter7 1/2″
Mounting depth6 1/4″
Overall diameter8 13/16″

“≈” 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 8″ models