Focal SUB 10 DUAL (DVC 4+4 ohm)

10″ subwoofer · dual 4 Ω · 250 W RMS

Fs 25 HzQts 0.65Vas 1.73 ft³

Recommended box

For a sedan, one sub, 250 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 volume1.09 ft³ (31 L)
Qtc1.05
Fc40 Hz
F3 (−3 dB, no cabin gain)32 Hz
Example box (outside)12 5/8″ × 12 5/8″ × 17 7/16″
Open sealed box in designer

Ported

Net volume1.87 ft³ (53 L)
Tuning (Fb)30 Hz
Portslot 1 9/16 × 14 5/16″, 31 7/8″ long
Port velocity at 250 W42 ft/s
F3 (−3 dB, no cabin gain)26 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 1/2″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs25 Hz
Qts0.65
Qes0.748
Qms5.21
Vas1.73 ft³
Re (one coil)3.5 Ω
Sd48.7 in²
Xmax≈ 0.39″
Mms116 g calc.
BL9.2 T·m calc.
EBP33 — suits sealed calc.
Sensitivity, 1 W / 1 m82.1 dB calc.

General

Size10″
Voice coilsdual 4 Ω
RMS power250 W

Mounting dimensions

Ø10 11/16″cutout Ø9 5/16″mounting depth 4 3/8″magnet Ø≈ 6 1/16″
Cutout diameter9 5/16″
Mounting depth4 3/8″
Overall diameter10 11/16″

“≈” 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 Focal 10″ models