Focal Performance Sub P 27 V2 (DVC 4+4 ohm)

11″ subwoofer · dual 4 Ω · 300 W RMS

Fs 38.5 HzQts 0.63Vas 0.75 ft³Xmax 0.43″

Recommended box

For a sedan, one sub, 300 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 volume1.20 ft³ (34 L)
Qtc0.80
Fc49 Hz
F3 (−3 dB, no cabin gain)46 Hz
Example box (outside)12 3/16″ × 12 3/16″ × 20 3/16″
Open sealed box in designer

Ported

Net volume2.01 ft³ (57 L)
Tuning (Fb)32 Hz
Portslot 1 9/16 × 14 5/16″, 25 5/16″ long
Port velocity at 300 W58 ft/s
F3 (−3 dB, no cabin gain)28 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 11 9/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.5 Hz
Qts0.63
Qes0.71
Qms5.52
Vas0.75 ft³
Re (one coil)4.2 Ω
Sd52.2 in²
Xmax0.43″
Vd22.6 in³ calc.
Mms128 g calc.
BL13.6 T·m calc.
EBP54 — sealed or ported calc.
Sensitivity, 1 W / 1 m84.4 dB calc.

General

Size11″
Voice coilsdual 4 Ω
RMS power300 W

Mounting dimensions

Ø≈ 10 5/16″cutout ≈ Ø9 1/8″mounting depth ≈ 5 1/8″magnet Ø≈ 5 15/16″
Cutout diameter≈ 9 1/8″
Mounting depth≈ 5 1/8″

Judging by its value, the published Re is for both coils in parallel — converted to per coil.

“≈” 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 11″ models