RE Audio XX12 D4 v2

12″ subwoofer · dual 4 Ω · 1,500 W RMS

Fs 26.1 HzQts 0.39Vas 1.15 ft³

Recommended box

For a sedan, one sub, 1,500 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 volume1.06 ft³ (30 L)
Qtc0.57
Fc38 Hz
F3 (−3 dB, no cabin gain)51 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 13 1/16″
Open sealed box in designer

Ported

Net volume1.45 ft³ (41 L)
Tuning (Fb)27 Hz
Portround port Ø2 1/2″, 10 13/16″ long
Port velocity at 1,500 W451 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)18 3/16″ × 15 3/4″ × 13″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs26.1 Hz
Qts0.39
Qes0.421
Qms6.08
Vas1.15 ft³
Re (one coil)3.04 Ω
Sd74.9 in²
Xmax≈ 0.39″
Mms376 g calc.
BL21.1 T·m calc.
EBP62 — sealed or ported calc.
Sensitivity, 1 W / 1 m83.4 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,500 W

Mounting dimensions

Ø13″cutout Ø11 1/2″mounting depth 10 1/2″magnet Ø≈ 7 1/2″
Cutout diameter11 1/2″
Mounting depth10 1/2″
Overall diameter13″

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 RE Audio 12″ models