RE Audio SEX12 D2 v2

12″ subwoofer · dual 2 Ω · 750 W RMS

Fs 38.2 HzQts 0.69Vas 1.05 ft³

Recommended box

For a sedan, one sub, 750 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 volume1.73 ft³ (49 L)
Qtc0.88
Fc48 Hz
F3 (−3 dB, no cabin gain)42 Hz
Example box (outside)14 3/16″ × 14 3/16″ × 20 15/16″
Open sealed box in designer

Ported

Net volume2.93 ft³ (83 L)
Tuning (Fb)32 Hz
Portslot 2 3/4 × 14 5/16″, 30″ long
Port velocity at 750 W63 ft/s
F3 (−3 dB, no cabin gain)27 Hz
Example box (outside)31 1/2″ × 15 3/4″ × 16 7/8″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs38.2 Hz
Qts0.69
Qes0.781
Qms6.11
Vas1.05 ft³
Re (one coil)2.02 Ω
Sd76.1 in²
Xmax≈ 0.39″
Mms199 g calc.
BL11.1 T·m calc.
EBP49 — suits sealed calc.
Sensitivity, 1 W / 1 m85.3 dB calc.

General

Size12″
Voice coilsdual 2 Ω
RMS power750 W

Mounting dimensions

Ø12 1/2″cutout Ø11 3/16″mounting depth 6 1/2″magnet Ø≈ 7 1/4″
Cutout diameter11 3/16″
Mounting depth6 1/2″
Overall diameter12 1/2″

“≈” 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