Skar Audio EVL-12 D4

12″ subwoofer · dual 4 Ω · 1,250 W RMS

Fs 32.6 HzQts 0.50Vas 0.64 ft³Xmax 0.93″
The published specs don’t add up:

Recommended box

For a sedan, one sub, 1,250 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 volume0.76 ft³ (21.5 L)
Qtc0.68
Fc44 Hz
F3 (−3 dB, no cabin gain)48 Hz
Example box (outside)14 9/16″ × 14 9/16″ × 10 1/16″
Open sealed box in designer

Ported

Net volume1.41 ft³ (40 L)
Tuning (Fb)28 Hz
Port2 round ports Ø2 1/2″, 22 1/4″ long
Port velocity at 1,250 W217 ft/s
F3 (−3 dB, no cabin gain)25 Hz
Example box (outside)25 1/16″ × 15 3/4″ × 10 1/16″
Open ported box in designer
2030405060801001502006066727884HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs32.6 Hz
Qts0.50
Qes0.56
Qms5
Vas0.64 ft³
Re (one coil)≈ 3.4 Ω
Sd73.1 in²
Xmax0.93″
Vd67.6 in³ calc.
Mms412 g calc.
BL22.6 T·m calc.
EBP58 — sealed or ported calc.
Sensitivity, 1 W / 1 m82.5 dB calc.

General

Size12″
Voice coilsdual 4 Ω
RMS power1,250 W

Mounting dimensions

Ø12 1/2″cutout Ø11 1/4″mounting depth 7 5/8″magnet Ø7 1/16″
Cutout diameter11 1/4″
Mounting depth7 5/8″
Overall diameter12 1/2″
Magnet diameter7 1/16″

“≈” 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 Skar Audio 12″ models