Skar Audio EVL-15 D4

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

Fs 36 HzQts 0.79Vas 1.46 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 volume2.75 ft³ (78 L)
Qtc0.98
Fc45 Hz
F3 (−3 dB, no cabin gain)36 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 11 1/2″
Open sealed box in designer

Ported

Net volume4.66 ft³ (132 L)
Tuning (Fb)29 Hz
Portslot 3 3/4 × 16 11/16″, 36 1/16″ long
Port velocity at 1,250 W63 ft/s
F3 (−3 dB, no cabin gain)24 Hz
Example box (outside)31 1/2″ × 18 1/8″ × 23 3/16″
Open ported box in designer
203040506080100150200606672788490HzdB
Sealed Ported · SPL in dB at 1 W / 1 m, no cabin gain

Thiele/Small parameters

Fs36 Hz
Qts0.79
Qes0.91
Qms6.09
Vas1.46 ft³
Re (one coil)≈ 3.4 Ω
Sd120.8 in²
Xmax0.93″
Vd111.8 in³ calc.
Mms406 g calc.
BL18.5 T·m calc.
EBP40 — suits sealed calc.
Sensitivity, 1 W / 1 m85.3 dB calc.

General

Size15″
Voice coilsdual 4 Ω
RMS power1,250 W

Mounting dimensions

Ø≈ 15 3/16″cutout Ø14″mounting depth 8 9/16″magnet Ø7 1/16″
Cutout diameter14″
Mounting depth8 9/16″
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 15″ models