Performance Optimized Down Fire Wide Sealed 12" Enclosure Skar Audio EVL-12 · Single 12" Sealed enclosure

Because some installs run out of height or depth before they run out of length. The standard Skar EVL-12 Down Fire cabinet is 30 by 15 by 9.11 inches; this one is 41 by 14 by 9.125. Here the motor sets the height, so the wide box stands about the same, but it is 1 inch shallower front to back, about the minimum a 12 inch frame needs, and the extra length holds more air.

If you have 41 inches of run and height or depth is the limit, this is the shape. If length is the limit, the standard 30 x 15 is the better fit.

Same driver, same construction, different shape. The standard box is 30 by 15 by 9.11 inches and holds 1.33 cubic feet net; this one is 41 by 14 by 9.125 inches and holds 1.765 cubic feet net.

The wide box holds more because the 7.61 inch motor sets its height, and on a longer footprint that height encloses more air. More air lowers Qtc, a softer, better damped corner. Choose the standard box when length is limited or you want the livelier alignment, this one when depth is the limit.

Skar rates the EVL-12 at 1250 watts RMS, so target 875 to 1250 watts RMS at the final load.

The EVL-12 D4 wires to 8 ohms in series or 2 ohms in parallel. The EVL-12 D2 wires to 4 ohms with its coils in series or 1 ohm in parallel. Anything under 1 ohm, and many amplifiers at 1 ohm, is outside what the amplifier is built for; series wiring is the safe default. Confirm your amplifier's minimum stable impedance first.

The cabinet is 9.125 inches tall measured in the down fire position, and that figure excludes the standoffs. The standoffs hold 1.75 inches under the baffle, so plan your space around a finished stack of roughly 10.875 inches.

The footprint is 41 inches wide by 14 deep, the Down Fire Wide platform. Height is the only dimension solved to the driver.

The baffle is two bonded 3/4 inch sheets, 1.5 inches through. A 12 inch woofer at 1250 watts puts real pressure on it. A single 3/4 inch panel flexes under that load, which smears output and works the driver loose over time; the second layer stiffens the face and gives the mounting hardware twice the material to bite.

The outer layer is machined as a flush recess to the 12.5 inch frame, so the driver bolts to the inner layer.

Anechoic, EVL-12 D4: F3 53.5 Hz with system resonance at 38.1 Hz (Qtc 0.537); EVL-12 D2: F3 59.9 Hz with system resonance at 37.9 Hz (Qtc 0.494). Below Qtc 0.707 the rolloff is gentle and F3 sits above fc, which is what a well-damped sealed box does.

Those figures exclude cabin gain. In a car the cabin's transfer function adds real output below 50 Hz, so in-vehicle response runs deeper than the numbers above.

No. Polyfill is already installed as a light wall lining to control internal reflections, and the quantity is chosen so it does not change the acoustic volume.

Do not add more. Packing a sealed box with fill makes it behave as though it were larger, which walks the alignment away from the 1.765 cubic feet this cabinet was built to.

No driver. This is an enclosure only. You receive the cabinet finished in plush black carpet, one side-mounted pre-wired terminal cup, the polyfill lining already in place, the standoffs, and a threaded insert kit with stainless machine screws.

The inserts ship loose on purpose: Skar prints no bolt circle for the EVL-12, so you set the driver in the recess, mark its holes, drill and press the inserts. The Skar EVL-12 is purchased separately.