JL Audio 10W1v3 Box: Sealed 10" Down Fire Enclosure Single 10" Sealed enclosure

The 10W1v3, yes, in both the 2 ohm and the 4 ohm version. The baffle is cut to 9.0625 in, JL's published mounting hole, under the 10.5 in frame. The 4.60 inch motor clears the cabinet with 0.75 inch to spare.

Any other 10, no. The airspace is engineered around the 10W1v3's own Qts and Vas, and a different woofer that happened to drop into the hole would not see the alignment printed on this page.

0.78 cubic feet net on JL's published figures: the 2 ohm version reads Qtc 0.754 with resonance at 43.7 Hz and half power at 41.1 Hz, and the 4 ohm version reads Qtc 0.767 with resonance at 45.0 Hz and half power at 41.7 Hz. One cabinet serves both versions. The 4.60 inch motor sets this down fire's height, and at that height the cabinet holds 0.78 cubic feet, more than JL's 0.55 cubic foot recommendation; it is built at the size the motor allows, which lands both versions closer to maximally flat than JL's own box. That is a touch above maximally flat: a small lift near resonance and firm midbass.

The 4.60 inch mounting depth sets the minimum cabinet height here, so the airspace is what the motor allows rather than a free choice.

JL rates the 10W1v3 at 300 watts RMS, so target 210 to 300 watts RMS at the final load.

JL sells the 10W1v3 as a single voice coil driver in a 2 ohm and a 4 ohm version: the 2 ohm version presents 2 ohms; the 4 ohm version presents 4 ohms, wired straight to the terminal cup. Confirm your amplifier's minimum stable impedance first.

The cabinet is 6.10 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 7.85 inches.

The footprint is the standard Performance Optimized down fire platform, 30.00 inches wide by 15.00 deep. Height is the only dimension solved to the driver, and here it is the 10W1v3's 4.60 inch motor that sets it.

The baffle is two bonded 3/4 inch sheets, 1.5 inches through. A single 3/4 inch panel flexes under the pressure a 10 inch woofer puts on it at 300 watts, 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 JL's 10.5 inch frame, so the driver bolts to the inner layer.

Anechoic F3 is 41.1 Hz on the 2 ohm version and 41.7 Hz on the 4 ohm version. Above Qtc 0.707 F3 sits below fc, so the response carries a small lift near resonance before it rolls off.

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 0.78 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 stainless machine screws.

The threaded inserts are already pressed on JL's 9.7 inch bolt circle, so the 10W1v3 drops in and bolts down. The JL Audio 10W1v3 is purchased separately, and the cabinet is cut direct fit to it, not a general purpose 10 inch box.