Performance Optimized Down Fire Wide Sealed 10" Enclosure JL Audio 10W3v3 · Single 10" Sealed enclosure

Because it is only 12 inches deep. Our standard Performance Optimized Down Fire cabinet for this driver is 30 wide by 15 deep, and this one is built for spaces three inches shallower than that, typically under the rear seat of a truck or SUV or on a narrow cargo floor.

Airspace has to come from somewhere. Losing depth means recovering it along the length, so the cabinet runs 41 inches long and stands 7.4375 inches tall, and the driver still gets a properly sized chamber. If your space is wide and shallow rather than deep, this is the shape that works.

Same driver, different shape. The standard cabinet is 30 by 15 by 7.5625 inches and holds 1.09 cubic feet net. This cabinet is 41 by 12 by 7.4375 inches and holds 1.156 cubic feet net.

The wide cabinet holds more air because its height is set by the driver's mounting depth rather than by a volume target, and a larger sealed box runs a slightly lower Qtc, which is the safe direction. Choose on the space: with 15 inches of depth the standard cabinet is the pick; if depth stops at 12 inches and you have 41 inches of run, this one fits.

Because the driver's mounting depth sets the minimum cabinet height. The 10W3v3-4 mounts 5.93 inches deep; the flush-recess outer baffle layer recovers 0.75 inch, and with 0.75 inch held above the motor the cabinet stands 7.4375 inches tall.

On a 41 by 12 footprint that height holds 1.156 cubic feet net, so a 0.625 cubic foot box physically cannot contain this driver here. The result is better damped than the recommendation, which is the safe direction.

Qtc describes how a sealed system behaves near its corner frequency. The textbook reference is 0.707, called maximally flat, and at 0.683 with the 10W3v3-4 (0.697 with the 10W3v3-2) this enclosure sits just under it.

In practice you get flat response down to the corner, clean transient behavior with no overhang, low group delay, and a gentle 12 dB per octave rolloff below F3 46.0 Hz (47.1 Hz on the -2) that integrates naturally with the rising cabin gain of a vehicle.

Straightforward, because the 10W3v3-4 is a single voice coil driver at 4 ohms nominal, so there is no series or parallel decision to make. The enclosure has one side-mounted Proline X terminal cup pre-wired in 12 gauge OFC, and the amplifier sees 4 ohms.

JL Audio rates this driver at 500 watts RMS continuous and recommends 150 to 500 watts of amplifier power. Confirm your amplifier is comfortable at 4 ohms and set your gain toward the upper end of that range.

Side mounted. Every Proline X Performance Optimized enclosure uses a side mounted terminal cup regardless of alignment, whether standard, wedge, or down fire. On this cabinet that keeps the connection fully accessible with the enclosure in its installed position, since the baffle faces the floor. The cup is our Proline X ABS and carbon fiber composite unit, recessed, with stainless hardware, copper ring terminals, and pre-wired 12 gauge OFC.

V-groove and dado joinery, CNC-cut on ShopSabre routers from Langboard Elite MDF, with every joint machined to lock mechanically before adhesive goes on, which keeps the cabinet airtight under sustained pressure cycling. A windowed U-brace ties the front and rear walls together across the 41 inch span.

The front baffle is a 1.5 inch double layer, with the outer layer machined as a flush recess so the driver bolts to the inner layer. Corners are square, polyfill is installed as a light wall lining, and the 1.75 inch standoffs ship uninstalled. Assembled and inspected in Tullahoma, Tennessee.

No. This listing is for the enclosure only. Bring your own JL Audio 10W3v3-4. The cutout, mounting depth and motor clearance are all cut specifically for this driver.