Performance Optimized Down Fire Wide Sealed Dual 10" Enclosure JL Audio 10W3v3 · Dual 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 7.5 inches tall, and still keeps each driver in a properly sized separate 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 8 inches and holds 0.55 cubic feet net per driver. This cabinet is 41 by 12 by 7.5 inches and holds 0.553 cubic feet net per driver.

That is effectively the same airspace, so acoustically the two are interchangeable. 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.

Each chamber holds 0.553 cubic feet net and each 10W3v3-4 lands at Qtc 0.848, Fc 55.1 Hz, F3 47.4 Hz. The 10W3v3-2 has its own published parameters and lands at Qtc 0.865, Fc 57.6 Hz, F3 49.0 Hz. That is above the 0.707 maximally flat reference, so there is some lift near the corner in exchange for twice the cone area and 1000 watts RMS combined.

Those figures are anechoic. Firing down into the floor, the sealed rolloff meets rising cabin gain below 60 Hz, so in-car response runs deeper.

The 10W3v3-4 is a single voice coil driver at 4 ohms nominal, so there is no coil configuration decision at the driver. The enclosure uses one side-mounted Proline X terminal cup, pre-wired in 12 gauge OFC to both driver positions in parallel, so two 4 ohm drivers present a 2 ohm load at the cup.

Confirm your amplifier is stable at 2 ohms before powering the system, and target 150 to 500 watts RMS per driver per JL Audio's recommendation.

By the airspace. With the footprint fixed at 41 by 12, the height was solved to put each chamber on the 0.55 cubic feet the standard dual holds, then rounded up to the next sixteenth, which gives 7.5 inches.

At that height each 5.93 inch motor clears the top panel by 0.82 inches, above our 0.75 inch minimum. The chamber divider runs vertically, so splitting the cabinet into two chambers does not change the depth requirement.

Side mounted, and there is one cup serving both chambers rather than one per chamber. 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 both baffles face 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 both chambers airtight under sustained pressure cycling. The chamber divider is a full-height bonded 3/4 inch panel, which also ties the front and rear walls together across the 41 inch span.

Front baffles are a 1.5 inch double layer at both driver positions, with the outer layer machined as a flush recess so each driver bolts to the inner layer. Corners are square, polyfill is installed as a light wall lining in each chamber, 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 pair of JL Audio 10W3v3-4 subwoofers. The cutouts, mounting depth and motor clearance are cut specifically for this driver at both positions.