Performance Optimized Down Fire Wide Sealed Dual 10" Enclosure Morel Ultimo Ti SC102 / SC104 · Dual 10" Sealed enclosure

Because it is only 12 inches deep. The standard Performance Optimized Down Fire platform is 30 wide by 15 deep, and under a rear seat or on a narrow cargo floor there is often not 15 inches to give.

The airspace lost from the depth is recovered from the length, so the cabinet runs 41 inches instead of 30 and stands 8.1875 inches tall, with each driver in its own separate chamber. If you do have 15 inches of depth, the standard 30 by 15 cabinet is the better pick.

The standard cabinet is 30 by 15 by 8.82 inches and gives each driver 0.60 cubic feet net. This one is 41 by 12 by 8.1875 inches and gives each driver 0.601 cubic feet net. The height was solved to hold the same airspace as the standard box, so the alignment carries over.

The choice is about shape: the standard box if you have 15 inches of depth, this one when depth is the limit and you have 41 inches of run.

In 0.601 cubic feet net per chamber the SC102 lands at Qtc 0.708 with Fc at 61.5 Hz and an anechoic F3 of 61.4 Hz, and the SC104 at Qtc 0.695 with Fc at 57.5 Hz and F3 at 58.6 Hz. The cabinet is sized to the SC102, so it sits right at the maximally flat reference, and the SC104 is a touch better damped in the same air.

Those are free space figures. Firing down into the floor, cabin gain below 60 Hz extends in-car response well below them.

One side-mounted terminal cup is pre-wired in 12 gauge OFC to both driver positions. The SC102 and SC104 are single voice coil drivers, nominal 2 ohm and 4 ohm, so the pair sets the load: two SC102 run 1 ohm parallel or 4 ohms series, two SC104 run 2 ohms parallel or 8 ohms series. Wire both identically and confirm the load against your amplifier's minimum stable impedance. Morel rates each at 600 watts RMS.

Side mounted, and there is one cup serving both chambers. Every Proline X Performance Optimized enclosure uses a side mounted terminal cup, and on a down fire cabinet that keeps the connection 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 to both driver positions in parallel.

V-groove and dado joinery, CNC cut on ShopSabre routers from Langboard Elite MDF, so every panel joint locks mechanically before adhesive is applied. The front baffle is a 1.5 inch double layer with the outer layer machined as a flush recess, and each driver lands on 8/32 threaded inserts with stainless machine screws. A full-height bonded 3/4 inch divider separates the two chambers and ties the walls together across the 41 inch span. Corners are square, the Down Fire series standard, which keeps the most internal volume for the footprint. Assembled and inspected in Tullahoma, Tennessee.

No. Polyfill is already installed as a light wall lining in each chamber, and the quantity is chosen so it does not change the acoustic volume. Do not add more: packing a sealed box makes it behave as though it were larger, which walks the alignment away from the 0.601 cubic feet per chamber this cabinet was built to.

No. This listing is for the enclosure only. Bring your own pair of Morel Ultimo Ti SC102 or SC104; the drivers are purchased separately. The cutout and mounting depth are direct fit at both positions, and the 1.75 inch standoffs ship uninstalled for an installed height of 9.9375 inches.