Performance Optimized Down Fire Wide Sealed 12" Enclosure Morel Ultimo Ti SC122 / SC124 · Single 12" Sealed enclosure

Because it trades length for depth and height. The standard Performance Optimized Down Fire platform is 30 wide by 15 deep; this one is 14 deep, 1 inch shallower, and 41 long. Spreading the airspace along 11 more inches lets the cabinet stand 8.625 inches tall instead of 10.44.

Fourteen inches of depth is the practical minimum, since a 12 inch frame needs about 13 inches of baffle. If your space is long and low rather than deep or tall, this is the shape that fits.

Same driver, different shape. The standard cabinet is 30 by 15 by 10.44 inches and holds 1.66 cubic feet net. This cabinet is 41 by 14 by 8.625 inches and holds 1.676 cubic feet net.

The airspace is effectively the same, so the driver behaves the same way in either. Choose the standard box when length is limited; choose this one when height or depth is the limit and you have 41 inches of run.

At 1.676 cubic feet net the SC122 lands at Qtc 0.705, Fc 43.1 Hz and F3 43.2 Hz, essentially maximally flat. The SC124 lands at Qtc 0.618, Fc 42.2 Hz and F3 49.1 Hz, a touch more damped.

Both are computed from Morel's published parameters for each coil, and both are anechoic. Morel's own sealed recommendation for this driver is 20 to 50 liters, and this cabinet sits inside it.

Morel rates the Ultimo Titanium SC at 600 watts RMS, so target 420 to 600 watts RMS. Both coils are single voice coil drivers: the SC122 is a nominal 2 ohm load at 1.3 ohms DC, the SC124 a nominal 4 ohm load at 3.0 ohms DC.

A 2 ohm load is within most monoblocks' rating, but confirm your amplifier's minimum stable impedance before you buy that coil; the 4 ohm SC124 is the safe answer on any amplifier.

Side mounted. Every Proline X Performance Optimized enclosure uses a side mounted terminal cup, whether standard, wedge or down fire, which keeps the connection accessible with the baffle facing 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.

Down Fire cabinets are built with square corners as a series standard. The 3 inch top down corner radius used on other Proline X alignments does not apply here. A down fire box is a low, long platform that sits flat against a floor or cargo deck, and square corners maximize usable internal volume for a given footprint while keeping the cabinet stable on its mounting surface.

V-groove and dado joinery, CNC cut on ShopSabre routers from Langboard Elite MDF. Every panel joint is a machined interlocking groove that locks the panels before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. The front baffle is a 1.5 inch double layer, the outer layer machined as a flush recess around the 10.35 inch cutout.

A windowed U-brace stiffens the long panels, and polyfill is installed as a light wall lining. Do not add more fill; packing a sealed box makes it act larger and moves the alignment off the 1.676 cubic feet it was built to. Assembled and inspected in Tullahoma, Tennessee.

No driver. This is an enclosure only. You receive the cabinet finished in plush black carpet, threaded inserts pressed to the Morel bolt pattern, stainless machine screws, one side-mounted pre-wired terminal cup, the 1.75 inch feet and the polyfill lining in place. The Morel Ultimo Ti SC122 or SC124 is purchased separately.