Performance Optimized Down Fire Sealed Dual 10" Enclosure | Kicker CompRT Dual 10" Sealed enclosure

Because two drivers in a shared sealed volume interact acoustically. Each driver's compression phase becomes the pressure environment the other driver is working against, which smears transient response and blurs the alignment each would have on its own. A full-height bonded 3/4 inch MDF divider eliminates that completely. Each CompRT gets its own 0.793 cubic feet net, its own polyfill, and produces its own clean sealed alignment at Qtc 0.924. Separate chambers are the standing design rule on every Proline X dual sealed enclosure.

Acoustically they are the same enclosure twice over. The single runs 0.80 cubic feet net at Qtc 0.922, this one runs 0.793 per chamber at Qtc 0.924. Same character, same corner frequency, roughly 6 dB more maximum output from the second driver. The difference is physical: both share the 30 by 15 inch footprint, but the single stands 6.125 inches tall and the dual stands 10.125. The single fits under seats. The dual is a cargo floor or rear-wall build.

Not on this footprint. Kicker's published sealed range runs to 1.25 cubic feet per driver and the alignment does tighten slightly with more air, but on a 30 by 15 inch cabinet every additional 0.1 cubic feet per chamber costs about an inch of height. At 0.793 per chamber this cabinet already stands 10.125 inches. Going meaningfully larger produces a box that is no longer a practical down fire enclosure. A larger per-driver volume is a different design with different dimensions, not a taller version of this one.

The enclosure uses one side-mounted Proline X terminal cup with a single pair of posts, pre-wired in 12 gauge OFC to both driver positions in parallel. You do not wire the two chambers separately at the amplifier.

Final impedance is set at the drivers. Each 48CWRT104 is dual 4-ohm, so you choose how to wire the two coils on each driver, and that determines the load the amplifier sees through the cup. Wire both drivers identically, since mismatched wiring between the two chambers will split power unevenly between them. Confirm the resulting load against your amplifier's minimum stable impedance before powering the system.

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.

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, wide 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 mechanically locks the panels before adhesive is applied, which is what keeps both chambers airtight under sustained pressure cycling. The chamber divider is a full-height bonded 3/4 inch panel. Front baffles are double-layer at 1.5 inches, two bonded 3/4 inch sheets, at both driver positions. Perimeter cross-bracing and pre-installed polyfill in each chamber complete the build. Assembled and inspected in Tullahoma, Tennessee.

No. This listing is for the enclosure only. Bring your own pair of Kicker 48CWRT104 subwoofers. The cutouts and mounting depth are direct fit at both driver positions.