Performance Optimized Down Fire Wide Sealed 10" Enclosure Kicker CompRT · Single 10" Sealed enclosure

Because it is only 12 inches deep. The standard Performance Optimized Down Fire cabinet for the Kicker CompRT is 30 wide by 15 deep, and this version is for spaces 3 inches shallower than that, under a rear bench 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 5.875 inches tall. If you have 15 inches of depth, the standard cabinet is shorter in length and is the better pick; if you have 12 inches of depth and 41 inches of run, this is the shape that works.

Same driver, different shape. The standard cabinet is 30 by 15 by 6.125 inches and was built to 0.80 cubic feet net. This cabinet is 41 by 12 by 5.875 inches and holds 0.808 cubic feet net.

The airspace is essentially the same, within about a hundredth of a cubic foot, so the two behave the same way. The choice is about the space you have: the standard box is deeper and shorter in length, this one is long and shallow.

Two things: a 32.3 Hz free-air resonance and a 0.618 Qts. Most shallow drivers push Fs into the high 30s or 40s because a shortened motor and stiffer suspension come with the format, and many carry a Qts near or above 0.9 which locks them into an underdamped alignment in any sealed box.

The CompRT avoids both. The low Fs is what lets it reach low, and the moderate Qts means it can hit a controlled alignment rather than only a punchy one. It also carries Forced-Air Cooling and a UV-resistant cone and surround.

For the 48CWRT104, Klippel measurement, not a datasheet summary. That is why this page lists Cms, Bl, Mms, Sd, Qes and Qms alongside the usual Fs, Qts and Vas. The alignment was computed directly from those values: Qtc 0.920, Fc 48.1 Hz, F3 39.4 Hz.

The dual 2 ohm 48CWRT102 figures come from a library parameter set (Fs 28.7 Hz, Qts 0.4865, Vas 35.36 L), not from Klippel data, and give Qtc 0.776, Fc 45.8 Hz, F3 42.1 Hz. Treat those as a guide to a few hundredths.

The enclosure has one side-mounted Proline X terminal cup pre-wired in 12 gauge OFC. The 48CWRT104 is dual 4-ohm, so you set the final load at the driver: coils in parallel for a 2 ohm load, or in series for 8 ohms.

Most single-driver builds run the 2 ohm configuration. Confirm your amplifier is stable at that load before powering the system.

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. Every panel joint is a machined interlocking groove that mechanically locks the panels before adhesive is applied, which keeps the cabinet airtight under sustained pressure cycling. A windowed U-brace, dadoed to the shell, ties the long walls together across the 41 inch span. The front baffle is a double layer at 1.5 inches, two bonded 3/4 inch sheets with the outer layer machined as a flush recess. Polyfill is installed as a light wall lining. Assembled and inspected in Tullahoma, Tennessee.

No. This listing is for the enclosure only. Bring your own Kicker 48CWRT104. The cutout and mounting depth are direct fit for the 48CWRT104, and the feet ship uninstalled in the box.