Features

Materials: The box is constructed of 5/8" MDF (medium-density fiberboard), with a second MDF panel adhered to the back of the front panel to provide the mounting surface for the woofer. MDF resists flexing and has anti-resonant qualities.

Design: For strength, Q-Logic uses a full dado groove on the front, back, top, and bottom panels. The side panels are glued, then locked into these grooves. The edges of the front, back, top and bottom use mitered joints, so there's 50% more surface area for the special glue that bonds them. The side panels of the box are recessed 0.5". The enclosure is covered with durable gray carpet.

QxE-Ring: The QxE-Ring is a multi-diameter woofer mounting adapter which also seals the woofer into the enclosure. The QxE-Ring has a series of rings around the outside to help center the woofer, and hash marks to help align the woofer's mounting holes. If the mounting diameter of the woofer is 11-1/8" or less, the woofer can be installed without trimming. For woofers with a larger mounting diameter, a portion of the QxE-Ring can be trimmed off, allowing for an extra 1/4" in woofer mounting diameter.

Pre-cut Port Hole: The box comes as a single-compartment sealed enclosure, but includes a pre-cut port hole on the top panel, covered by a black plastic port plug and a silver elliptical plastic port flange. The flange is held in place by three Philips head screws. The instruction sheet provides a port tuning chart and guidelines on the proper length to cut the port (a 4" diameter x 12" port is supplied). Porting the box requires removing the port flange and plug, trimming the port to the proper length, slipping the port tube onto the fluted port flange, inserting the port tube from the outside of the enclosure, and the port flange secured into place. The port plug should be saved in case you want to change back to a sealed enclosure.

Plastic Grille: The one-piece plastic grille fits into outer edges of the enclosure opening and is held in place with two self-tapping screws. The grille offers nearly an inch of "headroom" to accommodate woofers with large roll surrounds. Note: The grille adds approximately 3/4" to the overall depth of the enclosure when mounted.

External "Top Hat": Mounted to the rear of the enclosure, the External Top Hat is an oval-shaped plastic insert which extends the woofer mounting depth by nearly 3/4", allowing more woofers to fit into the enclosure. The cutout for the insert is 7-1/2" wide and 6" high. The external panel is 9-1/4" x 7-5/8" (oval), but protrudes less than 1/4" from the back panel.

Spring Posts: The spring posts, located on the rear of the enclosure, will accept bare wire, pin connectors, banana plugs, and dual banana plugs.

Brackets: Brackets (not included) are recommended for more secure mounting.