About the Q-Logic QLH-1.2512DE
Q-Logic enclosures take the guesswork out of box-building, so you can enjoy great bass without the time-consuming process of constructing your own enclosure. The QLH-1.2512DE accommodates two 12" subwoofers in a sturdy housing made entirely of non-resonant medium-density fiberboard. This box features reliable locking-joint construction, and is impeccably upholstered with durable gray carpet.
Since subwoofers' basket design and bolt patterns vary by brand, Q-Logic's ingenious QxE seal ring allows you to customize the box opening for virtually every woofer available. Plus, a cool-looking, one-piece grille works even with woofers that have large roll surrounds, so you get solid protection and sharp looks.
The box comes with two grilles (with screws), two sets of spring posts, two port tubes, and speaker leads with quick-slides for easy connection to your woofers.
Thanks to external port plugs, it's easy to switch between use as a sealed or ported enclosure. (Q-Logic even provides a chart on trimming your port tube to the proper length.) This box will fit in trunks, hatchback spaces, and the rear area of most SUVs and vans. Please measure the planned installation location to ensure fit.Key Specifications:
- for two 12" subwoofers
- 1.25 cubic feet internal volume (per sub)
- width: 31-7/8"
- height: 16-3/16"
- bottom depth: 15-5/8"
- top depth: 9"
- 1-year warranty
What's in the box:
- Dual hatchback-style enclosure
- 2 Plastic grilles
- Four 1-1/2" self-tapping screws (installed in grilles)
- 2 QxE-Rings (installed)
- 2 Cardboard port tubes (4" diameter x 12")
- Two 2' lengths of speaker wire (each length of wire has 0.205" female quick slides on both ends)
- Sixteen 1" self-tapping screws
- Instruction/Warranty/Port Tuning Chart sheet
- Instructions addendum
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More details on the Q-Logic QLH-1.2512DE
Features & specs
|Number of Boxes||1|
|Number of Speakers Per Box||2|
|Cutout Diameter or Length (inches)||11 5/16|
|Maximum Speaker Depth (inches)||10|
|Box Volume (cubic feet)||2.5|
|Second Depth (inches)||9|
|Wood Thickness (inches)||5/8|
|Speaker Wire Connectors||Spring Post|
|Box Color||Dark Gray|
|Parts Warranty||1 Year|
|Labor Warranty||1 Year|
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: The enclosure consists of two 1.25 cu/ft chambers. Each chamber will accept a 12" woofer. 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 trapezoidal shape of the enclosure better utilizes trunk space by allowing you to put the enclosure against the angled back of the back seat. 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 1/8" in woofer mounting diameter.
Pre-cut Port Hole: The box comes as a dual-compartment sealed enclosure, but includes pre-cut port holes on the top panel over each compartment, each 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 ports (two 4" diameter x 12" ports are supplied). Porting the box requires removing the port flanges and plugs, trimming the ports to the proper length, slipping the port tubes onto the fluted port flanges, inserting the port tubes from the outside of the enclosure, and the port flanges secured into place. The port plugs should be saved in case you want to change back to a sealed enclosure.
Plastic Grille: The one-piece plastic grilles fit into the outer edges of the enclosure openings and are held in place with two self-tapping screws. The grilles offer nearly an inch of "headroom" to accommodate woofers with large roll surrounds. Note: The grille adds approximately 7/8" to the overall depth of the enclosure when mounted.
This enclosure has two sets of spring posts located on the rear of the
enclosure. The spring posts will accept bare wire,
pin connectors, banana plugs, and dual banana plugs.
Brackets: Brackets (not included) are recommended for more secure mounting.
The Q-Logic QLH-1.2512DE replaces these items