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Q-Logic QLH-.8512DE

Type 1 dual 12" hatchback box

3 Reviews

Item #: 044H8512DE

This item is no longer available.

Original Price: $89.99

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Overview

Our take on the Q-Logic QLH-.8512DE

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-.8512DE 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.

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-.8512DE 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, polyester fiber stuffing, and speaker leads with quick-slides for easy connection to your woofers.

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
  • 0.85 cubic feet internal volume (per sub)
  • dimensions:
    • width: 31-7/8"
    • height: 16"
    • bottom depth: 12-3/4"
    • top depth: 7"
  • 1-year warranty

What's in the Box:

  • Dual hatchback-style enclosure
  • 2 Plastic grilles
  • Four 1-1/2" self-tapping screws (installed in grille)
  • 2 QxE-Rings (installed)
  • Two 2' length of speaker wire (with 0.205" female quick slides on both ends)
  • Sixteen 1" self-tapping screws
  • 2 Pieces of Polyfill batting (22" x 13" each)
  • Instruction/Warranty sheet
  • Instructions addendum
Reviews

Q-Logic QLH-.8512DE Reviews

Average Customer Review:

3 Reviews

A little tight, Buts fits just right!

Written by: Sonoma Guy from Port Charlotte, Fl on October 12, 2005

Crutchfield Customer Review (What's this?)

Having a non-extended cab 2002 Sonoma made it a real challange to set two 12" in there and 1 10" is to lame for me. I found this box and busted out the ruler and in black and white it should fit. I just today via UPS and wow! Crutchfield got it to me really fast, I'm use to waiting and waiting for stuff from other websites. I give Crutchfield 10 stars for fast shipping and having great prices. OK, let me sum this up the install is done and the truck sounds like a million bucks. Sony XAV-A1 head unit, Audiobahn A8002T amp, Q-Logic QLH-.8512DE sealed enclosure, two Audiobahn AW1206T 12" woofers, Boston Acoustics Pro60 6-3/4" Component System,<BR>Audiobahn 2040N 4" 2-way Speakers.<BR>

Pros:

Cons:

Nice box

Written by: Chris from Louisville, KY on August 3, 2005

Crutchfield Customer Review (What's this?)

I put two Blaupunkt TSw1200's in this box in my 1997 Grand Prix and I am totally satisfied! I'm not into competition level, so this small setup is perfect for anyone wanting more than the stock system can provide. The bass it tight and really adds to the rock music that I mostly listen to. There's also quite a bit of boom with Rap as well. <BR><BR>I previously had 15" Vegas, but the box they were in was too large and I needed to increase my trunk space. With this small thing, I still have the bass for my music and now I can actually use my trunk. Well worth the money!!

Pros:

Cons:

A box is so important.

Written by: durdagr from Bridgewater, NJ on June 24, 2005

Crutchfield Customer Review (What's this?)

When you look at all the instruments that make bass in music, they's all usually bigger or have bigger enclosures. It's important to understand that Bass will actually be the result of the box you're subs are in, rather then the subs themselves. I have purchased this Box to go with the Kenwoods KFC's i reviewed.<BR><BR>My impressions.<BR><BR>This box is heavy! This is an indication of great quality right out of the box, so to speak. The carpeting was impeccable, speaker terminals were very good. The joints were all sealed air tight and vary solid. The speaker cavities had a very nice rubber liner gasket to help seal whatever subs you put in. Poly fill was a nice touch and a necessary addition to any good quality box. Honestly i don't think boxes can come any better made then what's supplied by Q-logic. The bass this enclosure generates is superb, tight, responsive and NOT muddy. <BR><BR>Highly recommended.<BR><BR>

Pros:

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Details

Hands-on research

What's in the box?

Download the Q-Logic QLH-.8512DE manual

  • Dual hatchback-style enclosure
  • 2 Plastic grilles
  • Four 1-1/2" self-tapping screws (installed in grille)
  • 2 QxE-Rings (installed)
  • Two 2' length of speaker wire (with 0.205" female quick slides on both ends)
  • Sixteen 1" self-tapping screws
  • 2 Pieces of Polyfill batting (22" x 13" each)
  • Instruction/Warranty sheet
  • Instructions addendum

Product Research

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: The enclosure consists of two 0.85 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 3/16" in woofer mounting diameter.

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.

Spring Posts: 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.

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

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