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Q-Customs Factory-fit Subwoofer Enclosures

Fits select 2000-up Chevrolet/GMC pickups and SUVs

Item #: 044C1GMA11

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8 Reviews | 3 questions - 15 answers

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Q-Logic designed this black Q-Customs enclosure to hold one 10" Type 1 subwoofer, giving you factory fit and finish plus great sound and durability. It fits under the driver's side rear seat of your 2000-up Chevrolet or GMC pickup, or under the middle seat of your General Motors SUV, without sacrificing any space.

Note: This enclosure will only work in vehicles with second row 60/40 split bench seats. It will not work in vehicles with second row captain's chairs (bucket seats with fold-down armrests). Please enter your vehicle information or call an Advisor at 1-888-955-6000 to find out if this model is compatible with your vehicle.

Product Highlights:

Q-Customs Factory-fit Subwoofer Enclosures Reviews

Average Customer Review:

8 Reviews


Written by: JasonM from SO. ILL. on April 24, 2015

Crutchfield Customer Review (What's this?)

This is a very high quality enclosure. Fits like a glove and looks great. If you are looking to save space and add bass you won't be disappointed.

Pros: Fit-look-quality

Cons: I have not one complaint about this product

Perfect Fit

Written by: Terry from Jacksonville AR on February 14, 2015

2005 Chevrolet Avalanche
Crutchfield Customer Review (What's this?)

Fits perfect under the rear seat of my 03 Avalanche. Solved my dilemma if where to place my sub. Great alternative to the overkill of a mid-gate enclosure. And since the sub remains in the cab instead of the truck bed, the single 10" is great for normal listening

Pros: Perfect fit, solid construction, keeps the sub in the cab

Cons: Limited to a single 10" sub... might not be enough bass for some


Written by: Steve from East Coast on February 10, 2015

Crutchfield Customer Review (What's this?)

Cannot believe the quality and sound it's great. Very happy. Threw in an old school Orion XTR sub fed it 300 watts and it's awesome!

Pros: Perfect fit. Great quality

Cons: None

Q logic sub enclosure

Written by: Mike R from Detroit, MI on July 10, 2014

Crutchfield Customer Review (What's this?)

Fits great & sounds awesome without losing any space in the rear, win-win for me!

Pros: Hidden from view, sounds great.

Cons: None.

Q- customs factory- fit subwoofer enclosures

Written by: Demond W from pittsburgh pa on January 10, 2014

Crutchfield Customer Review (What's this?)

this is a wonderful item. You can have a speaker right underneath your seat without taking up any space and you still have room for the family!!!

Pros: save space, your speaker is hidden from view. People with ask you where is all of that bass coming from because there is no kicker box. lol

Cons: non, what more could you want. You have a hidden 10 sub that is right in the middle of your vehicle and out of sight.

Great box

Written by: Randy from Houston, TX on August 5, 2012

Crutchfield Customer Review (What's this?)

I have a 2002 Chevy Abalanche and if you want a box that you can keep conceled you only have 3 options...a center console box which does remain hidden but you loose your center console storage, A midgate design wich i did not really care for the look or the cost of, and this box which is the least expensive of all three options. I went with this box because it does go under the back seat which is a big plus because I did not want to give up seating by having to put a box in the seat. I was a little worried that one 10" would be enough but I purchased a 10" Kicker Solo Baric Classic with a 500 Watt Sound Ordinance Amp and I am telling you it is plenty loud and hits plenty hard. i am not saying you are going to win any speaker comp with this little set up but I promise you will turn heads and be noticed. The box is well built and the perfect size for the speaker I purchased. The box fits great once I took out the plate from under the bottom of the seat. No big deal because the plate came out easy and did not support any weight. The only downside is you can only drop the midgate down maybe half way unless you take the box out, which is not hard to do and the box is light.

Pros: Perfect size and and great for staying conceled.

Cons: Cant lower midgate down all the way when installed in 2002 Chevy Avalanche

great bass!!

Written by: Alan from southern NH on June 16, 2009

2005 GMC Sierra Denali

Installed this box with a 10" alpine and it sounds great. the box takes up no space at all and lots of bass for a single sub.



Q-Customs Factory-fit Subwoofer Enclosures

Written by: lamborghinicam from Highlands, NC on September 10, 2008

Crutchfield Customer Review (What's this?)

I've been wanting a small subwoofer in my truck ever since I got it, I've tried every "low profile" box on this site and all of them would end up requiring me to modify the backseat, which is something I am unwilling to do, not with this box!!. This box "drops" in under the back seat of the trucks or center seat if you have one of the suvs, rather than bolting down, the seat hardware keeps the box in place making it really easy to remove if you need the extra space for storage. My only complaint the seat cannot fold down while the sub is in place, but you can't have everything. You don't need a powerful Sub/Amp with this box (unless you want a lot of bass). In my box I have a Rockford Fosgate Punch S1 on a Sony 222 amp, Due to the box placement and design I get more satisfying bass than Ive gotten out of 12" Fosgate subs with factory matched amps.



Hands-on research

What's in the box?

Download owner's manual

  • Black custom 10" subwoofer enclosure with installed terminal cup
  • Black mounting shoe
  • Rubber gasket ring
  • 30" Attached speaker wire (installed inside enclosure)
  • 8 Woofer mounting screws
  • Two #8 x 3/4" mounting screws
  • Polyester fiber batting
  • Installation Instructions sheet

Product Research


Compatibility: This Q-custom enclosure is designed to be installed under the driver's side second row bench seat in the following vehicles.
  • 2000-up Chevrolet Avalanche
  • 2001-up GM Crew Cab Trucks
  • 2000-2006 Suburban, Yukon, and Tahoe
  • 2002-2006 Cadillac Escalade/EXT

Note: It will not fit vehicles equipped with second row captain seats.

Materials: The enclosure is made of strong, lightweight, black, thermo-formed ABS plastic and features a 5/8"-thick MDF baffle covered by grey carpet for mounting a 10" woofer.

Enclosure Type: According to Q-Logic's Bass Performance Match specs, this Q-custom is a Type I enclosure, suitable for drivers designed for small, sealed enclosures.

Speaker Terminals: The Q-custom has two spring-loaded binding posts, which can securely accept bare wire, pin connectors, banana plugs and dual banana plugs.

Woofer Orientation: Once the enclosure is mounted in the vehicle, the woofer fires downward toward the floor of the vehicle.

Mounting: All mounting hardware, including mounting screws and a mounting shoe for Tahoe and Yukon installations, is included.

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.

Customer Q&A

3 questions already asked

The box prevents the seat from laying completely flat. The nice thing is that you can just disconnect the speaker wires to the box and move it within seconds. [ WES  Jan 18, 2015 ]
Hi John, after you install the enclosure, you can't lay the back seat flat completely, you have to remove the enclosure, but is not to hard to do it , my enclosure is installed in a Avalanche 2007 , so the back panel to make the cargo space bigger doesn't lay completely flat. But again is not hard remove it, because doesn't need be attached with screws to avoid moves when you are driving . [ JESUS  Jan 18, 2015 ]
The seat bottom will hinge forward but the seat back will not lay all the way down flat. It goes 1/2-3/4 of the way down. It is my only complaint. [ STEVEN  Jan 18, 2015 ]
It prevents it from laying flat [ Brian  Jan 18, 2015 ]
To clarify the above answer, it is in regards to a 4 door chevy pickup. [ BROCK  Jan 18, 2015 ]
The enclosure prevents the back seat from laying completly flat. [ BROCK  Jan 18, 2015 ]
Yes it does put it in a 02 tahoe w a kicker 10 hits hard sounds like 2 12s. [ chance  Jan 18, 2015 ]
I used the space behind the rear seats for the amps. Its the only place you have left if you don't want to mount an amp under the passenger side rear seat. If you chose to go under the seat you will have to pull the jack and other tools then grind off the mounting bolts which secured them. [ RAFAEL E  Aug 11, 2014 ]
This box takes up the middle and drivers side of the rear seat. I have my amp under the passenger side of the seat. As long as your amp can fit under that area it can go under the seat. [ JASON A  Aug 08, 2014 ]
I mounted the amp on the passenger side rear seat. It is under the seat and I was able to run all of the cables under the carpet including the giant power wire and all of the RCA cables. The box only goes under the 60% side. [ Heart of Texas  Aug 08, 2014 ]
Sorry but I can't help my truck got stolen the day before I recived the box [ oscar  Apr 01, 2014 ]
It does not need a "special" sub, but it does need one that has a mounting dimension that doesn't exceed the box depth. [ BROCK  Mar 20, 2014 ]
Make sure the sub you chose has the mounting clearance for this enclosure and will work within a small sealed enclosure. This will limit the choices you have. I went with a type R sub from Alpine knowing the top mount depth was going to be more than the enclosure could handle. After building a spacer to lift the sub out of the box everything worked out excellent. Just a little more work. [ RAFAEL E  Mar 20, 2014 ]
The q logic box will hold any ten inch sub so long as the mounting depth is not exceeded. The box gives max depth on its specification and dimension info and subs will list this dimension also. It also sounds pretty good. Just don't expect any competition winning bass. [ STEVEN  Mar 19, 2014 ]
I installed a 10" Polk sub and this fit into the enclosure perfectly. I the mounting diameter of the sub you are installing is 9.125" or less no modifications are needed. I it is greater you will nee to cut the rubber QX ring. This is no big deal and takes about 5 seconds. The only thing I did differently than the instructions stated was drilling the sub mounting holes. This made installing the mounting screws much easier. I had the sub in the enclosure in less than 15 minutes. All I needed to install it into my truck was to raise my rear seat and lay it in. The unit sounds great. Hope this helped. Bob. [ ROBERT  Mar 19, 2014 ]