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Adding bass to a truck can be a very complicated problem to tackle, especially when building a box! We offer pre-built enclosures that are ready to be dropped into your 88-98 Chevy CK / GMC Sierra truck that offer unbeatable performance and sound quality that simply cannot be matched. This is a single 12″ down firing model, why down firing? This style enclosure actually increase the SPL output of your subwoofers forcing the sound waves to travel up in down inside the cab before reaching the listener. The woofers are spaced off the floor so it's not possible for them to hit the floor while playing. It also keeps the subs out of view for security concerns. Overall you cannot find a better fitting or sound box.
You will not only see a difference in the quality of the boxes we build, but you will hear the difference and that is what is it is truly all about.
Our boxes are made from precision cuts of MDF. They are then liquid nailed, nailed and completely sealed. We then wrap them with high quality carpet that matches most vehicle interiors. All Boxes feature high grade spring loaded terminal cup(s) for the absolute best connection possible. All the custom series enclosures are made to fit precisely into your Chevy CK 88-98 Extended Cab to the get the max performance from every extra inch of wasted space.
Specifications:
- Air Space: 0.90 Cubic Feet
- Mounting Depth: 6"
- Sealed Enclosure
- Dimensions: Width 23-3/4" x Front Height 10" x Rear Height 2" x Depth 13-1/4"
- Constructed with High Quality MDF
- High Quality Binding Terminal Cup (Accepts Banana Terminal Plugs OR Bare Wire 'up to 10GA')
- High Quality Black Carpet
- Enclosure installs on Driver side under rear seat down firing
Susan Ramsay
Reviewed in the United States on May 8, 2025
Sub will hit the floor if used. Seller has zero communication. It would be an easy fix for the manufacturer. I will have to fix this crap box to make it work. Just build your ownUpdate: I contacted the seller directly. ZERO HELP! Stay away from the trash company!
Jared
Reviewed in the United States on July 13, 2023
Doesn't fit my low profile subwoofer. Says it's for 12" but doesn't fit. My audio guy is trying to make it work, but doesn't know if it will. Need to add to the back to be able to cut more if needed already sticks out a little. Looks good, but wish it'd fit my 12" like it said it should.
Steve Maloney
Reviewed in the United States on December 25, 2023
I was skeptical at first thinking I wouldn't get good bass from this small shallow box but I was wrong! It fit perfect in my 1995 Silverado. One 12" sub is all I need. Sturdy build.
Jer in CA
Reviewed in the United States on March 31, 2019
1997 GMC K1500 Ext. CabThe quality is par for this price point. The carpeting in a couple of areas wasn't tight in the corners and was splitting, but honestly, I couldn't and wouldn't do any better in those spots that won't ever show anyway. The part of the box that faces out is what they pay attention to and it looks fine, and the questionable parts... well, those are some tight angles.I did have to do some trimming, as you can see in the photo, to the area where the subwoofer gets screwed down. The mounting ring on the 12" Rockford-Fosgate R2 was just a little to large of a diameter to allow the sub to fit flush. A utility knife whittled away at the offending portions of the box, no sweat.My 500 watt Rockford-Fosgate single channel amp fits in the short step of the box beautifully, and after test fitting the box, I noticed I could mount my 3 Farad capacitor to the inside edge (where it looks like it is sitting on top of the box in the photo), although only two of the four mounting screws could be used, but no matter, she's tight ;)The box is made well, all visible seams inside were sealed and after mounting the sub, it gave that satisfying thud, when tapped. All in all, you will be happy. I have yet to finish the rest of the build, but will update if sound quality stinks, but that is highly doubtful. I had this setup in another vehicle, different box, and it crushed. Buy away boys, it'll work!UPDATE:Sound is just fine. I haven't checked for air leaks, just tuning the amp and head unit now, but the sound quality is very good. Note, I did have to remove my capacitor, it didn't quite fit as hoped. omitted the cap entirely from the system. I turned the amp so the terminals faced the passenger door (Not the rear of the can, as in the photo) and it wired up easily. It is doing everything it is asked to do :)
Clayton Borton
Reviewed in the United States on August 5, 2018
Box sticks out a little which isn’t horrible but room is already tight in an extended cab. So every few weeks I have to shove the box back and it doesn’t sit perfectly flat on the floor when I do that but my sub still sounds good and it gives my passengers foot room. Box is otherwise good quality.
Prime4Life
Reviewed in the United States on May 16, 2018
Awesome quality sub box.Be aware you are going to need to remove some interior for your sub to fit unless you have a small magnet or a shallow sub.I found where my sub was hitting the back by placing some of that soft rope weatherstripping stuff down then placing the sub in the box. Next I used a router to cut out a section a little more than a 1/4” deep. Sub fit perfect after that.Previous owner of my truck gave me the sub and had it in a box way too big for its specifications.Let me tell you, size matters when it comes to subwoofer enclosures.The sub went from a decent soft hit to a thunderous boom! No joke. It now is shaking the whole cab.
Joe
Reviewed in the United States on September 25, 2015
Fits nicely under the back seat of my 1991 Chevy extended cab on drivers side. As noted by other reviewer, it does stick out a little bit but does not bother me much. You do NOT have to remove the jack storage box, even though description states that you do. I chose to remove the terminals on the box, which is easily done by removing nuts from the posts located inside the box. This allowed me to feed the wires through the terminal housing and wire directly to sub, eliminating a possible connection or distortion issue.
Dan Wiegel
Reviewed in the United States on May 20, 2014
Its a great box but it kinda does stick out from under the seat which I was hoping it would not. It sounds really good with my sub.
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