Well, there has been some discussion on here about slim subwoofers. How they sound, will they fit in the indent and so forth. I have been planning this for a while, but money was tight so I just got around to it last weekend. Here are some pictures of my slim subwoofer in an enclosure in the trunk indent. It sits perfectly flush with the trunk floor so in essence I don't lose any real trunk space.

Pic1: The subwoofer box finished and installed


Pic2: The side profile of the subwoofer box showing how thin it is


Pic3: The notch for easy removal to gain access to the jack/tools


Pic3: Amp mounted on the back of the rear seats on an MDF board covered in carpet



How I did it:

The box is made of 3/4 inch MDF. The dimensions and quantities of the bottom pieces are as follows:

2x 24 x 3.125 Inch Boards
2x 10 x 3.125 Inch Boards
1x 10 x 22.5 Inch Board

These boards are what will make up the outside dimensions of the bottom of the box. I assembled them so that they make up a 24x11.5x3.125 Inch box. After that, it is a simple as making a template of the opening of the indent out of carboard and cutting out a piece of MDF to fit. Test fit all the pieces then just glue and screw them together. As you can see in the picture above, I only carpeted the top of the box, it is the only part that is seen and there isn't any point in covering the rest since its hidden. The carpet is from Crutchfied and is the charcoal color. I haven't found anything that matched 100% but this is pretty close. The box volume is .309CuF or .279 with the driver displacement figured in.


How it sounds:

My system now consists of Infinity Kappa 680.7cs for the fronts, Infinity Kappa 693.7i for the rear and an SQ10 Subwoofer from Elemental Designs. This is all powered from the 5 channel MB Quart PAB5400 running at 2 Ohms. This is approximately 80Wx4 and 300Wx1. The subwoofer is dialed down a little so it has about 250W RMS going to it instead of the whole 300.

It sounds great and I couldn't be happier. I was really amazed at the output of the sub, it does go low and does get loud. The system is very balanced and nothing overpowers the other components, it isn't bass heavy nor is it too much highs/mids and not enough lows, everything is working together. That being said, if you are looking for chest pounding bass, this just isn't going to cut it. This is a compromise between space, weight and output. It works great for what I needed it for and like I said, takes up almost no space at all.

Any questions/comments are always welcome.

 

Looks good. Very well executed.
If I'd make a box like this, I'd definitely get a sturdy mesh cover for the speaker so in case I put something in the trunk, it doesn't damage the woofer.

 

Thanks, and yes I have a grill for it. It looks better without it though, so I only put it on when I need to use the trunk.

 

very nice and clean. I like it! Great Job!

 

very nicely done, I too am considering doing this, just havent had the time because I want to get a new head unit in and replace my bose system.

 

Thanks for the compliments guys, they are appreciated.

 

Excellent choice in components and very clean install. Looks awesome, Juice!

 

Thanks drifter d

 

Nice.
I want one too. Just with a smaller amp for sub only and fit everything in the box because I have rear strut bar in my trunk.

Do you think it is possible?

 

Looks great. But I think I would have used 1/2" MDF for such a small sealed and low-power setup. Maybe given you an extra .1~.2cuft and been a little lighter.

Awesome job though! I love the little semi-circle cutout.

 

Even if you have a strut bar in the back, the amp still has plenty of room behind it on the back seats. I actually did this whole thing since I want to get the AutoEXE 4 point strut bars for the front and the rear and with this it will easily fit. Before this I had a box similar to the zenclosures box that you can get off of e-bay that I had built when I got the car 3 years ago. I got rid of it because it was heavy and didn't allow much to be put in the trunk and no strut bars either.

You could get a smaller amp, but it definitely won't fit in the box and still leave enough airspace for the subwoofer.


Yeah, I was planning on 1/2 inch or even fiberglass but I didn't want to deal with fiberglass after the enclosure I did in my 240SX in the spare tire well. Since Lowes didn't have 1/2 I just got the 3/4. The enclosure is a little small, but the sub works great in it. I might still do it in fiberglass but don't really have the time.

The semi-circle actually came about when I test fit the top to make sure it would fit and the damn thing got stuck in the well. After that I just notched it so I could easily lift the thing up. It still sits in their really tight but now I don't have to get a screwdriver and pry it out.

Anyways thanks for the comments guys!