Here are the plans for the DamonB subwoofer enclosure. I produced dozens of these as kits years ago from 1/2" MDF panels that were CNC cut to shape which the user merely glued together. There is no need for this project to be CNC cut but since I have access to that equipment I used it to produce the kits. There is absolutely no reason you can't build this with nothing more than a circular saw to cut the parts and a jigsaw to cut the woofer hole.

This box is a sealed enclosure and has about a .75 cubic foot internal volume. It will hold one 10" (or smaller) woofer. If you want it to hold something different design your own box The enclosure fits under the stock rear strut tower bar and the front face is sloped leaving about a 2.5" gap behind the stock cargo divider. Leaving the cargo divider in place allows you to mount an amp, crossover etc to the front of the enclosure and yet have the equipment and cables hidden by the divider while remaining easy to get to. The enclosure does not block access to the spare tire or fuel pump cover in any way and nothing in the car is cut or drilled to fit the enclosure. The box fits between the shock towers nicely and is held in place by the stock rear strut tower bar pressing it down into the carpet. If finished nicely it looks damn near stock and won't attract attention. My enclosure has been in place for years and years and I never remove it for racing events. It stays firmly in place.

All of the dimensions listed are external dimensions. I built mine from 1/2" MDF but you could use something else if you desire. Because the front of the enclosure is sloped to match the angle of the cargo divider some of the cuts must be bevel cuts. This can still be accomplished with nothing more than a circular saw if you are careful and use a guide. A table saw would of course make it easier but it is not required. The rear side of the enclosure is a trapezoid shape to nicely fill the space between the strut towers. It is in effect a false face because the sides behind it are still vertical in order to make construction simple. I also recommend fitting braces inside to either side of the woofer hole to greatly strengthen the enclosure.

I covered my enclosure in black vinyl that matches the texture of the trunk plastics and fitted a finely perforated grill to protect the woofer from flying groceries. These can be obtained from www.partsexpress.com:

black vinyl

10" fine mesh speaker grill

Below are a drawing with dimensions and a pic of the enclosure installed. Remember that these are external dimensions for the enclosure and you must take into account the thickness of your material when you actually cut the parts. I'll add more installed pics tonight.

 

badass

 

Nice write up there. But What if i wanted to put the sub where the spare tire is?

 

wow! you have beat and trunk space! very nice!

 

Then you'd have to make yours different now wouldn't you?

I like my spare tire. Comes in handy.

 

Very nice setup, great write up, and nice pix too.

Im gonna save this info and use it in the future.

Thanks

 

Yeah, me too. Course the wife is not so fond, and has told me to lay off the beer a little bit...

 

Thanks for posting this information again, Damon. If I ever get around to upgrading the stereo in my FD, I'll definitely be building your enclosure with a nice JL or similar sub.

 

then this is what it will look like

 

instead of one can this be adapted for 2 subs? what would the overall diameter of each sub have to be?

thanx for posting, im gonna have to save this info for later on.

 

I was in one of the GB for that subwoofer box.

I am so pathetic I still haven't installed it yet



The box is rather small, I guess you could use two 6". If you use two 8's it would not surprise me that the sound quality would be affected due to the size of the enclosure. But I'm not a sound guy.


My cut out is made for one 10" and I think that is more than ample size for an FD cabin.

 

Damon's box is a sealed box more designed to achieve sound quality than sound quantity. If one 10" driver isn't enough SPL for you, then I don't think Damon's box is what you're looking for....

As far as adapting Damon's design for two smaller drivers, you will have to check out the driver requirements for volume to work properly (and double them!).

 

Damon, Nice box!! I been waiting to make one for my 10" JL 10w7.. I think w7 might be too big for your box but I might be able to change just a bit to fit it.

Thanks for the pics and dimensions.

 

You better not be one of the guys that emailed and badgered me constantly trying to get one

 

That is almost the same setup that my car came with. Don't know who made it, but it fits everything nicely.

 

Nah I'm not that pathetic lol

 

rynberg: i know what its designed for. i was just asking a simple question about its adaptability to different configurations....

i think one sub is plenty, i was just asking because i think 2 is more asthetically pleasing than one. i happened to know a few ppl that can get me good quality subs for dirt cheap. so i was wondering if the same size enclosure could be adapted(give or take a few sqaure inches) without hidering the current configuration's benefits.

also does the cargo cover make a big difference?

its stated that: "The box fits between the shock towers nicely and is held in place by the stock rear strut tower bar pressing it down into the carpet. If finished nicely it looks damn near stock and won't attract attention. My enclosure has been in place for years and years and I never remove it for racing events. It stays firmly in place."

does that mean that there are no brackets holding it down or anything like that?

 

ive been wondering how to do this and thats the answer ive been looking for.....once again damon, ur wisdom is very helpful.

 

Is that your car?

If so what Recaro's are those??

 

yes it is..they are the recaro profi spa in carbon kevlar...

 

that is one nice looking interior setup

 

DamonB, does your box allow you to keep the cargo cover?

ChimpFury, your box looks exactly like what i want to do! if only you knew who made it

 

thanks for posting Damon, I'll be building this as soon as possible.

 

Correct. The rear strut bar actually holds the enclosure in place. Since the bar runs right across the top of the enclosure the box can't tilt front to back. It can't move side to side because it meets the strut towers at the sides.

Nothing attaches the box to the car. For all intents and purposes it just sits there and doesn't move.

 

I can't say for certain because my car never had a cargo cover. I know the little brackets under the strut bar will clear, but I don't know how the cover mounts to those brackets. I don't know if there is interference or not.

Maybe somebody who built one can say for sure?