I've been using this forum for my entire stereo installation, so I thought I'd share my experiences building a subwoofer enclosure. I started out using these plans as a template, and had to modify them very little. I used the third plan, as I needed the most volume for my Alpine 12. Using 3/4" MDF all around, and expanding the top piece to 13.5" to accommodate the extra width, left me with a volume of 0.752 cubic feet. Unfortunately, this left me with 0.624 with the subwoofer in place, which is below the recommended 0.7 minimum for my speaker. This design would be better suited for a 10" subwoofer. My other modifications to the plans included some 31 degree angles- one on the lower edge of the 4.25" piece, and two on the 6.25" piece to form a parallelogram. This is to facilitate better joints that are easier to bond together. The 31 degree angle may be off, as my trig is a little rusty, but it seemed to work fine for me. Pictures of the finished box are here, and should help you visualize what I mean regarding the angles, particularly the "Enclosure Bottom Angle" photo. These are the major components that I used for the box:

1. Three 3/4" 2' x2' Birch veneered MDF panels $18.87
2. One Radioshack Speaker Terminal $4.99
3. One Alpine SWR-1221D 12" Subwoofer

I built this at the Offutt Air Force Base Wood Hobby shop, so I had plenty of tools to work with. You should need at least a table saw, a jig saw, a belt sander, a drill, a small bit for pilot holes, and a countersinking bit.

 

Looks nice....I built the same box.

To make up for the slightly low box volume, fill the box with some poly-fill. This will help eliminate boominess associated with a smaller than spec box.

You may also consider making the top deck bigger than the rest of the box so that it flush mounts cleaner...

take a look

 

ive been having trouble finding carpet that matches our interior.
my shop use to be able to order it but now they wont

so any recommendations on where to find good color match?

 

www.hardtopguy.com

I dont think its listed, but email him and he should be able to get some, as he works for a Honda Dealer (at least I think he still does.....used to work at one, but then moved I think).

John

 

for carpet the charcoal gray one should match.



http://www.partsexpress.com/pe/showdetl.cf...tnumber=260-765

 

Parts Express

They also carry the polyfill, although....so does wal-mart!

 

[QUOTE=Boosted04S2k,Jan 29 2006, 10:05 PM]

 

1 sq yard sould cover all the visible portions.....

I used wood glue during assembly and silicone to seal the interior joints.

 

where do you get the MDF from? Thanks


D.

 

Home Depot. Lowes. Lumber Yard. It is very common.