Hello hello. First off this is my first instruct-able and as such i welcome and questions and comments that come my way and will entertain them as best i can.

My scooby is kinda small ... so space management is a must and was my main concern for this build. This box can built by any novice (like me) with minimal effort and time for around $100 in material (excluding the sub/amp). Enjoy

Things you will need:

1) 1/4" thick {the thicker the better} acrylic or plexi glass
2) quilt batting
3) acrylic glue {i hear acetone from a saloon works also but not sure}
4) silicone
5) fine pointy paint brush
6) 1"- 1.25"self drilling #8 or #10 screws to attach the sub-woofer.
7) duct tape and sand paper
8) jig saw or dremmel
9) sub-woofer and amplifier
10) drill, basic hand tools, and a socket set
11)  table saw or circular saw will make your life much easier
12)i think that's everything... lets get started!

Step 1: Can you feel.... the bass?

first do some math and measuring as every car will be different. i have a 2007 Subaru Impreza 2.5i and i came up with an enclosure size of 5and 7/8" total  enclosure height {6.75" tall with sub }  12.5" wide and 14.75" long. 

After you measure find the surface area of the cube with LxWxH for each side (a cube has 6 sides) and go out and procure your acrylic... or lexan... or whatever.

***side note*** i chose acrylic b/c its cheaper than lexan and way better than wood for its size... at least that's what i think i learned from all those forums.

*** fun fact ***  the enclosure is also not supposed to be a symmetrical shape due to re-verb and sound distortion .... something along those lines.... but i have had little if any problems like that with my build.

*** also under my seat i have re routed some cables for the air bag sensor and bent some metal out of the way and gained some extra room***

*** remember to leave height for butt clearance if you ever plan on having a passenger***
Thank you bsodgergren for clarifying. I did not know that. ( obviously ) haha.
acetone is what you use to clean up the acrylic glue that you inevitably get over every thing. <br> <br>you don't use acetone to &quot;glue&quot; or weld acrylic together. <br> <br>Acetone is also good for cleaning up fiberglass resin.
thanks i made one of theas out of mdf and it sounds great when added to my stock system
Happy to hear it went well!
How did you cut your acrylic? i tried a couple months ago to make a little speaker for my room and couldnt get straight cuts with a knife or saw... Nice subaru by the way...
Also hole saw's work very well
Sorry it took so long to reply I have not had time for projects in a while. I used a whole saw and a fine tooth jig saw cuz I didn't need it to be a perfect cut for the speaker hole. For the clean cuts I used a table saw at a low blade setting. ... If it is thin acrylic I would suggest using a razor blade knife to score it and then snap it... Practice first on some scrap piecesd
ahh. well thank you. i love my suby. anyways. i used a table saw to cut most of my acrylic since it was almost 1/4 inch thick. it was very effective ... i also used a hand held jig saw which worked better than expected. thank you for the question. please let me know if i can help with anything else.
note: it fits way better when you don't switch to a diff. sub after the box is completed because it would fit way better if it was even 1/4&quot; shorter.

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Bio: electrician in pittsburgh.
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