I want to put a subwoofer in my truck. I want to build my own box but it will have to be small to get it to fit somewhere in the truck. I was wondering what tips should I use? I have never built a box before will I just need to nail 4 boards together into a square cut the whole for the sub add the connectors for a speaker wire on the back and fill it with the Poly Fill stuffing stuff crutchfield sells? I was also thinking put silicone around the edges seems easy enough but I am sure there must be more to it than this.

 

http://www.termpro.com/articles/buildbox.html

and possibly better..

http://www.bcae1.com/spboxnew2.htm

Dont forget to first go to your sub's manufacturer site, or in the documents it came from... Find all the requirements and specs. This will guide the appropriate size and such.

 

You should use MDF for the "wood" and .........I wouldn't use nails.........do a bit of searching. There are tons of threads on building a box - Team-Integra has a pretty good DIY written up for it. With a little reading, it isn't that hard at all.

 

I've just now seen your post, so it's probably too late to offer advise. But if it's any help, I've been around stereo's and competed in some competitions. I would recommend using 3/4" MDF board for the building material. I would use either 1 1/2 or 2" dry wall screws and line the box with liquid nail. Also if you are running the subs on separate channels, put a divider wall in between the subs for each channel, this prevents the subs from working against themselves if they are on different channels and not tuned exact. I have never used the polyfill, but that's up to you. But definitely build the box to the manufactures suggested dimensions. You need the right cubic feet of air space, the box is what makes a stereo.

YellowCVC98EK

 

I ordered the sub and amp and some pollyfill stuff haven't gotten it yet but ordered it and will wait and build the box when It gets here so I haven't built it yet.

 

Like those guys said...use MDF board because it is definitely easier to use and works best. The calculation you need to use in order to determine your box internal volume is : (inch) L x W x H= ___ divided by 1728 The sub(s) you have should have an "optimum" volume specified from the factory.

 

.75"-1" MDF, Some Wood Glue and a nail gun (Or wood screws)

The wood glue is what will hold the wood together more than the screws/nails.

 

https://honda-tech.com/zerothread?id=868739

Theres what mine looked like. Its alot of work. measure 15 times, cut once, and use 3/4 inch mdf and drywall screws. Use lots of silicone sealant, and let that dry before you install the subs and play them. Seal the terminals in and the subs with the silicone. Any questions jus hit me up.

 

I got this tip from a local shop. When you build your box, put screws every 3 inches, along with plenty liquid nail. Let it dry, then trim off all of the liquid nail hanging out of the seams.

Now the real trick, pickup some fiberglass resin & hardener. No fiberglass required. Paint/coat the entire inside of the box with a thick layer of resin, then let it dry. The box will be 100% air tight. The resin seals the entire inside, not just the seams like caulk. Use a cheap paintbrush, & wear rubber gloves.

 

I built my own box for a JL W7. Its a pretty powerfull speaker and costs about $600, so my box had too be perfect too handel the power. All the advice ive seen so far has been great, but remember to drill pilot holes with a drill before you try to drive the drywall screws into that thick of a wood, if you dont you will probably have hairline cracks that later can really mess stuff up. Good luck!