I want to build my own sub box...

[DrumminBoy]

Are there any sites that have plans and layouts for a sealed sub enclosure?

[styldaccordngly]

your best bet would be to contact the manufacturer of the sub, and find the proper dimensions for your specific sub.. and build it according to their specs

[blind34_1]

ditto...
rockford fosgate has a lot of useful info on their site.

This is weird. I'm online right now to get box plans for my subs. But you have to think...80-100 bucks with buy a dual 12 box. say about 50 bucks for the wood. I'm half tempted to just buy one.

[SofaKingSmooth]

just type in car audio enclosure measurments in something like google and look around