custom box
Electric Boogaloo...
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Joined: Mar 2003
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From: Want to play a game?
Rep Power: 328 
I wouldn't start with the transmission line box CPL john posted for a first box I've ever built. Those are very precise designs, and require lots and lots of scheming, planing, and preciseness.
Were this the first box I have ever built, I'd build a sealed enclosure, as you pretty much can't mess them up (unless you don't give the woofer enough airspace.). Don't forget tofigure in displacement.
If you're planning on building more than one, you might want to invest in the loudspeaker design cookbook, as it's a valuable read for newbs and old timers in the audio world alike. Lots of info is out there to be learned.
Some sights I'd recommend looking through(other than here) are www.termpro.com
www.the12volt.com There are resources out there, but you need to be more specific as to what you're looking for out of a "custom" box.
Were this the first box I have ever built, I'd build a sealed enclosure, as you pretty much can't mess them up (unless you don't give the woofer enough airspace.). Don't forget tofigure in displacement.
If you're planning on building more than one, you might want to invest in the loudspeaker design cookbook, as it's a valuable read for newbs and old timers in the audio world alike. Lots of info is out there to be learned.
Some sights I'd recommend looking through(other than here) are www.termpro.com
www.the12volt.com There are resources out there, but you need to be more specific as to what you're looking for out of a "custom" box.
Joined: Sep 2004
Posts: 4,559
Likes: 0
From: MA
Rep Power: 310 Two more bits of advice for you.
1. Think long and hard about which ends are going to overlap to account for the wood thickness. For instance, a box that is 12" tall might have a 12" front and back, but the sides might have to be 10.5" inches tall if they go between the top and bottom and you are using 3/4" wood. . .
2. Cut the hole for the woofer(s) in one of your sides BEFORE assembling the box. That way, if you F it up you only have to re-cut one piece
Especially if you are using a jig saw and especially if you are particularly uncoordinated.
1. Think long and hard about which ends are going to overlap to account for the wood thickness. For instance, a box that is 12" tall might have a 12" front and back, but the sides might have to be 10.5" inches tall if they go between the top and bottom and you are using 3/4" wood. . .
2. Cut the hole for the woofer(s) in one of your sides BEFORE assembling the box. That way, if you F it up you only have to re-cut one piece
Especially if you are using a jig saw and especially if you are particularly uncoordinated. 
somebody had posted a DIY on building a custom fiberglass box and had good pics and details also. check out the jl audio (i think) sub box that hides in the corner of the trunk behind tailight
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