Contour Enthusiasts Group Archives Forums Modifications Audio ATTN: Takearide

WHat sort of box did you use/build for your two 8W3-D4s? I have never built a box but I am no stranger to tools. Let me know if you could help me out. The biggest question I have is: When building a box (sealed) for two subs, do you make two seperate chambers in the box or one big one?

Thanks!

There will be no audible difference between one or two chambers. There are a couple of small advantages to having two smaller chambers, though. First, the wood that seperates the chambers will act as a brace that the bigger single box may not have (unless you add bracing). Second, having two chambers will protect the other speaker if one blows. If you had one chamber and one of the speakers blew, you would essentially have a ported box tuned to a middle to high bass freq which could cause your other sub to unload and possibly damage it.

I have a fairly unique setup with my 2 JL 8W3 D4's firing through the rear package shelf. They are mounted in .3 cu ft sealed boxes with fiberfill. As slamming bass was not my goal, going with a small box was fine. My JL 8W3 D4 with dual 4 ohm voice coils are wired for a 2 ohm load. I have an older Sony 1002HX amp which is good for 400W at 2 ohms. Second, build or have built for you sealed boxes that will fit under the shelf. Mine are trapizoidal to match the angles under there. Third (the scary part) cut two 7" holes in the shelf. One between the seatbelt anchor and the trunk hinge, it will just fit. The other to the outside of the existing hole (in order to make it symmetrical) Fill in the existing hole(I welded in a patch, but I realize that I am crazy) Cut matching holes in the cardboard and carpet cover. Hang the boxes from the shelf. Wire. Enjoy.
In addition to not rattling the trunk, this setup also preserves cargo space.


By the way, if want a setup like this without all the fabrication hassles, buy the car, it is in the classifieds.

I was thinking the same thing, but mounting them in the center of the rear shelf. I saw an isuue of Car Audio that had this guys Lexus SC400 with two 10" Solo Barics(round, not square) in the rear shelf and it looked COOOL! Guess I will have to play!

Thanks!

-Joe