I got a custom sound bar that i made for my tj that will fit 2 6x9s I used 3/4ths wood and its black carpeted. Check out my car domain.. here is linky to the exact page.. http://www.cardomain.com/ride/2512831/3 That was my first bar on my car domain which was an experimental.. the one i'm trying to get rid of is my 2nd one which is preatty much just like the one in my car domain just thicker wood. It sounds way better than the speakers than were in my stock bar... I made it a bit skinnier so it doesnt go so low into the head of the person seating in the back but ended up just mooving my 1st one up higher and not needing the 2nd one.
btw i have pics while buildign the 2nd one. The 2 sides are separated. Also now its clean and it doesnt have the black stuff inside it which is from when i cut the holes in the carpet
On the 2nd pic you can see that the far side is on angle and the boards are not cleaned lined up.. i actually cleaned it up so its all nice and flush so preatty much its on an angle on the side that points towards the back
should i line the inside of the "metal box" i'm going to make for better sound quality? all i'll be using is probably 2 6x9's. no subs. or can i just mount the speakers straight into the hollow metal box?
With louder speakers metal box will create unpleasent ringing. Thats why you dont see any good speakers made from metal. What you can do is seal the wood or something of that sort. Preatty much MDF Wood is one of the best materials to make speakers out of. My box is made of 3/4" MDF and has aproximately Volume of 430"3 per side
As to make the stock metal bar sound a bit better i added a some patting from a pool filter since thats what i had. Foam padding from a couch cushins will also work. You are not trying to get as much as you can in there. Just enough to cover the sides is good. Too much or too less is bad so keep that in mind.
I dont think 6x9s will fit in the stock sound bar even if you cut it. You gotta get something to extend it.
I'm currently learning how to make BANDPASS speaker boxes. Bandpass boxes can make a 6x9 speaker powered by the head unit sound like a 10" sub getting around 200 watts in a sealed box.