Now that I've been in cars with 4 6x9's all around (stock), I realize just how better the balance is.

So, even thought the 6th gens have 6.5" in the doors, is there a reasonable way to get 6x9's in there? I don't want to repanel the entire door. I'd like to try and utilize the 6.5 space for the 6x9. Can you custom fabricat just that section?

Money IS an object, so I can't go hog wild with the fabrication.

 

might help if you tell us what kind of car it is dummy, lol

 

like my sig says: 1997 civic ex sedan

 

i doub tknow anything about civics, but i doubt they'll fit.

edit: just read that you want to custom make something.. sorry, still cant help ya h:

 

i don't think it would be worth it. i have put 6x9's in truck doors that were originally 5 1/4 openings. the main thing you need to worry about is the window regulator(the moving parts might hit the back of the speaker). the only way to fit that size in the door is to actually cut the sheet metal with a saw(i use a air tool). the opening should be the size that would accomodate a 6x9 speaker. you can use dynamat in the opening to make a surround for the speaker. also once you get the speaker in there, you have to worry about the door panel pressing on it or not clipping in all the way around.

 

What do you mean by balance?

 

6.5" cannot produce the low end of the sound spectrum like the 6x9"s. On top of that, being different speakers, simply have a different response. This results in a different balance of sound between front and back speakers. That makes neutral fade, fade++, fade-- to be different in response requiring different equalization settings. The best would be to use 4 of the same 6x9's, like many new cars are.

 

What is your aim here? To try to get the same sound out of all 4 speakers? more bass or what? Just having them aimed different and being the back of the car is going to give them a different responce.

 

I don't know how much this will cost but....
First check out http://web.njit.edu/~cas1383/proj/main/ to get some info on fiberglassing.

Get a saw/cut out tool etc. and hack a space large enough so that the 6x9 will have enough clearance (it doesn't have to fit perfectly)
Build a MDF ring to hold the speaker (it should be larger than the hole you've cut so that it will stay on top)
Test fit the speaker. If everything is cool get something to bond the wood to the plastic of the interior panel. Use some body filler to smooth the lines of the MDF and the panel. For asthetics, try to keep it even on all sides.
****I haven't tried this myself, but others have said that filler WILL stick to plastic with ease****
Tape off all plastic areas of the panel and paint the new enclosure. Once dried, mount the speaker.

Keep in mind I haven't done this myself and can't guarantee it'll work, I'm just trying to think of ways to solve your problem. Do some reasearch into fiberglass to get some more info.

 

Fiberglass help:
1. - "Everything Automotive"
2. - www.the12volt.com
3. - www.glassmanscustomforums.com