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Discussion Starter · #1 ·
I am going to try and install my 6.5" JBL C608GTI MKII's this spring break and I need some help building a speaker bracket/mount out of MDF so I can mount them in my doors. I'm going to be putting these in a 2002 Pontiac Grand Am SE; it has 4x6" sock mounting holes, 1-2" from the mounting hole to the windshield, and about 3" from the mounting hole to the door panel. I want to make them fit without having to adjust my windshield track and without having to modify my door panel.

The stock mounts curve the speakers up toward the driver and passenger and the place in the door panel where the speakers are curves up also. I would like to build a mount that angles the speakers in this fashion also by maybe sanding or cutting the custom mount to fit flush with the sheet metal (I want to be able to seal it off). Wish I could post pics right now to explain it a little better but I cant right now. Will try to get some pics up within the next few days.

Will a foam baffle with the end cut out of it work and protect the speaker well enough from water damage? Or should I try to build one? I know I will need to waterproof the MDF.

Just a brief explanation or website/thread showing how to do this right and what I will need will suffice.

Here are the speaker specifications:
Cutout diameter - 5-1/8" (131mm)
Mounting depth - 2-11/16" (69mm)
Xmax - 1/8" (3.44mm)

http://www.jbl.com/resources/Brands...-US/OwnersManual/C508_608GTiMKII_OM_(web).pdf

Also if anyone can give me way to build a better mount or make it sound better, that would be nice. I saw a website or thread awhile back about how to get a few more db's out of your door speakers with a few simple sealing and deadening tricks but I can't remember where.

Any help is appreciated and if you need any more info then just tell me. Thanks
 

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first, I would not use MDF in a door. doors are inherantly wet locations and MDF soaks up water like a sponge and then it molds and falls apart.

best material to use (dont laugh), go to walmart and buy a couple cheap cutting boards made of nylon. waterproof and easy to cut.

what kind of tools to you have to work with?
 

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Discussion Starter · #4 ·
I have a rotary tool, sander, drill, ect. I plan to waterproof the MDF, or would you still suggest getting the cutting boards? I have seen some guy use a solid sheet of plastic. where would I get something like that?
 

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Cutting boards.... cheap... easy...

A jigsaw is ideal for cutting it, the rotary tool melts and gets stuck...

There's also a TON of spacers avalible you don't have to cut...
 

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It may help to know that the cutting board we refer to is generically called HDPE for high density polyethylene. This may help to know so that one isn't limited to you average retail store having to buy a ton of cutting boards. You can probably buy it in bulk and in varying degrees of density/hardness and thickness from larger suppliers. Maybe others can chime in as to where one can source this as I really am not sure. But I know you can
 
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