The max MDF ring you can make will be 3/4" thick. That ought to give you plenty of room, even if you can only use 1/2". 1" MDF will allow the bottom forward part of the speakers' surround to hit the plastic door panel. I used 1/2" with my Nakamichi speakers. I am going to add another 1/4" when I install my Morel Hybrid set. Good luck, you should have no issues.
The Naks are 2.68" deep. With the spacer, I have no issues at all. I don't think you will either if you go 1/2" like me, or 3/4". Can't wait to hear your impressions of the Focals - they're supposed to be very nice
those install pictures were great. i think i'm going to set mine up similar to yours, at least thats how i had it pictured in my mind. Is that shiny material on the door dynamat (or something similar), or is that stock material - I've never taken my door panel off, thats the first i've seen the insides.
Yeah i'm looking foward to hearing the focals. I was looking at getting a nakamichi amp, do you know much about them?
I used Raamat. People here and at Montecarloss.com have recommended it before. It can be bought through here http://www.cureline.net/lex/raamsale.htm much cheaper than dynamat or others and seems to work very well. After having the Nakamichi stuff mounted on the doors, make sure the crossovers don't rattle internally as my Naks do. I had an irritating rattle in the right door at certain frequencies and after taking the panel off numerous times, it ended up being the plastic cover on the crossover box and the circuit board on the inside of it. Very annoying. Of course, if I would've mounted the crossovers somewhere else, I would not have had this problem. The new Morel crossovers are going in the same place, but don't appear to rattle at all as they are solidly encased in plastic.
The door metal, once you remove the plastic panel, just has a vinyl-like material covering only parts of the metal door. If you Raamat it, you'll block a lot more road noise. I didn't even bother putting the OEM piece back. I just saved it in case..I think the most road noise comes from the firewall (which I didn't spend time covering), but covering the doors did help a little. There are a few gaping holes in the door panel (weight saving? access to window mechanisms..).
As far as the Nak amps? I am happy with anything I have ever seen or owned from Nakamichi (my sub is very well-built looking). I think you'd have no issues. I am running two MTX amps which I guess would be in their mid-level line?? They perform fine. I don't have any first-hand experience with the car amps, though. There are a lot of folks here who have some good advice on amps, though. I think as long as you match an amp to your speakers properly (real RMS numbers) you're going to be happy.
Cool, thanks for all the pointers. I'll definitely have to look into that raamat, definitely what i was looking for. I don't know how soon I'll be doing my install, probably not till it warms up some more...but I'm looking foward to it and trying to get things planned out.