Wow! Quite the project. It's the reason I stopped doing car audio and moved to home audio... the whole Left/Right difference in the cab of a car from a far left or right seat. A room can usually sound 10x better with the same set of speakers placed properly versus your best install on a car... I'd move my RTA mic over 1" and you could see a noticeable difference in the car, where on my couch, it takes a few feet to see a similar difference! Definitely "tough" to get a clean, flat response with great stereo imaging in a car. I've got two 6" in my doors and a pair of tweets in the dash (Basically, the "Sten II" speakers), all running off my HU w/ carefully selected crossover settings off the deck. Does very well and I rarely turn it up past 16 out of the ~30 it can go up to! (those speakers are so dang sensitive... but I wanted efficient sound, guess I got it!)
I think I had 1 more graph that I tweaked a bit more, but here was my response after a few sessions w/ EQ, phase, and Xover tweaks. No doubt with better equipment or even more time I could get it better, but it's "good enough" for $100 in total stereo equipment! lol...
http://i95.photobucket.com/albums/l1...comparison.jpg
Have you changed any bulbs out to more efficient lighting (LED)? I did my dash lights. The regular stock bulbs consumed .25 Amps at 12.4v (3.1w). The LEDs, a hair dimmer at the same settings, came out to .014 Amps at 12.4v (.173w). The brightness is definitely a little less, but worth it IMO. I definitely want to do all my non-headlight lamps, but all in good time. Good note on the headlight wiring, I'll have to check into that!
Anywho, hope you get to work on your build sooner than not. Good to have other Neon's still roaming the streets.
