i might be in to the high end stuff a bit much but i need to give some input. in the front i have figured out that a MB quart 4" premium component speaker will fit in the opening of my regal, the sound insane and come with crossovers and all of that, then again they also require a amp. kick panels are a must, they work insane, well worth the money, if you are going to buy those it is only logical to get some higher end speakers which also should have a amp. rear stage can be tricky, i used 5.25 in the rear panels between the rear window and the quarter winows, i am happy with them. then again if you have a good front stage then do you really need rear. other option is 6x9s with adapters, DO NOT WASTE TIME with 4x10s, they suck and it is proven that a oval cone distorts the sound, a 6x9 is a exception to the rule because they actually put out some bass, you will not be able to notice low end distortion much if any. as far as head units, the eclipse cd3000 mentioned above is a very good unit for the money, i got one on ebay new for 80 bucks for my girlfriends car, people spend more on stolen decks then that, its great for the money. internal amps on a head unit, for the birds, 50x4?? maybe 10x4! that is noe they sell these heads, if you look at a eclipse head it says something like 12x4 peak right, eclipse looses retards all the time that think that their 100 dollar pioneer 50x4 will sound better.... NOT! the eclipse will toast it in sound quility any day of the week! i personally do not use my heads for powering speakers period. you can pick up a amp to power your mids and highs for cheap. i recently snagged a punch 200a4 for 50 bucks at the pawn shop, this is a true 50x4 and its probably actually more like 100x4 and guess what, very low distortion and you also get built in CROSSOVERS which is also a must in my opinion. like i said above, i may be a bit too high end for most peoples budget but with car audio you honestly get what you pay for. i already hear it coming with people asking me what i run
this is just my regals setup, in case you have not noticed yet i am a huge eclipse fan
head-eclipse 55090 dvd head-no screen
dsp-eclipse 39011 dolby
sub amp-eclipse premium 34230
sub-eclipse 12" titanium
mids/highs amps- eclipse premiums, cant remeber numbers but one is 200x4 and the other 2 are 180x2
front stage-mb quart premium 4", eclipse 5.25 components
rear stage-eclipse 5.25 point source
150 amp alternator
3 optimas
all stinger and tsunami wires
did i mention video.....