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do component speakers come with amps already? because all the pictures im seeing have 2 speakers 2 tweeters and two amp looking things
and what is the diffrence between a mono and 2 channel amp
what does the channel do?

Those are crossovers, not amps. They take the low fequencies and send them to the woofer, and the high frequencies and send them to the tweeter.

comps come with a cross over which filters highs and lets them go to the tweeters and it filters the mids out and lets them go to the woofers which equals better sound and less distortion. a 2 channel lets you have a left and right channel which you need for a good front stage. a mono which mean 1 of course is only good for subs because you dont need a left and right sub and they usually produce way more power then coax/comps can handle

well how much diffrence would the sound be if i ran one 600w sub instead of two 300w subs?

depending on what they are rated at. but you would probaly be able to make it a little louder with 2 subs at the lower wattage because they should still be able to hit their xmax at 300 but that depends on the subs too.

so sinister you already recomended a 600w elevation what would recomend for two 300w? and how loud do you think four kicker 12" comps could get since there only 150w each?

they would get pretty loud but so would 4 elevation audio comps and they sound better and are a 100 bucks each for 10"s and take about 200 watts. what do you want your system to sound like loud or loud and good or just good sounding?

so sinister you already recomended a 600w elevation what would recomend for two 300w? and how loud do you think four kicker 12" comps could get since there only 150w each?

Go with sinister on his 4elevation audio ideal, or mine with 4 resonant engineering subs. RE10's are about 60-65 I think. If you can fit four kicker 12's then you should go with the RE12's or the elevation comp 12's. Sound a lot better, and cheaper. And don't forget no one you know, will have them :)

everyone and their dog has kickers so thats not too cool and to me they dont sound very good compared to the elevation audio ones.

if you want to learn more about car audio so you have a better understanding of amplifiers and speakers etc, read through http://www.bcae1.com
it answers a lot of your questions, as a beginner in the hobby.