How do I change speaker size in my car?

I might be getting 2 speakers, a sub, and an amp I am looking at getting a 4 channel amp. 2 channels for the front speakers, and 2 bridged channels for the single sub. My question is, nearly every amp has an RMS beginning at 50 at the VERY LEAST, the...

This is driving me crazy!! I own a 2006 Town Car Signature with the standard CD / Tape player with 4 speaker setup looking to upgrade to a different system. Depending on where you check and who you ask, every body has a different answer for the size...

When I'm replacing bad speakers and ordering new ones off the web, how can I make sure that the mount holes on the replacement speakers are the same exact spacing as the mount screws on my car? If (just as a nice round number - not the actual size that...

My car's stock speaker size is 6 3/4 but I bought 6 1/2 speakers and they are just a bit too big. Is there a bracket adapter of some sort that I can use to make them fit? Helpful answers are much appreciated. ;D

Do I have to change the stock car speaker if i put a new 12"sub?

I have a 2008 Chevy Impala and it has 2 tweeters in the front above the dash sort of on the frame of the car and i cant find out what size they are, if you could tell me where to find out or how to pull the pannel off or even what size they are that...