I had Tweeter install my Alpine SPX-137A 51/4 components and they sound sweet. I had them first hooked to my old ALphasonik amp and then connected the Alpine V-12 amp and man, waht a difference. I ended up having the tweeters installed to where the OEM 2002 ones are---but flush mounted. I conflicted having them custom installed on the A-pillars and decided that is the perfect location for sound. I will probably have a set of tweeters installed on the A-pillars later on. Installation for the custom job was going to be around 500.00. I will be taking pictures soon w/ the cd changer in the secret compartment--white powder coated calipers and other minor mods--stay tuned

 

arent those the top-of-line aplines?
how was the depth mounting of the mids?
any problems?

 

They are the top line on Alpine. There was no problem w/ mounting depth. I went w/ the 5 1/4 ". I am even considering purchasing another set and placing them in the rear. They sound really nice! Crisp, clear and loud!