Do you know how many volts if any are coming off of the head unit?

Hey Stipud thanks for all your help. I've posted a few pics I took tonight - still need to clean things up and tweak but everything sounds great! I seem to be getting engine noise thats noticeable when the Vol is turned down a bit - i added 2 radio shack ground loop isolators (270-0054) but I am sti...

bfowler: thx for the welcome. "The stock amp also has built in crossovers, which cut off certain frequency ranges for the different speakers. For example, the front speakers will only play treble, the door speakers only midrange, and the subwoofers only bass" :( And there lies my problem. ...

I decided to upgrade a few things in my 2001 9-5 wagon (8 speaker system) I installed 2 amps, component speakers in the front, full range in the rear doors and a sub in the back. After careful consideration and with the limited amount of Signal Processor & OEM Interfaces around I went with the R...