Thought my radio didn't sound right so I checked my Fad/bal and sure enough, no sound from right rear pass speaker. A closer look indicated all wires hooked up. I also discovered that only the tweeter is getting a signal. All factory '04 premium with amp. I'm guessing bad amp or head unit. Any other thoughts? Thanks.

BC

 

had this happpen with my stock tape deck was only sending usable power to 3 out of 4 speakers switched it to a sony and bamn ming you i had brand new sony 6x9's in back