I had similair problem with my 1993.5 G20. My front speaker were cutting out on and off , it was annoying but I lived with it for a while. Then I wanted to replace my AM/FM cassette deck with a cd one. A stcok CD\Radio was like $350.... I said screw that and got a higher power ( volts not amp ) am/fm cd player ( Rockford Fosgate ) . Because of the whole OHM matching thing.
The sound was great and much cleared than stock and then PFFFF! The front speaker did it again. I replaced the front speaker s with stock one.... When I open the door panels I saw the little cracks in the front speaker, I know have stock speaker from Scottdale Infinit (60 pair ) and it sounds great . ( shake the windows all the way around I replaced all the speaker with stcok rears too ) Hope this helps ......
He is picture of old speaker with hole. I have i post on the whole procedure on yahoo at ......
http://clubs.yahoo.com/clubs/infinitig20club
:flash: