sounds like the wire is loose on the speaker itself its only a couple screws to take it out. If the wires are still intact on the speaker then the speaker is probably blown

I am doing a engine swap on my 95 gst and was wsondering if i should keep the luxury of having a a/c for the hot days or if it really makes a big difference if i remove the unit? I heard that it adds like 5 horse which isnt alot but its power. I am going to be running a mild built enginr...