[Dynomite]

I am guessing ........ that sounds like a wiring/plug issue. See if you have 12v at the orange wire (black wire grounded) to the speakers (just disconnect speaker plug and test the plug input (female side) with radio/CD on (switch on)).

If you have 12v on the Orange Input wire, switch in a known good speaker amp/plug. You obviously have 12v on the other three speakers.