HI, i installed a new amp yesterday it is 4 channel so i ran my 6x9 on channel one and two and my sub bridged but now my coaxial door speakers dont work but they are run off my HU so i do not know how it could have affected them and stopped them working.
what are the settings on the headunit? make sure you dont have the fade all the way to the back and also check the connections behind the deck to see if they are hooked up and the wires are still in good shape