my amp just starting smoking!!! so i took it off in its gone to get repairs. so i hooked up my sub to the rear speaker and took the back 6x9s off. right now i am only using one connection is there way i can connect my both rear spkr wire n bridge it or connect all four so 50x4=200watts.
NO, NEVER EVER EVER power a sub with a head unit. You're asking for disaster. You're better off just totally disconnecting the sub. And a head unit cannot be bridged, for future reference.