hi i am planning on upgrading my old reciever its a technics sa-da10. right now i have a paradigm speakers. fronts: mon.7 center:cc270 rears:micros sub:pw2200 well my problem is that some times when im watching a movie i get an overload problem. and sometimes i dont. like today i was watching lord of the rings movie one extended edition and i got it. but after watching another movie face/off it didnt over load. but after the movie i watched the lord of the rings and i didnt get an overload. i dont have any banana plugs just bare wire.. so i just thought i needed more power.