Hi guys I am having some concerns with my 663. I am running energy c500's,matching center, and 4 energy eas-6w inwalls, 2 energy s10.3 subs for a 7.2 set up. Heres the deals while watching Darknight at +4 volume level my receiver shuts down nothing else. I powered it back on and it was fine. It is well ventilated and has never done this before. Was this a safety issue the the receiver did shut down, or was this a faulty receiver? Thanks for any input.