I re-ran the THX intro to Star Wars I today with my processor crossover set to 60hz and had no problems this time with my Emotiva XPA-1 monoblocks. A couple of weeks ago both of them shut down during the THX intro to the movie with the xover at 60hz.
The Emotiva amps sound great, my only other minor issue is a clicking sound I am hearing from one of the amps during quiet passages. I contacted Emotiva about this and they said if the line voltage coming into the amp is spiking above 130 volts, the auto voltage detection is momentarily switching over to 220 and then back to 110 could be making the sound. I checked the voltage in the outlet with the receptacle directly above the Emotiva amp and the clicking sound came with it reading 120. It is not happening with the other amp at all. I also sat behind the amp for a while to see if the led would switch from 120 to 220 and it did not happen. It doesn't happen often, maybe once every 1/2 to 1 hour.
I had previously owned a Pass Labs X-150 that would also do this. Never happened with my Classe or Anthem amplifiers.
I am in the process of rebuilding my home theater which has pretty much been out of comission for about 5 years. I recently picked up (2) Emotiva XPA-1 monoblocks, (1) Emotiva XPA-5, a Cambridge Audio DVD99 (DVD/SACD) player, Emotiva ERC-1 cd player, and a SVS PB13 Ultra Subwoofer. I still have my Dunlavy SC-IV speakers and a Runco CP760W projector with a Stewart filmscreen. Hopefully I will be switching to HD in the next couple years. I will also need a new processor as I am using my Outlaw 1050 as a preamp which was pulled out of my basement. I am very interested in the Anthem D2V and am also waiting to see what Emotiva and Outlaw come out with in the way of a balanced processor. I had previously owned a Sony TA-E1000ESD then a Citation 7.0, then a Lexicon MC-1, and finally an Anthem AVM20 before the theater had to be used for something else for the past 4+ years.