I am running a Carvin Redline 1000w head, bridged, into a GK 4x10 and a SWR 18 both are 8ohm, 400 RMS (Yes I know I mix and match alot). I am having an issue with the amp (not speakers, bass, or cable issue) cutting out for 10-15 seconds in the middle of a song, and then mysteriously coming back on without me touching a thing. This is usually mid gig (4 hour rock n roll club gigs). The amp makes no strange noises, just cuts out with no sound being produced. Both cabs are affected (I run them both out of the amp, not daisy chained). The problem is very intermittent. Three gigs ago, it happened during two songs. Two gigs ago, the amp worked perfectly, and last gig it was happening almost every song (until I pulled out my backup amp). This amp is also not nearly as loud as I think 1000w should be. I have to run the gain at +6 and the master around 8 to be heard over the drummer. Any ideas?? Thanks for reading! Also- if the amp is shot, any suggestions of a decent priced amp that will push the cabs I am using? I'm looking at an SWR 550x used.