Well, after a good long run with my Strata III, it finally developed the popping/crackling sound I've heard so much about in connection with REL's ST-series subs. I pulled out the amp and resistor R8 looks crispy, plus there is some browning of the board around it. I ran across this thread here:
http://www.diyaudio.com/forums/solid-state/198466-anyone-here-own-rel-sorm-iii-sub.html...which addresses the problem (Storm III, same board, slightly different configuration). Looking for someone in the Nashville area who knows his/her stuff and can help me get it back into action. Would appreciate any suggestions!
Thanks and happy listening, Jeff A.