Alright. I want to run my 50w traynor bass master at a level that approaches full output. I would like to do this by running the speaker out into a 100w dummy load - perhaps four simple 25w resistors and a crude heat sink - and by hooking a speaker level di box into the parallel speaker out. I then would like to run this into my delay pedal, then into the left channel of a good solid state pa amp and then in to one driver in a 4x12 cab for a band practice to small gig type of situation. I plan to have my guitar see an a/b box, with the b side running into a roland jazz chorus sixty (sans speaker for easy load out, maybe even build a head cab for it if this sticks) then from its line out in to the right side of the power amp and to the second driver in the 4x12 - the transplanted Roland or possibly a weber 12f150. The bottom two slots in the 4x12 would be left empty. Upon doing some research I have found that I am not the first one to have this idea.. I guess he used a variac to keep his amps from blowing up. My question is.. Were the amps blowing because of being dimed for hours on end, or as a direct result of the dummy load not being a "proper" thing? Or hm.. Was the variac just to extend tube life? Was he blowing too many tubes mid set? Thanks for any help. Please don't tell me to "just buy a hot plate man".