Hey Jerry: have a look over at DIYHIFI.org, http://www.diyhifi.org/forums/viewtopic.php?t=300&postdays=0&postorder=asc&start=0 You will find most of the useful info I can provide there. Do you plan to run full range or willyou use subs for the bottom end? I have run 70 volt line transformers backwqrd and obtained excellent results with panels like yours. Very inexpensive too. I you use larger spaceing then you can run two of these transformers to get more step up as well as a centre tap. Regards Moray James.