My original plan for doing these mono's was building a power supply that would double down into 4 ohms, and drive a 4 ohm load hard all day. Bridging an amp brings with it inherent limitations. Low impedence loads are one of them. You also double the noise and distortion. Paralleling the outputs into one channel will spread a 4 ohm load over the entire backplane. The 21196's are going to be pretty close to their theoretical max SOA. So I was hedging my bets. My bud in Phoenix, Stephen , wanted an amp to drive his K-Horns as well as a set of Bryston 7BST's. A monster mono won't do that, the 7BST's are a 900 watt mono, but not near the power supply, nor do they sound as good to my ear or Stephen's either, thus the order. He has a little 400 I did for him and he loves the sound, a standard WOPL 700 in his application would not have lived very long, IMHO, his either.
So......You go with only one Zoebel network between the two backplanes. Parallel the output sections, use only the right hand side of the control board. To parallel the output sections, use a good jumper from one "output" hole to the other, the same output hole the speakers are tapped to...Joe explained it to me once and we'll have to check with him again , but that's the gist of the conversation.
Glen , those toroids are only 624va under load. You won't get much more than a standard 700 current wise, that's why I was going with 2 per side....
