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Can anyone please help with the mathematics?
Eric,I can't tell you how to do the calculations but thought I would share my experience bi-amping my IV jr's, since others may be in the same boat.I had never bi-amped a system but wanted to try it, based on the comments I read. I tried to figure out amp sensitivity and so forth but got pretty frustrated (my technical knowledge of electronics is limited . . . ). I ended up buying an NAD C275BEE amp (solid-state). I was running a pair of tube amps as monoblocks (Golden Tube SE-40's). I reset one of the monoblocks to stereo and use it on the treble/mid section, and the NAD on the bass modules. The NAD has a little dial on the back to set the output level. After setting up the bi-amped system, I played very familiar music and set that dial so that what I heard sounded about the same as it had previously in terms of treble/bass balance; this gave me a good starting point. Then I made some small adjustments in the output level as I continued to listen.I might get better results if I could do the calculations, but I have been very happy with this combination; the ears seem to do a pretty good job! I cannot hear any discontinuity or lack of integration between the two halves of the speakers. Maybe I just got lucky, but this could be another way to approach bi-amping for those of us who are technically challenged.
I'm driving my VR5 Annies with McIntosh amplification...C500P preamp and MC601 monoblocks. I also am running a pr of Velodyne Optimum 12 subs crossed over at 60hz. Me like!
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