Passive biamping question

I'm not sure what you mean by passive biamping. You won't double your power by using 2 channels for each speaker; each channel is still 100 watts. You are, however, in a position to increase you sound quality if you do a vertical biamp. You can do that by running the signal from your preamp to the inputs on a pair of channels that share the same power supply. Then take the left and right signal from those 2 channels and plug them both in to one of your speakers. One speaker cable goes to the highs and the other to the lows on you binding posts. Do the exact same thing for the other channel.

Kr4

Sorry, but I just noticed your last comment. I'm not sure what you mean. Are you saying passive biamping is what I'm calling vertical biamping?

Maybe this info can help you make a decision. Currently, I'm doing a vertical biamp in my own system. I'm very happy with the results. To be honest, I've never heard of any negative downsides to doing it this way. But after reading Kr4's post, I think that some caution may be necessary. It's entirely possible that it may not work the same for everyone. The main idea behind a vert biamp it to use work both amps the same amount (basically what I said in my first post.). I don't see how you can have any negative effects doing this way, but that doesn't make me right.

Based on that, I would find a way to demo a vert biamp system with the components you are going to buy. Also, the components in my system are known to sound very good when configured this way. (2 Ayre v5's powering Vandersteen 2's.)