Hello Mr. Bubble: I don't know if you still use this site, but you said that only 15 to 20% of an amps rms power is used by the tweeter in a bi-amp system. I have a 4x1000w mixer bi-amping two full-range yamaha IF 3115/95 speaker cabinets. The cabinets power rating is around 750w to lows and 250...