Finaly got the set up complete for my tri-amp project. Ended up using an Ashly XR2001 crossover, Mackie M1400i amp going to the 2245 subs with 300 a channel, Mackie M800 amp going to the 2226 mids with 175 a channel and 100 watt tube mono blocks going to the horns. All balance lines for interconnects. This did bring any hum to a point where you have to have your ear right in front of the speaker to hear it. Finally settled on the Mackie amps after many trips and exchanges! Huge torodial transformers in them and virtually silent. The system sounds great. and the wire..... there are wires, and lots of em!

Bill