Quote:
Originally posted by Amir:
How do you handle the differences in gain/input sensitivity and power of different amps when you horizontal bi-amp? Do you use an active crossover? How about differences in speed and characteristic in the amps.


Thanks for your comments. I have installed potentiometers in all my power amps that control the gain. Otherwise it would be impossible to get the differing amps balanced. The crossover is a custom built job that has crossover frequencies at 60Hz for the sub to woofer, and 1,200 Hz for the woofer to tweeter. Except for the subs, the mains are completely horn loaded.

If there is a difference in "speed" between the amps, I haven't noticed it. All of them have been very extensively modified in similar ways, so maybe this is equalizing out some of the differences. Also, of course, all the amps except for the sub are tubed. The tweeter amp is a single ended triode.