|Actively bi-amping B&W Matrix 800's|
The mid and hi pass filter for the B&W Matrix 800 are of very high quality. The mids and highs sound very transparent even when driven passively. IMHO, the majority of the current drawn from amps goes to the woofers therfore just going active ...
|Gain matching in a biamped system.|
The two amplifiers, I suppose they are different, should not differ too much in their sonic characteristics.To match the gain, use a sound level meter and fix an attenuator to correct level from the more efficient amp.