the Ghost of the Buzzing Halcro's has come back to haunt you.
but seriously, maybe try moving the amps to another room with your surround speakers and Capitole and see if that eliminates the buzzing......you may have some sort of RF that is being recieved by the amps in that room......or try the amps in someone else's system.
try removing the Panamax from the system temporarily.....there may be a conflict someplace.
just a few thoughts from a clueless one......
but seriously, maybe try moving the amps to another room with your surround speakers and Capitole and see if that eliminates the buzzing......you may have some sort of RF that is being recieved by the amps in that room......or try the amps in someone else's system.
try removing the Panamax from the system temporarily.....there may be a conflict someplace.
just a few thoughts from a clueless one......