Is all your gear on one plug or circuit, meaning components on one circuit and amps on a seperate. If so, you may have a ground potential issue.(use an extention cord and test by plugging all devices and amps in same circuit) I am presently experinecing the same thing and found cheater worked on my pre-amp and amps, I basically lifted the ground..
Confused about the x-over issue, see if you can borrow the same preamp or another and test.
Matt
Confused about the x-over issue, see if you can borrow the same preamp or another and test.
Matt