Rich,
it can be done but not a good ideal, the pre/pro can do the bass management then send the signal to the 507 7.1 input, however, the signal had to pass thu two volume control and it will degrade the sound. why not sell the 507 and use the money buy a multi ch power amp like a used rotel 1095 or a b&k etc...
it can be done but not a good ideal, the pre/pro can do the bass management then send the signal to the 507 7.1 input, however, the signal had to pass thu two volume control and it will degrade the sound. why not sell the 507 and use the money buy a multi ch power amp like a used rotel 1095 or a b&k etc...