Just curious, you have 2 MC275s? Another thing.. In stereo.. The 275 sounds better, to me.. They pass muster in mono, BUT MUCH better in stereo..
240s and 225s also... Stereo or dual amp... I like dual amp mode..Been a while. I have to look.. Some ways sound better than other ways... You can series or parallel and bridge (stack) amps to boot.. The old Macs were industrial for sure..
Regards.