Just to answer your basic question:
If, for example, the MC352 is pushing 200watts per channel, is half or that power being used to signal the sub amps? Am I wasting power just to send a signal or do the sub amps somehow filter out a line level signal?
Answer: No. The sub ams are not drawing any current from your McIntosh, they only take in the "info" from it (i.e, high level signal) and then amplify it to the woffers.
If, for example, the MC352 is pushing 200watts per channel, is half or that power being used to signal the sub amps? Am I wasting power just to send a signal or do the sub amps somehow filter out a line level signal?
Answer: No. The sub ams are not drawing any current from your McIntosh, they only take in the "info" from it (i.e, high level signal) and then amplify it to the woffers.