Gents, I am close to taking a loss and selling off some components of mine as my home theater is frustrating me right now.
I previously had a Marantz MM7055 A/B 5 Ch amp. I just upgraded to a McIntosh MI347 7 Ch class D amp. Within 2 weeks, I would notice my surround channels would ‘clip’…cut out sound, then come back. Sentry Monitor has been activated. My dealer swapped the unit, and within 2 weeks the problem is back.
I had the Marantz and now the McIntosh hooked up to a P12. Readings are 375 average and I see peaks at 500. I have been told by others it could be the P12 is not giving the unit enough power and that is causing the sentry activiation. But on just 1 or 2 channels? Wouldn’t the P12 shut down?
I have the McIntosh MI347 now plugged into a McIntosh MPC500 power controller. I will report back if that fixes things, but I am curious.
Could it be the MI347 doesn’t like the P12???
I also have a McIntosh MX160 plugged into the P12. Could it be that IT doesn’t like the P12 and is thus putting something in the outgoing XLR signal?? But why wouldn’t my Marantz or other 3 M1200s exhibit the same problem if it were from my processor?
List of components plugged into P12
65” Sony TV
Panasonic UBDP9000 4K Player
McIntosh MI347 amp
Martin Logan Illusion Center Channel (woofer amp plus panel charge)
375-500 watts is all I have ever seen on screen.
I am about to either swap the McIntosh amp for 2 S300s or the P12 for just a regular Puritan Conditoner