this is the same issue I had, and with the right speaker! It got so bad that I couldn’t run ARC anymore because the volume levels out of the right channel were too low for the mic to pick up, I also started to get this issue with the center channel. I was trying to hold out but I had to upgrade my AVR a few months back due to the amp issues in the MRX300. I honestly wouldn’t repair this AVR it’s old and outdated now! Get a new one, I bought a Yamaha 780 to hold me over and sound quality wise it’s as good as the Anthem for movies and a bit better than the anthem for music, pretty impressed with Yamaha they also run cool.
Interesting. Another MRX suffering.
I have other issues with my MRX - locking up, not switching HDMI, not responding to menu setup buttons.
It started with the video messing up where overlay was messed up so I had to chose through.
Seems to like it better if I never turn it off.
My office system is a 2.1 setup with a Yamaha A-S801 integrated amp, Paradigm Prestige 15B's and an SVS SB-2000 sub.
It replaced a Marantz, HK, and Luxman before that.
I'm really happy with the Yamaha A-S801, although I wish it did have bass management so that I could use a high pass crossover for my nearfield monitors.
It indeed stays cool, and drives the 15B's to volumes that are as loud as I need in a small room.
But YPAO vs. ANTHEM ARC GENESIS?
I only need support for a 5 channels, + 2 subs
I have my two surrounds in the ceiling due to room constraints. All 5 channels are equidistance and pointed at the MLP - which is more suited to DTS:X layout.
So this is more like a 3.2.2 setup.
I think the object based steering supported in the 540 with DTS:X would offer some benefit for my setup.
Before I got the MRX300 - I had a few AVR's in for audition. HK, Denon, Marantz, Pioneer, Yamaha. I wanted to try all the various room correction to see what they did.
Out of all of them, the HK was the best from a SQ.
The thing I didn't like about most of these is the limitations of channel assignments. Anthem got it right by allowing any combination of audio and video, and duplicating them.
If I want HDMI 1 video input and have a choice of HMDI audio, Optical, or COAX, or analog, I can.
That and the 65wpc amp of the Anthem seemed much more dynamic than any of the others. At the time I was driving 6ohm speakers.
I didn't really care for Audyssey, MCACC, YPAO. ARC just seemed to work in bringing even bass into the room at multiple listening positions.
It was subtle but seemed like the intent was more about SQ than in your face ON/OFF impact.
The real treat I found was the how good AnthemLogic-Music is for 2 channel listening. It reminded my of HK's Logic 7 - only much better.
It just opens up the soundstage so wide with a (not so) subtle bass boost that I like.
I like the fact it doesn't employ the centre speaker. Adding the surrounds just fill the room up with sound.
Don't know if it would be similar to an open baffle, or omnidirectional radiator type speaker setup - but it just seems to work.
The other manufacturers all have their versions of 2 channel up-mix modes - but I didn't enjoy any of them. They all seemed super gimmicky with reverb, room curves, etc.
Looking like the MRX540 with mindsp DDRC-24 is the one to get.
Until full HDMI 2.1 comes out - will have to switch any 2.1 sources (I have zero) with the (non-existent 2.1) display.
I think it was a BIG fail not to include independent subwoofer control in the MRX series.
If only the MRX740 had independent subwoofer outputs - I would likely jump on that and modify my LR fronts for bi-amping.
Although - really with the existing 65wpc output of the MRX300 being plenty for 99% of the time.
It is tempting though to see what bi-amping would do for dynamic headroom on my mains though.
Having to jump from a 540 to 1140 to get independent subwoofer control and a bunch of amplifiers and channel processing I'll never use makes no sense.
You do get DTS:X PRO in the 1140 - which would provide me with what exactly in a 3.2.2 system?
I do have room for a ceiling mounted centre height speaker (voice of GOD).