Can't control volume--too loud
Glad to see this thread is still alive. I just picked up the 515 used off Craig's List after having the owner do a demo of the unit, and all seemed to work well. Got it home, did a factory reset, made all the connections, and zero sound except from Pandora, which comes out at full-blast (master volume knob doesn't adjust)--the only way to kill the audio is to switch input or turn off the unit. This happens with each main speaker (tested individually--not touching the sub yet). Another oddity: the center channel sets itself to full when the master volume is set to "min," but at 1+, it behaves normally (I assume--still can't get a signal through, just hearing the "fuzz" of a maxed-out speaker).
FWIW, all video connections (so far) work--I haven't changed my Xbox360 output resolution yet--but audio is throwing me here. It's annoying that I can set up and run a concert audio rig in my sleep (17 years of doing that), but home theater audio is all "durrrrrr".
Audio Output Setup:
--C - Klipsch KCS-C1
--L/R - Cerwin Vega D-3
--Sub - Elan THP1200SW
--HDMI 7 - Chromecast (video good)
--HDMI 6 - AppleTV (video good)
--RGB - Xbox360 (not tested yet)
--TV - not tested yet
--Ethernet - Pandora audio works but no volume control (set to max)
Thanks in advance for any feedback.