I am confused by my situation.
I expected the TX-SR705 with an Energy Veritas V5.2C center (similar to RC-LCR) to have great dialog.
However when testing with (for example) "The Dark Knight" 12 minutes in, when Bruce and Alfred discuss with each other underground in a cement-walled room, I could barely understand what they were saying at times.
The dialog is muddy, and I hear slight distortion (a low frequency buzzy-static like sound) when some actors speak around a certain frequency. Low female voices seem to produce it the most. I have volume at 60% of maximum (60 on the receiver's absolute scale).
So I brought my source (a "The Dark Knight" DVD) to a friend's house and plugged my center into his TX-NR807 and there was a significant improvement.
Could my TX-SR705 be damaged? Is there a significant improvement from the 705 to the 807? I was under the impression that the sound quality was very similar between these two receivers.
Is there some other possibility that I'm not thinking of?
Basically what I want to know is: Should I expect a V5.2C (or RC-LCR) center with a TX-SR705 to produce clear dialog? Am I maybe underpowering this speaker?