Apologies, I suspect this is a stupid novice setup question:

I have a new 975 and am having a problem getting it to work correctly. I am running 5.1, with a 975 and a 7125. In surround mode, the dialog is very low in volume and also sounds very tinny and hollow. I have calibrated the speakers with a sound meter. 100% of the dialog is coming from the center channel (If I unplug the center speaker there is no dialog from the L and R). I tried cranking the center channel and reducing all the other channels, and this makes it so that I can hear the dialog, but it still sounds tinny, and everything coming out of the other speakers is too low.
I have tried multiple sources with the same outcome.
If I switch to stereo mode, I can hear the dialog properly, but do not have surrounds.
If I set the center speaker to “none” I get the best sound I have been able to get—I can hear the dialog and the soundtrack, and the rear surrounds work properly, but I give up the center speaker. I tried switching one of the fronts with the center, and the issue persists, so it is not the amp or speaker.
Thoughts?

Please call Ben in customer service this morning. He will take steps to analyze and resolve your issue.

Sorry to hear about your issue. We will need to do some trouble-shooting. As Peter has said, please give me a call so I may be of further assistance. I can be reached, M-F 9:00am - 5:00pm EST, at (866) OUTLAWS.