Oh, ok ... not familiar with HK avrs.
I have always used Audyssey and I have also found it helps check everything (it helped me find a bad speaker once ... blown tweeter driver). In general, you must use the supplied mic and it really helps if placed on real tripod.
But I also wanted to mention ... it's perfectly fine to turn off Audyssey and set manual settings (especially since you have the meter). All that means is that you will be listening to the audio exactly as encoded in the media.
It wouldn't let me manually set the levels. Moreover, I even heard my (in ceiling) surrounds during the Audyssey run. I have no idea why the Audyssey didn't like it.
Anyhoo, I returned the Onkyo for HK AVR 2650 (not my first choice).
Thank you very much for your assistance.