It's late enough out East so I expect I won't get help till tomorrow, so I thought I'd work over my own troubleshooting.
I did find that I had incorrectly loaded my soundcard cal file in the meter/mic spl spot--so I fixed that and ran "measure" again.
My levels are reading -13.5 db and OK, then I hit the "start measuring" button where the sweep sounds off (only once) and says that I have 10.6 db headroom.
Problem is here's the graphs it produces.
This is the latest one:
1st graph (rs meter cal fixed).jpg
This is all the measurements together:
1st graphs (all measured).jpg
This is a "waterfall" just to help diagnose my problem!
waterfall (rs meter cal fixed).jpg
As per above, I'm not sure what I'm doing wrong with the graphs--I'm using the default REW settings (and checking them against the Help file instructions), but these narrow, truncated graphs are all I seem to be able to produce...
I hate being low-tech, with high-tech tastes!
So, I'm sure I've just missed something horribly obvious and you'll set me right so I can get this addiction actually producing something!
Thanks for the enabling,
Phil