Thanks for the feedback. I got everything set up today and changed the source from coax to HDMI and calibrated the channels. With my 1070 all channels were within a point or two of zero db. With the 975 I have huge swings between channels. The front L is +9 and the front R is -10 when calibrated with the SPL meter. Any idea why the large discrepancy? Perhaps this is part of what's causing the low volume? This configuration also causes a loud hiss from the speakers.