Hi Max, I just noticed your post. Are you using the 7.1 unbalanced analogue inputs ?
How did you finally correct the problem ?
My crossovers are set at 80Hz and my sub is set at 100Hz which seems to be working fine. However, my BD player is connected via HDMI and in addition to that I play music by connecting an iPod via one of the analogue stereo inputs.
I don't think bass management works for the 7.1 analogue inputs but again I am not certain about it.
Ok, that is interesting - I don't seem to have a problem with the bass management on the 7030. By the way can you please tell me what the nanoAVR is ? Is it PEQ for multi-channel correction ? Are you using it primarily to tame the lows ?