Here are the new graphs. These are measured with the sub still wired to the high level inputs, so I'll have re-wire and compare with the receivers bass management system. Both have "trace smoothing" applied at 1/3 octave. The first is 10-5KHz, left right and "Sub only". Any ideas on the reason for the drop at 3KHz?
The second is 10-300Hz (to show full the drop on the Sub channel). How does it look?
1-L-R-S 10-5000 1_3.jpg 2-L-R-S 10-300 1_3.jpg