Originally Posted by batpig
One simple thing is to display the graph not as an average but an overlay of all the individual plots that comprise the average. Then you can see what's actually happening at each point in space. It is possible that the dip is a nasty phase interaction that only exists over a small area and disappears a short distance away. This could indicate a simple fix may be a slightly adjustment of seating location.
Also just in case -- make sure you do NOT smooth the measurements prior to the RMS average. You want to average the unsmoothed plots and then AFTER averaging apply any smoothing. Otherwise it is "over smoothed".
IMO is the anomaly only exists at a small point in space and things look normal a short distance left or right I wouldn't sweat it too much.
I know I have work to do, but this is from late last night...as you can see the right seat next to MLP is cool....the MLP and LEFT SEAT are not so great. This is POST sub tweak, but what I did wrong is do all this with Audyssey off...meaning I got best RAW SUB response, then I did sub tweak to integrate to center, then I turned on Audyssey. Anyways...I will start over, but this is a bit larger a hole that I want (would you agree)