Is your 150 below, above, or at the same height as the m60 tweeters? If it is below/above, is it angled towards your ears. When running the Audyssey locations, how did you place the microphone, on a stand, on top of your seats? If there is any reflective material between the mic and the speaker it can skew the results. For ex, in my case I have 2 rows of theater seating, I have to recline my font row recliners flat when taking the rear seat measurements, otherwise, the front seats will affect the results. It is also possible your room is to "dead" with treatments. Bass traps and first reflection panels are a good thing, however, over treating is not a good thing.
