The same with the 700's, much better with the felt ring off. What is the difference in the sound with acoustic lens off and on?. Does it look like you can adjust the offset?
The offset can't be adjusted on the acoustic lens, unless you want to find a way to set the ring (glue?) at a different angle than the screw holes allow.
I'm also curious about the three holes off to the side of the ring. Looks like they're covered with felt, too (but from the inside of the enclosure), and the center one has a small hole in the center. I haven't taken the whole thing apart yet, but these should be between the rear enclosure and your ear. I'm guessing that removing the felt might reduce some of the bass as well... or am I totally off on this? I don't remember how this works.