Besides the 3" thick foam on the brick wall, do you have any other room treatment?
I'd like to use bass traps but the speakers are in the living room so covering corners with traps is not an option. I've tried tuning the speakers by moving the speakers in and out from the front wall and it's clear that the passive radiators on them really boom near walls. My other speakers never pronounced as much bass near a wall as the 65's.
Moving them further apart widens the sound but too far and I lose that extreme center image (i.e. close-mic'd vocals on Norah Jones). I preferred mine to be set about 8 feet apart with no toe in. Sitting 9 feet away, imaging is clear and the soundstage is wide open.