here are some suggestions from a parsifal owner with a less severe but similar problem,too much furniture in living room.
first place speakers (and listening couch)on a diagonal.15 to 30 degrees will help.
try then the woofer in front firing configuration
damp the wall that closes in on one of the speakers at point of first reflection.
play with toe in
good luck
first place speakers (and listening couch)on a diagonal.15 to 30 degrees will help.
try then the woofer in front firing configuration
damp the wall that closes in on one of the speakers at point of first reflection.
play with toe in
good luck