In a room of those dimensions and with the described setup and listening position, toe-in is mandatory. You are sitting off axis and too much HF energy is being absorbed by the sidewall treatment. I have heard them toed-in severely, a la Blumlein, from a listening distance of 6ft and the imaging was excellent.
Borrow them and/or try another demo setup.
Kal
Borrow them and/or try another demo setup.
Kal