Photos would be helpful... there is a place to put photos under your ID by creating a virtual system.
Focal can are a bit trebly. The Denon could be a contributor... the integrated amp should not. Cable and interconnects can help. I recommend Cardas, they are a touch warm... Clear Beyond would be my first thought.
Try positioning speaker straight out... no toe in. Get a bunch of couch pillows and bedding and put behind speaker and along floor and at reflection point on the side of the speaker that is close to the wall. This can take twenty minutes... densely pad stuff. Big difference? Then you are on your way.