You have a real world system and kudos for selecting Vandersteen 1Cs. If ever there was a well-designed and made, solid entry speaker that is phase and time aligned, the 1Cs are it. I have a pair too. The room is one half of your sound. Focus on first reflection points at the side walls and ceiling, perhaps place a couple of absorbers there and one or two diffusors either between the speakers on the front wall, if possible, or on the back wall.
Newbie seeking any advice
This is my first post. I appreciate reading the posts and I hope to learn more in time. My present equipment is amateurish compared to what I read here but I'm just getting started. I recently purchased a Yamaha R-N803 receiver and a Yamaha CD-C600 5 disc CD player. I have Vandersteen model 1 speakers. My system sounds very good to me but I would appreciate any general advice as to how I might improve my sound such as room correction, better quality CDs, which streaming service to use, etc. Thanks in advance, I really like reading the posts and hope to learn more as I go. Doug Hess, Newtown Square, Pa.