In addition to speaker placement (so critical for Wilson speakers, need to get them right down to the last 1/2 inch), room treatment you can also explore vibration control.
You didn't mention how you are placing your equipment but in my experience proper vibration not only improves but is critical in any hi-end system. The changes can be night and day and seems to affect the extreme ends of the sound frequency - top and bottom end. Exactly the issues you are experiencing.
You didn't mention how you are placing your equipment but in my experience proper vibration not only improves but is critical in any hi-end system. The changes can be night and day and seems to affect the extreme ends of the sound frequency - top and bottom end. Exactly the issues you are experiencing.