Hi @voodooevil, welcome to the Sonos community, and thanks for reaching out to us. Let me help you with this.
Placing your Sonos speakers to the right location can achieve its best sound and wireless connection. The Sonos Arc has two up-firing speakers within it that sound best when positioned either on a tabletop, or wall-mounted below a TV. Also, Arc requires a minimum of 5.5 inches on the front and sides of it, with at least 2 inches between the backside of Arc and the TV when in a tabletop orientation. If wall-mounting, it is recommended to have a clearance of at least 5.5 inches between the TV and Arc.
You can adjust the balance and loudness of your speaker in the Sonos app, and tune it via Trueplay. Trueplay measures how sound reflects off walls, furnishings, and other surfaces in a room, then fine-tunes your Sonos speaker to make sure it sounds great no matter where you've placed it.
We can wait for suggestions and feedback from our Sonos community users about changing the height and changing the angle of the unit to the ideal sitting location You may also contact our Sales specialists for further assistance.
Hope this information helps.
Please let us know if there’s anything else we can help you with. We and the community are always here.