I’m looking for cost effective and not too ugly solutions for room treatment and cable management. Off the right side of the photo is a sliding glass door. The left side opens up to a kitchen/dining area. The photo is taken from the couch which has a wall directly behind. I like the sound I have now, but I’ve noticed a sharp reverb when I clap, so I think the sound could get better. Speakers: Triangle Borea BR03 Amp: Yamaha R-N303 Turntable: AT-LP60XHP