I finished, yesterday, some corner bass traps. Kind of an internet conglomeration, many sites for info gathering.
I used 705 material to form curved front corner traps. Now I have them floor to ceiling in my front wall corners. A number of 703 wall hangers placed on the front wall and one side of the room where a blank wall used to be.
Other side is all windows with fancy blinds and thick drapes.
Floor is half inch jute pad (EXPENSIVE, these days) with fake wool unbacked woven rug over it.
Yet to address the ceiling ...
It is actually sounding really good in here at this early stage.
Switched out my open back 2-15" plus 8"speakers for now. Just using the Yamaha NS-5 studio monitors powered by McIntosh MC2500 via tube preamp. Source is either a tube output modified Sony 385 CD player or a Dual 604 turntable. Sometimes my old kludged music server, running XP, but NOT connected to the internet.
I have managed to rid my space of all the extra gear sitting around in the way, unused.