Vinyl Blinds

I’ve used them successfully in my old listening room - they actually absorb sound and turn it into tiny amounts of heat - they are very good at absorbing sound - they do not diffuse it

you should position them...

• close to the ceiling
• try different locations - behind the listener first, then sides
• only drop them down by about 2 feet from the ceiling
• they do nothing for bass related issues like standing waves

I’ve tried it in three locations and they work very well

1. my old room, 8ft ceiling - pulled it down about 15"
2. a friends 12 ft high concrete condo - we had them at the sides and behind the listener and dropped them 24"
3. a friends house - 9 ft ceiling - behind the listener - 24" drop

I used a regular blind at home, but used a heavier vinyl for the condo - lots of reflected sound

Where to get the heavier vinyl? - try those companies that print large vinyl signs

The best "diffusers" are those panels you see with lots of different sized pieces of wood

Sound absorbers should be used very carefully - too many will deaden the room - I actually took all of mine out once I get the vinyl hung. If anything, use carpet on the floor and canvas pictures on the side wall 


Hope that helps - Steve

I'm sure they're better than the exposed glass of a window or even drywall. Adding curtains over them will help.

Thanks for the responses. I will probably be looking at curtains especially for the side of the room that has no furniture.

I’ve got a good amount of glass as well and went to the heavy fabric blinds as mentioned above. Works very well.

Vinyl is a hard surface, and for obvious reasons, the sound will 'bounce' off this surface, no matter how thick the Vinyl.  I would recommend a heavier cloth drapery effect for a couple of these windows, so you can realize a small amount of acoustic room treatment...