Wooden blinds vs cellular shades for acoustics

I have wood blinds behind my speakers, never experimented with partial opening, unbelievable! Will have to try this weekend.

Closed, they are reflective, it will be interesting to note the amount of added diffusion when partially opened, something I've been looking for. It does seem that the diffusion properties would be somewhat limited by the window behind being in such close proximity to the wood blind. In the summer the storm window can be pulled out, I suspect the added space behind would increase the diffusive properties. I also have cellular shades on one side wall, these absorb sound, however, not to the extent of my Echobusters.

Hi
I've treated my main picture window and smaller sides with wood shutters,(solid, no slats). Made a huge difference over blinds or drapes. I bought unfinished ones from Lowes, staind them to match my other wood surfaces, then treated them with larch resin to try and give them the best reflective surface I could find, sonically much better than regular poly. It's great. Look up mother of tone website and you'll see what I'm talking about. You can get the varnish from Sinopia. Also, since glass is not our sonic friend, I'm using Marigo dots on the windows, and it is a fantastic tweek. That might interest you as well. Good luck. If you really want to make your room sound great, it's worth it.

I'm having a problem with a 5'x6' standard double glazed window (1/8" glass). The sucker rings at midrange frequencies. Yech! I've tried putting powerful 2" magnets on both sides to keep it from resonating (little help), I have thick velvet curtains with backing on them in front (still rings). The people who install plastic films on windows doubt it would help. I'm talking to the window people about getting laminated glass replaced in - but that will likely be costly. I don't know about the Marigo dots - can't imagine they would be much better than the magnets. This could be an expensive fix, as the glass they use is thin enough to be like a drum membrane.

Peter_s, is the window mounted inside a frame? If so, I wonder if inside-mount blinds (high-NRC cellulars or partially-open wooden) would reinforce the curtains sufficiently to stop the ring.

I have a window wall measuring 8'x 18' opposite my speakers with four panels of metal mini-blinds. I alternate the blinds panels with slant-up and slant-down hoping to break-up and redirect reflections.
I've also placed several 2" squares of DynaMat on each of the four double-pane windows in hopes of reducing glass vibrations.
I have no idea if this works although it sounds reasonable that it should.