You might also consider pleated shades. They aren't very expensive and they cover the glass vey well. I use them. and the pleats as well as the soft material is good for absorbing sound.
acoustic vertical window blinds
Does anyone have recommendations for manufacturers or suppliers of room blackening/darkening vertical window blinds for use in my mostly audio room? On each equal length side of each speaker ( a bit over 6' ) there are windows, on one side a standard double hung, on the other a rather large 4 panel bow window (over looking a fairly lovely private natural setting). I may or may not stay in this house for very long, so I neither want to overinvest nor shortchange my listening pleasure. I need to replace the current vertical blinds, and thought my fellow Audiogoner's might have some suitable suggestions.
Thanks in advance.