Glass behind the speakers is generally not a good idea. Not only will it add to high frequency reflections, but glass will also resonate, unless it is a laminated acrylic on glass. As to the oils--they could work nicely there, but it sounds like they are getting rid of the first order reflection points. You need something to absorb a bit on the side walls, so if you move them you will likely have to add a suitable replacement.
Electrostatics, Rear walls, and Art
My present set-up has Acoustat 1+1 electrostatic speakers in front of bare plaster walls. Generally, I'm pleased with the sound. However, I'm thinking about hanging art -- mostly photographs behind glass -- on the rear wall. Being that the walls are now bare I don't think glass picture frames would make much difference, or would it?
Also, what about some paintings (no glass) or should I leave them on the side walls(in front of the speakers in the listening area) where they are now ?
I need the opinions of all you knowledgeable Audiogoners. Thanks!
Also, what about some paintings (no glass) or should I leave them on the side walls(in front of the speakers in the listening area) where they are now ?
I need the opinions of all you knowledgeable Audiogoners. Thanks!