Slosjo, glad to see you've got your Statiks all finished up, they look good

I know when I ffirst listened to my OB7's, I was also very impressed with the transparancy, they just seem to disappear into the sound stage, very cool.
I'm sure those curtains behind your Statiks are providing some absorbtion (especially if they are a heavy material), bet they wouldn't sound as good if you opened the curtains and had a listen, have you tried that yet ?
I've got a couple panels behind mine right now but am building a cople poly diffusers to try... if I like the diffusion , I may order a couple of the P.I. Audio "Mr. T" diffusers to go behind the 7's.
Good to hear you're enjoying them so much

-jay