After spending hours and hours reading about acoustically transparent fabrics, I've decided the TK Living fabrics look the most attractive but I haven't seen any posts from anyone that's actually used them. Seems like everyone uses GoM FR701.
Yes looks very expensive to me. We once dealt with a designer for furnishings in a home we remodeled. He started showing fabrics that were $1600 a yard. We asked about something more in our budget and he started showing us fabric that was $400-800 a yard. It was quite the education for me as I had no idea fabric could be that expensive.
My take looking at the website is there is an "exclusive" dealer network of the TK living products, selling fabric ala carte isn't a top priority.
I saw a few comments on their site similar to this one that really seemed to indicate that they were going to sell this as retail:
TK Living is an effort, in part, to reach out to consumers who have the perception that it is prohibitively expensive to do a custom theater because of the design fees, Theo Kalomirakis says. In addition, it makes available exceptional elements to those clients who have the desire and resources to create their own theaters.
But after digging into their site a bit more, it also states that the fabrics and other products are sold through custom installers, and seems an effort to cut (interior) designers out of the chain, improving margin to the installers.
I have ordered a nice selection of TK fabric samples. They are big $, but very nice and easily pass the blow through test. TK said that their fabric in most lines ie Garbo are spec'd for speaker grill use. Although they said the speaker grill fabric is a slightly different version from the wall fabric...but they look alike.
All of their fabrics come in two weaves: Acoustically transparent and "more" transparent for use in front of speakers. I know the acoustician involved and have "faith" in those statements. I have asked for the test results.
I personally question Garbo for speaker use. That being said, the performance of a fabric in this kind of scenario has some dependency on the distance between the fabric and the driver.
My advice, and the advice of Cinema Forte still stands ... I would not use Garbo in any of its incarnations in front of a speaker. This will stand until either we test the product or lab test reports are available. I cannot provide lab test reports if they are provided under a confidentiality agreement.
I will take some photos over the weekend. Getting the photos to look as it does in real life in a dark theater is very difficult. I will do my best.
To compliment the Garbo fabric, I had artists come in and paint the ceiling in 7 layers of black (primary color) and gold leaf (secondary layer). The gold leaf and black was then flattened with 3 coats of a water based flattening agent. This for the most part removed reflections. With lights out it looks relatively black and with lights on it has accents of gold peering through the black. The theater has a very cool vintage 1920s look.