Quote Originally Posted by ToddK View Post
The white panels are not abosorbing mid or low frequencies. In order to do that, you need at least a 2 inch air gap between the panel and the wall or ceiling.
And the panels need to be much thicker and more dense. Generally, either owens corning insulation, or Rockwool. 4 to 6 inches thick at least.
You're right, the panels aren't meant to absorb anything much past 500Hz. But you're not seeing everything there is, and don't know those panels are top notch audio panels, not just any random fiberglass. Each weighs about 5 pounds and has a layered construction and is glued to the surface with a special very thick glue that allows for a small hollow behind them as well. The absorption ratio of the 30mm extra dense sonic absorption panels is 0.8 down to 500Hz , nearing 1 @ 1KHz and flat one before 2KHz. It does absorb a little bit down to 125Hz, but for more low end absorption, the back wall has a bass trap over a foot thick in the middle and made of both the dense plates specifically designed for studio use and almost 2 foot thick layer of rockwool. Two walls (greenscreen and front) have a thin layer of gypsum protection and 10" of rockwool and very effectively absorb lowest frequencies as well, being 'floating walls'. One of the walls is left concrete with a bookcase etc. to break up the sound asymmetrically, which is alleviated by asymmetric speaker placement (to the room that is) and one wall is tilted in the middle to avoid room symmetricality. Foam and thick curtains breakup the highest frequencies.

It's nowhere near an acoustically perfect room, but I haven't met much better - or any better - in even largish commercial studios. This is way better than my measley gear and speakers even warrant. And because I've eliminated all noises from transformers to computer and everything, everybody who visits it says it's downright eerily echoless and quiet a room, which is quite fine for me. If I want to make the audio experience here even better, the only real solution would be to invest in a totally different class of speakers.

The biggest issue I have is the speaker projectivity, I need to sit in a very limited area to get a properly balanced sound. Just a foot to either direction and the sound begins to change.