But wait, there’s MORE! I posted some before n’ after pics 10 days ago depicting my having completed the finishing work on a couple of acoustic treatment projects employing Binary Amplitude Diffusers. Since then my my MTB riding buddy and cabinet making whiz Marcel and I wrapped up another room treatment project that was going on with the others. This compound ceiling cloud for the rear of my room will likely be the final acoustic treatment required for my current gear and room configuration.
The pair of 60"x36"x6" broadband absorptive traps are situated where they will intercept and kill the primary ceiling reflection for both the stand-mounted ATC surrounds and the ceiling mounted matching ATC Atmos channels.
The trio of 5" deep 2D QRD diffusers over and slightly behind the listener’s head play a different role. They are intended to do the same thing as the 1D fractal QRD diffuser array on my rear wall- reduce the strength, randomize, de-correlate, and further delay longer reflections of frequencies above 1kHz,
primarily for stereo listening.
If you can delay and randomize the arrival of high frequency reflections by 20ms or more, these particular delayed reflections can become a very good thing. They create a lovely sense of airy spaciousness which fool your ear-brain into believing the room is larger than it actually is. Strong early reflections = BAD. Weak, well dispersed, and late arriving high frequency reflections = GOOD!
