AVAA C20 review by Sound on Sound Operating rather like a subwoofer in reverse, this crafty device controls low frequencies but takes up far less space than conventional bass traps. Without doubt the most difficult acoustic problem to resolve for the vast majority of project studios is the challenge of low-frequency standing waves [...]
Active vs passive absorbers - AVAA C20 review by Jochen Schulz Wouldn't it be nice if you only had to put a few small boxes in the corners instead of cubic meters of rock wool, and within a few minutes you would have eliminated all room modes? Perfect acoustics at the push of [...]
What is RT60 Reverberation time, also known as RT60, measures the time it takes for sound to decay in a room after turning off the sound source. It defines the time required for the sound pressure level to decrease by 60 decibels (dB) from its initial level. Evaluating a space's sound quality, reverberation time [...]
Watch our videos explaining the AVAA technology The room mode killers Introduction to the AVAA technology. Demonstration of our box dedicated to AVAA demonstration anywhere. AVAA demystified - [...]
Why are low frequencies difficult to treat? Acoustics is a fluid dynamic. Unfortunately, it is impossible to see what is happening with small pressure waves in air. Waves in water are a good analogy and the 2 pictures hereunder make it easy to understand why short wavelengths are easy to deal with and big [...]
What are the room modes? Room modes are the collection of resonances that exist in a room when the room is excited by an acoustic source such as a loudspeaker. Most rooms have their fundamental resonances in the 20 Hz to 200 Hz region, each frequency being related to one or more of the room's [...]
