What is the difference between an AVAA and a passive bass trap?
A passive bass trap absorbs low-frequency energy using physical materials such as mineral wool, fiberglass, foam, or membrane absorbers. An AVAA (Active Velocity Acoustic Absorber) uses a microphone, electronics, and a loudspeaker to actively absorb bass energy. Instead of relying on large amounts of material, it creates a low-acoustic-impedance boundary that "pulls" low-frequency energy out of [...]