User manual

UANPAV V1.0 PSI Audio AVAA User Manual 5
3 General Overview
3.1 Description
The AVAA is designed to absorb the standing modes between 15 and 120 Hz in a room. Above
these frequencies, passive systems are effective. For best results, the AVAA should be installed in a
room where medium and high frequencies have already been treated with passive systems.
With frequencies below 120 Hz, each operating AVAA will have the same effect as a hole in the wall
much larger than the dimensions of the AVAA.
The exact ratio will depend on the frequency and environment but typically range between 5 and 20.
The graph hereunder shows the typical equivalent absorption area of an active AVAA over the
frequency band width it is designed to absorb.
Note that in normal operating conditions the AVAA does not emit any audible sound or anti-noise but
only absorbs low frequencies in an very effective way considering its size. Furthermore, it has no
impact on the direct sound from your speakers or other source.