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SKU

110025

Please note: this item is available for purchase in the United States only.

PSI AVAA C20 Absorber - Graphite Black

Active velocity acoustic absorber designed to absorb the standing modes between 15 and 150 Hz in a room

MFR# ZPAVC2002B

Product Description

The PSI AVAA C20 is designed to absorb the standing modes between 15 and 150 Hz in a room. It will do so just like passive absorbers but in a much more efficient way and using up much less space. Each operating AVAA will have the same effect as a hole in the wall much larger than the dimensions of the AVAA (that is 0.2 m2). The exact ratio will depend on the frequency and environment but typically range between 5 and 20.

The AVAA will affect the impedance of the air and “suck” low frequencies around it. Therefore the best position to place an AVAA is in the most rigid corners as that is where all room modes will be most present. It is important to work on the positioning of loudspeakers and listening, as the AVAA will have little effect on inevitable first reflections.

How does it work?

A microphone will measure the acoustic pressure in front of an acoustic resistance.

The acoustic resistance is designed to let air through but reducing significantly the pressure.

Behind the acoustic resistance, a transducer membrane is driven to absorb the volume of air going through the acoustic resistance as well as ensuring a specific acoustic impedance in front of this acoustic resistance.

When in function, this acoustic impedance in front of the acoustic resistance is significantly lower than in ambient air and therefore acts as a pressure sink. The acoustic impedance of the air is affected typically over a radius of 1 to 1.5 m around the AVAA. This explains how the AVAA can be more absorbent that its actual surface of perfect absorber.

It is designed to absorb frequencies between 15 and 150 Hz and is most effective on room modes that are the result of multiple reflections.

Features:

  • The AVAA absorbs room modes between 15 and 150 Hz
  • 100% ANALOG, no DSP, no latency
  • Effective as perfect absorber up to 25 times its size
  • No calibration or settings are required
  • No sound emitted and no alteration of the sound source
  • 2 AVAAs will make a significant difference in normal sized studios
  • Works in any type of room: recording, mixing, mastering, listening

Product Specifications

Condition New

Product Reviews

5 out of 5 stars.
Review Count (2)

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They’re not inexpensive but I was honestly shocked at how effective these are. Tightened up a short decay time in the lowest frequencies of my room which is below 20Hz. After buying 2, I bought 2 more later so all corners were treated. Used in conjunction with traditional treatments, it can be an excellent addition.

By Bob B on August 12, 2021

The AVAA has transformed my listening room. Two of the devices effectively remove strong bass resonances which were inevitable in my “sweet spot” near a wall. Result is superb imaging, controlled bass, hearing deeply into the original acoustics of the recording. No other treatment was able to achieve this effect.

By David B on May 13, 2020

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I would like to thank VK for the wonderful sales assistance, service and prices. This was my first purchase with you and it won't be my last. I only wish I'd discovered you years ago!
Matthew R.
I had two Grammy wins this year - Ray LaMontagne & Carolina Chocolate Drops. Both made with help from Vintage King!
Ryan F.
In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
Martin C.
This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
Phil T.
The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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My experience with Vintage King was excellent. The order was here fast considering it was out of stock. The sales person had SKB send it to me directly and I couldn't have been more pleased.
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