PSI Audio | Aktiver Bass Absorber AVAA C20

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Inzwischen hat sich die Erkenntnis durchgesetzt, dass der Hörraum mehr als nur... mehr
Produktinformationen "PSI Audio | Aktiver Bass Absorber AVAA C20"

Inzwischen hat sich die Erkenntnis durchgesetzt, dass der Hörraum mehr als nur Komponentenstatus hat. Sie können sich die besten Komponenten kaufen - wenn Ihr Raum "dagegen" arbeitet, kommt davon wenig bei Ihren Ohren an. Nun lassen sich leider nicht alle Raumgegebenheiten verändern und so können zum Beispiel sogenannte Raummoden das Hörvergnügen nachhaltig trüben. Mit dem aktiven Bass Absorber von PSI Audio kehrt aber garantiert das Grinsen in Ihr Gesicht zurück, wenn Sie fiese Bassmoden einfach nicht in den Griff bekommen. Lässt sich leicht demonstrieren und ist für uns einer der besten Problem- und Klanglöser auf dem Markt.

 

“There’s nothing else on the planet that comes close to the performance!”


Tolle Erklärvideos:
https://www.youtube.com/watch?v=1bRz7yXiLNg
https://www.youtube.com/watch?v=lreSc7ty8h0
https://www.youtube.com/watch?v=DJVu5P1HxOI


“It’s amazing the precision, beauty, tightness and control of the bass in my mastering room, thanks to PSI Audio.”
Bob Katz

AVAA is a revolution in the audio domain!


AVAA is designed to absorb the standing modes in a room  between 15 and 150 Hz.


Same effect as creating a huge hole your wall… no calibration required.

  • 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…

    “In short, there was not enough “BOO..” in the bass – but way too much “…OOOMMMmmm” clouding the overall image. Once we turned on the AVAAs, we could all hear the “BOOM” clearly – and everything else in the mix too.
    Needless to say, we abandoned all of the first da’s mixes and started over – sans dark fog.”
    Andy Hong, Tape Op Magazine

    “It’s remarkable technology that perform so well you think it breaks the laws of physics.
    There’s nothing else on the planet that comes close to the performance of this patented technology!
    Sonically it has taken my room to a level of sonic accuracy that I never thought could be attained without some serious compromise, usually and over damped room in the mid frequency and high-frequency decay time.”
    Bob Katz

    “The effect of the AVAAs is dramatic and not subtle!
    The bass became instantly tighter, more defined and evenly balanced throughout the entire space and out into my living room.”
    Barry Rudolph, Mix Magazine

    “I wish I had had more pages to describe the virtues of the AVAA. It’s amazing the precision, beauty, tightness and control of the bass in my mastering room, thanks to PSI Audio.”
    Bob Katz

    The AVAA is the solution for room mode problems. 

    The AVAA 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.

    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 between15 and 150 Hz and is most effective on room modes that are the result of multiple reflections.

    The AVAA is a solution for room modes below 150 Hz and absorbs low frequencies only. It is therefore not a total solution for acoustically bad rooms. For best results, it needs to be combined with passive absorption in higher frequencies.

    The AVAA will only absorb pressure waves within a radius of 1 to 1.5 m around it in these frequencies. It is therefore not a solution for the first reflections a room might have. Correct positioning of speakers and listening position in the room remains necessary.

    The AVAA will have the same effect, on frequencies from 15 to 150 Hz, as opening a window about 5 to 20 times the size of the AVAA. This will impact sound in the time, frequency and space dimensions.

    • Time: it will significantly reduce reverberation time in these frequencies especially on room modes.
    • Frequency: with more precise and tighter bass, the masking effect of higher frequencies is reduced. Details in higher frequencies also become clearer.
    • Space: with less indirect sound in the room, the location of the sound is more accurate making the sound image more precise.


       
      2 AVAA will have a significant effect in most rooms.

      Depending on the dimension and type of room as well as the result required, between 2 and 4 AVAAs are necessary for most normal size rooms (20 and 80 m2)

      For very small rooms a minimum of two AVAAs is still recommended to have a symmetrical effect.

      For larger rooms please consult an acoustician or PSI Audio directly.

    The most effective position for the AVAA is in a location where the walls contribute most to the room modes that are disturbing in the listening position. In practice it is very easy to position the AVAA effectively after a few comparative trials.

    The starting position is in corners behind the source speakers as this is the most effective position in a majority of cases. However, depending on the structure of the room boundaries and listening position, other AVAA locations might turn out to be more effective. Try positioning them in different corner or against walls and evaluate effectiveness.

    In practice it is quick and easy finding the best location by following the basic rules:

    • AVAAs positioned in corners are more effective
    • AVAAs located against rigid walls are more effective

    Bear in mind that the AVAA is designed to absorb long wavelengths and therefore there is little very little to gain by positioning the AVAA with great precision.

    A more technical 2 step process can also be used to identify the best location for the AVAAs.

    1 – Identify the disturbing room modes: 

    Assuming the loudspeakers and listening position have been set, measure the frequency decay time in the listening position.

    Note that the most disturbing room modes are the ones with the longest extinction time and not necessarily the peaks and nulls that are the result of inevitable first reflections. You may typically identify 3 to 6 modes.

    2 – Identify the highest pressure zones for each problematic room mode:

    Play a sinus wave at the frequency of each disturbing room mode.

    For each of these frequencies, walk around the walls of the room and note down the highest-pressure areas. You can do this with a sound level meter or listening with a single ear.

    As a result you should have a map of your room highlighting the wall areas most contributing to each disturbing room mode. This will clearly show the best location for the AVAAs.

    • It is an efficient solution for room mode problems
    • It is stable with no settings required
    • It can be turned ON and OFF to alter the acoustic environment
    • It can easily be moved into a different room

      • Recording room
      • Mixing room
      • Mastering room
      • Home cinema
      • small clubs
      • Bars
      • Home
      • Any private or industrial rooms where you have problems with heating pumps, pressure machines developing loud low frequencies…

     Abmessungen 42,5 x 30 x 51 cm (B x T x H)

 
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