5-year warranty. Now, you have the opportunity to get a further 1-year additional warranty registering here.
 
Optimize your sound space with the PSI Audio AVAA C214 Digital Active Bass Trap Sound Absorber, a cutting-edge solution now featured at Corsini. 
 
Ingenious digital active bass trap that eliminates resonant frequencies and room modes within the critical 15 Hz to 160 Hz range. Acting like a hole in the wall, it allows sound waves to pass through and leave the room, providing remarkable efficiency and saving space compared to traditional absorbers. The C214's digital technology offers increased adaptability and control, enabling users to adjust sensitivity and manage the device with a smartphone or tablet. Its clever design features two smaller membranes, reducing its footprint and allowing it to be mounted anywhere in the room, making it an elegant and effective solution for acoustics.
 
Details
The PSI Audio AVAA C214 is a groundbreaking digital active bass trap that manipulates acoustic impedance, eliminating resonant frequencies and ending room modes. Designed to address frequencies ranging from 15 Hz to 160 Hz without needing calibration or tuning, this innovative device acts like a virtual hole in the wall, allowing sound waves to pass through and exit the room seamlessly.
By leveraging AVAA technology, PSI Audio has achieved a remarkable feat - not just mitigating resonant frequencies for a specific listening spot but for the entire room. This means any room modes within the critical 15 Hz to 160 Hz range will be eradicated, erasing unnecessary rumble that would otherwise be challenging to treat using conventional passive acoustics.
Compared to traditional absorbers of similar size, the AVAA C214 boasts a remarkable, forty-five times more effective efficiency. The result is not only impressive in performance but also space-saving. The C214's digital technology sets it apart from its predecessor, the analogue C20 (which remains available), allowing for increased adaptability and control. Users can easily manipulate its sensitivity through a broader adjustment range, and the device can be conveniently controlled via a smartphone or tablet.
Moreover, the new control system in the AVAA C214 ensures optimal performance, even when the room's impedance undergoes sudden changes. Its clever design incorporates two smaller membranes instead of a large one, reducing its footprint and providing a more compact, stylish appearance. This means it can be mounted anywhere in the room - on the floor, wall, or ceiling - effortlessly blending with the room's aesthetics while transforming the listening space into an acoustic haven.
 
Control Via App
Thanks to the integration of digital technology, the AVAA C214 opens up new control options. You have full control over intensity and other features using an intuitive app that runs on your smartphone or tablet. This makes fine-tuning and adaptive to different acoustic requirements easier than before.
The housing of the AVAA C214 is made of high-quality aluminium, which not only ensures robust construction, but also contribute to the overall appearance. A wall bracket is optionally available to further increase installation flexibility.
 
HOW DOES IT WORK?
The built in microphone measures 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.
 
WHAT CAN YOU EXPECT?
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.
 
HOW MANY DO YOU NEED?
 
2 AVAAs 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.
 
PLACEMENT
Method 1:
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.
Method 2:
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 sine wave at the frequency of each disturbing room mode (for example, 32Hz, 77Hz, 112Hz‚)
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.