Author Topic: PSI AVAA C20 ACTIVE Bass Trap and Extremely Accurate Active Speakers Information  (Read 2449 times)

Offline Sound Affairs

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Dear all,

This thread is about the latest information on PSI from 2018 onwards. 

PSI is a 40 year old Swiss company that focuses on the design and production of the highest end Active speakers and innovative products, including the revolutionary AVAA C20 ACTIVE BASS TRAP, which quite a few fellow audiophiles are enjoying at the moment.





More information on PSI as a company : http://www.psiaudio.swiss/


We will be sharing more information and latest update on PSI products in this thread. 

We now also have the AVAA C20 Active Bass Trap, the A25M and A17M Active speakers in demo at our showroom. 

Thank you.

James.   
« Last Edit: July 27, 2018, 10:07 by Sound Affairs »
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Offline Sound Affairs

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Bob Katz on PSI AVAA C20 Active Bass Trap
« Reply #1 on: March 08, 2018, 10:56 »
Mastering Legend Bob Katz uses the PSI AVAA C20 Active Bass Trap in his studio



and his comments :

"When you turn the AVAAs on, there is an eerie silence and suddenly your focus is on the sound coming from the main speakers.” - Bob Katz


https://www.prosoundweb.com/channels/recording/mastering-engineer-bob-katz-utilizes-psi-audio-active-bass-traps/

James.
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Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

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Offline Sound Affairs

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Quoting in entirety with permission from content owner, Ronildoq.  For information sharing as some HIFI forum members does not read Planet Bass threads, but the information is very good for HIFI forumers as well. 

Very good information on how PSI AVAA C20 Active Bass Trap can help with Room modes and bass issues here. 

PSI AVAA C20 is the ONLY PROVEN effective bass solution for below 60Hz , right down to 15Hz (!) bass issues, where traditional passive "bass Traps" does not work!

---------------

http://www.xtremeplace.com/yabbse/index.php?topic=268900.15

Alright, just had a half day off and could quickly do some measurements.

This is my Room Noise floor

Running a sweep with everything muted, it shows approx 43db level. This is the noise flloor at MLP in the Hall. You can see immediately  i have room modes at 23,27,40,58,90hz...


Below are the waterfall plots at MLP. First with just passive traps, second is with Dirac EQ on, 3rd with the PSI on.
you can see how it has cleaned up the decay times down to 20hz. The decay times much improved at 23hz & 27hz, 34hz, 38hz, 58hz, 90hz in green vs purple graph. The Blue is the original before dirac and before PSI active bass trap switched on. Done in GIF format so you can see the decay rates improvement without EQ, with EQ , with PSI.




Another way to see this is using the spectogram.

Graph with only dirac and bass traps


1.You can see clearly the ringing at 90hz, that doesnt end, goes all the way up beyond 1sec on the Y Axis
2.Decay times from 22hz to 35hz shows that it take approx 700ms to decay. This is not so desirable as generally we want soemthing between 200-500ms which is acceptable decay times, anything more suggest room treatment and corner traps.
3.58hz is also more than 600ms

With dirac and bass traps + PSI active bass trap


1.90hz ringing eliminated, if i point my cursor at 90hz, the time it takes to decay is 300ms
2.Decay times from 22hz to 35hz shows that it take approx 700ms to decay. This is where PSI comes in, see the entire range of 20-30hz now decays in less than 400ms. and up to 45hz, reduced from 700ms to 600ms. Improved nicely. This is the power of the PSI.
3.58hz down from 600ms to 450ms, very nice indeed.

In my earlier post, i mentioned using Pink Periodic Noise. That is the wrong one. Play a sine wave at the modal frequencies instead, then walk around the room with an SPL meter, when you see a spike in SPL readings for that frequency, place the PSI at that spot. Measure again to confirm if the decay times improves. After placement of the PSI, then we run Dirac EQ.

Dirac uses mixed phased filters, the results are natural sounding bass, mids and highs. Together with the PSI, this is quite awesome

---------------
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Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

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Offline gchuva

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How important is location of PSI trap?  My room has very few options on that front.

Offline Sound Affairs

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How important is location of PSI trap?  My room has very few options on that front.

Hi, From our installation and experience, depending on where your mains speakers are located, corner placement is very good for a start.  We will PM you to discuss in detail here.

James.
PLiXiR Balanced AC Power Conditioners/DC Supplies and Cables.  Made in Singapore.

Swiss PSI Active Bass Traps and Active Speakers

OPPO Digital Distributor and Product Modifications Centre.

DAC and Digital source modifications with True Femto Clock modules.

Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

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Offline Sound Affairs

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PSI CEO Roger Roschnik Interview by Fever Sound in HK Hifi Show in Aug. 

History of PSI speakers and simple explanation of what the PSI AVAA C20 Bass Trap is doing. 

https://youtu.be/Oc8DhGnc2FI

Thank you.

James.
PLiXiR Balanced AC Power Conditioners/DC Supplies and Cables.  Made in Singapore.

Swiss PSI Active Bass Traps and Active Speakers

OPPO Digital Distributor and Product Modifications Centre.

DAC and Digital source modifications with True Femto Clock modules.

Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

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Offline Sound Affairs

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Installed a pair of PSI AVAA C20 Active Bass Trap at a Customer's place. 

Really helps in the control of bass for the big speakers in the living room!









The PSI AVAA C20 Active Bass Trap is THE perfect solution for solving REAL bass issues (15hz to 125Hz!) in a nice and small package!

Contact us for an audition.

Cheers.

James.
PLiXiR Balanced AC Power Conditioners/DC Supplies and Cables.  Made in Singapore.

Swiss PSI Active Bass Traps and Active Speakers

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DAC and Digital source modifications with True Femto Clock modules.

Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

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Offline Sound Affairs

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Recent Setups using PSI AVAA C20 Active Bass Trap to improve the whole system performance.



Setup 1:

This customer using a customed made 15inch bass driver speakers uses the PSI AVAA C20, located at the right hand corner, behind his speakers, to solve his bass boom issue, with such a big speaker driver close to the back wall, and no other acoustic treatment.  With the corrected and accurate bass, there is actually improved resolution in the mids and highs which where previously hidden by the bass boom.  The result, no bass boom and improved detailed and sound staging across the whole spectrum.   









Setup 2.

This setup uses the active ADAM tensor speakers (dual 10 inch) in a typical HDB room.  The bass boom is so bad the room door and window grills rattles when strong bass tracks are played.  The user tried to "treated" the problem with traditional corner foam based "bass" traps with little effect.

With the use of 2 x PSI AVAA C20 active bass traps behind his speakers, his room Bass Boom issue is SOLVED. No more rattling and improved levels of details across all frequency spectrum.  The old ineffective foam bass traps are removed for even better room acoustics


The PSI AVAA C20 Active Bass Traps remains the ONLY effective and PROVEN bass absorber solution below 60hz (it works from 15hz to 125hz), that is small in size and elegant in usage.

James.
« Last Edit: January 06, 2019, 17:49 by Sound Affairs »
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Offline Chericelise

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how can I arrange to try at my place?
would like to try out 1 or 2 units to hear the difference before I starts to confirm doing up the traditional room treatment.

Thank u.

Offline Sound Affairs

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how can I arrange to try at my place?
would like to try out 1 or 2 units to hear the difference before I starts to confirm doing up the traditional room treatment.

Thank u.


PM sent.


Thanks.
PLiXiR Balanced AC Power Conditioners/DC Supplies and Cables.  Made in Singapore.

Swiss PSI Active Bass Traps and Active Speakers

OPPO Digital Distributor and Product Modifications Centre.

DAC and Digital source modifications with True Femto Clock modules.

Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

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Offline Sound Affairs

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Some Recent Setups in Singapore bought in Feb 2019 who uses the PSI AVAA to improve the bass performance of their setup.

Setup 1:  White PSI AVAA C20 Active bass trap behind the Manger Speaker.   Just 1 piece at the wall side.  Not only does it improve the bass, image focus, smoothness, quietness all up few notches





Setup 2:  Same as above, 1 piece black PSI AVAA C20 at the wall side for this living room setup to improve the bass issues for the wall.  Improved performance across the whole frequency spectrum.



Setup 3: Another setup with 1 piece black PSI AVAA C20 at the wall side of the hifi setup as well for this living room setup. 



These setups are very typical of living room setups in Singapore, with a window / wall side and an open side to the corridor / dining area.  The PSI AVAA C20 Active pass trap will be a great help to solve the bass issues arising from the wall side.  Its the only PROVEN solution to be this small in size and help with bass issues down to 15Hz.
PLiXiR Balanced AC Power Conditioners/DC Supplies and Cables.  Made in Singapore.

Swiss PSI Active Bass Traps and Active Speakers

OPPO Digital Distributor and Product Modifications Centre.

DAC and Digital source modifications with True Femto Clock modules.

Other Brands : MELCO, Black Cat Cables, Weiss Digital, Benchmark, Bfly, Frank Ultrabank Products UB25000

www.mysoundaffairs.com