I discovered the AVAA’s last year. My space is acoustically treated by Artnovion but bass trapping was not adequate. Not enough room for real trapping. Enter the AVAA’s. I tried 1 on demo. Very effective in my space. When I bought the 1st and received it the dealer let me keep the demo unit so I naturally tried 2. Wow, more impressive than with 1. Cleaner, clearer, punchier bass and even improved mids and vocals. All easily heard when the AVAA’s are switched on and off. I ended up with more AVAA’a as I found even further “magic” as I added more units. I’m using the previous model but it works much the same as the new one. It lacks an iPhone feature. These work. Very well. My acoustic treatments now include full effective bass trapping. With 2 massive woofers and 2 large tower speakers, the bass energy I my space was uncontrolled. Now the bass is a highlight of the system. Love them!
Thank you for this great complete explanation and the detailed setup plan! We missed it... just a note, our company is "PSI Audio", not only "PSI" ;-) All the best!
Beste Hans, heel hartelijk bedankt voor het delen van uw ervaring met deze PSI AVAA C214. Ik ga deze basstrap zeker uitproberen. Ook is al is de prijs hoog, het effect lijkt groter te zijn dan de aankoop van een dure luidsprekerkabel of netkabel.
Hello Hans, I discovered this review only now. As I just got rid of my room correction system (sorry but that is how McIntosh named it, but the room remained the same) and added 2 SPL mono‘s, I enjoy a much more fresh and open sound and after tweaking the speaker positions, no need for any digital correction. I also have the PMC Fact.12‘s on Stack Audio feet and my living room with audio set up look almost the same as yours…strange coincidence but true. The only ‚problem‘ ( such problems are pure luxury) left is a rather strong mode which appears to be in the 80-100 Hz area, only with some recordings. I think this could be a perfect case for the PSI Audio C214‘s. I hope I can try them soon, will let you know the results. Thx for the review! Cheers/Ron
Oh Hans, I now got the Holo Audio Spring 3 KTE, the Stack Audio Auva 100s and EQs, the Magna Hifi Mano Ultra MK3, soon will order the Network Acoustics Eno2 (release in March/April) and now it looks I have another thing on my list 😅😍
Thanks! Interesting placement recommendation. I originally thought it might be like the inverse of the subwoofer crawl technique - i.e. place the PSI AVAA C214 as close to the listening position as possible to create a bubble of tranquility. 😅
Hans, thank you for a thorough but succinct review. I was considering adding a second REL sub, to see if it might help to even out the low end in my L-shape room, but would it make better sense to try one or more AVAAs first? And should I avoid placing an AVAA in the same corner as my existing sub?
It depends on the problems you have. When you play music with deep lows and you suddenly stop playing, do you hear the lows fading out in stead of stop immediately? Then the AVAA's are your thing. In my country the distributor has a demo set of two to try on location. You might check if it's the same for where you live.
Hi Hans, thanks for the excellent review! One question: if you increase the gain of the AAVA, does that mean that the room modes are more effected, so becoming less audible?
You set them by increasing the level until you hear a howling sound. Then you decrease the level a bit. You now have the highest level of room mode reduction.
Love your channel HB. I've had my PMC Prodigy 5s and everything is groovy and silky on the frequency band except for the bass of course. I now have dB Tech Sub 618 18" Active woofers but they do not seem in harmony to my liking. It's like it's underpowered but that is impossible, the numbers don't lie. For this amount of money, I'm far from wealthy, I was expecting immediate ecstasy. It's a rather small den but I am not aware of how to attack this problem (which piece) is the problem or is it geography of the room etc..This video has helped a lot but first thing's first, the equipment must be in harmony, no? Frustrated in Canada. Cheers.
dB Tech is a great brand, like Vanderbilt is a great brand if you need a truck. The sub is built for live sound and doesn't go as deep (but a lot louder) than a good sub for home use.
@@TheHansBeekhuyzenChannel thank you very much HB. My brother saw the woofer and said the same yesterday night lol. I bought it at 40% off but should have done more investigating. I am sending it back today and am now searching for a truly efficient and "tight" woofer for a medium sized den. I would ask you for recs but I am aware of your "don't ask recommended equipment" clause :) Have a great weekend HB. IF IT AIN'T DUTCH, IT AIN'T MUCH. peace.
Interesting product, good review. Reminds me of the earlier ASC tube traps (which were passive). I currently have attractively priced bass traps from Blue Acoustics. My speakers are placed 1.20m from the back wall. The right speaker does not see any walls behind or to the right. Unfortunately, the left speaker has a closet wall ( kastwand) nearby. It took a long time before the low registers were somewhat in order. I'm guessing the 2 REL subs in inverted mode are also doing their job??
@@TheHansBeekhuyzenChannel | I too am confused. Where to obtain the app pictured in the video. Not sure what is meant by on cover of manual. What manual?
Ik ga ze binnenkort proberen. Had net als jij ook al een aantal vermeende room nodes opgelost door verandering luidsprekerkabels en 'interne' kabels in m'n quintet 15 open baffles en de switch naar grimm/Mola front end. De Auva 70 zijn onderweg. Die gebruik jij toch ook in set 1? Grappig dat je diezelfde ervaringen hebt met 'room nodes'. Ik hoop zo van de gigantische bass traps afscheid te kunnen nemen. Ze mogen absoluut van de schoonheidscommisie, maar van mij mogen ze weg 😅
@@TheHansBeekhuyzenChannel Beste Hans, We hebben ook een vergelijkbare vloer. In mijn geval 2 cm massief eiken op een folie op een betonnen vloer. Vandaag de Auva70 onder mijn speakers gezet. Heb eerder een setje Gaia geprobeerd, maar dat deed vrijwel niets. Dit is echter een schokkende ervaring. Ik denk dat ik 75% kwijt ben van de irritante dreun rond 55-65 Hz. Weer zo'n vermeende room node dus. In werkelijkheid dus een zwevende houten vloer die resoneert en bedrieglijk lijkt op een room node en al helemaal omdat het precies in die beruchte frequentie range valt. Volgende week test ik een paar AVAA's , maar zoals het er nu voor staat denk ik aan één genoeg te hebben EN al mijn bass traps weg te kunnen doen. Grappige is dat ook jouw kamer qua opstelling bijna een kopie is van de situatie bij mij thuis, dus ik heb goede hoop. Nogmaals dank voor al je geweldige reviews, waar ik heel veel profijt van heb. Hier thuis zeggen we steeds als ik weer iets 'nodig' heb: "het mag van Hans" ...
Thanks for a great video, I've been eying AVAA but not found any good reviews until now! :) But I've been quite puzzled by the technology they're using, because it sounds like its ANC (the sucking out high pressure would be by adding a low pressure or a 180 phase shift in ANC terms), but they say it's not and I have no reason to think it's a lie. So I figured they're using another method and the one I could think of is using a regulation loop with the normal air pressure as set point, then using a negative feedback loop via speakers/amplifier to force the pressure value to the set value (normal air pressure). But this is just the musings of an engineer, they could have done it quite differently using methods I'm not familiar with. If someone know what they're doing and explain it, it would be much appreciated! :)
I'm almost sure they mean they don't output energy, positive nor negative, they 'suck in' the energy generated by the room resonances. Like in the movie the Matrix the attacked person moves backwards.
@@TheHansBeekhuyzenChannel Thanks for the reply! Although 'suck in' energy is a bit to vague since the interesting bit is how. So did search a bit for seeing if anyone opened one up. Instead I was lucky to find an article describing a bit better how it works (based on the previous model C20) "Inside the unit is a pressure-gradient mic mounted behind a micro- perforated screen carefully tuned to offer a specific acoustic impedance boundary. Also inside is an acoustic-suspension driver, which is mounted behind its own speaker grille-like impedance boundary. An analog amplification circuit propels the driver with a velocity that's in opposition of the pressure measured by the screened mic, in order to "zero" the acoustic pressure at the wall boundary or corner junction where the device is placed. Hence the name - Active Velocity Acoustic Absorber." So based on that it seems like I was partially correct, I just missed the acoustic impedance boundary (and inside they have a driver negating the pressure in the tube). So my curiosity is now sated. :)
Hi Hans, thanks for your reviews! Question, is adding a big akoustical painting on the wall behind your listening position on the couch a good way to mitigate refections from behind you and thus improve the sound? (Besides early reflections and speaker placement?) I have a similar situation and am thinking about that.
The increased level of lows can only be cured by a bass trap that is thick enough. For 30 Hz a quarter of a wavelength would be 2.83 meters...... For 150 Hz still 14.1 cm. So you would need a very thick painting....
@TheHansBeekhuyzenChannel understand, and will it do something for the higher frequencies? Sitting so close to a wall will prob cause problems there to? Or not?
@@TheHansBeekhuyzenChannel not just thickness, you need enough rate of absorption as well. You can build a box that can reach low, but whether it "gets enough" is the tricky part.
@@Audfile Foam doesnt realy improve Low Frequencies. You can build a big Bafflewall with mineral wool or thick layers of Basotect wich have an better flow resistence but the best way and space saving is to build an Array (Double Bass Array) where you control the LF energy
@@TheHansBeekhuyzenChannel of course, how silly of me. I used the term in general. But yes, fiberglass, etc. These devices are intriguing! Thanks for the review.
Room resonances cause standing waves and they cause knots and nulls at different places throughuot the room, depending on the frequencies. But they all start at the walls so the pressure is normally highest there where three boundaries meet: front wall, side wall and floor (or ceiling, if you want). There the AVAA measures pressure and lower the air impedance. There is no phase switch on the AVAA's, it's not a subwoofer in reverse.
They work like noise cancelling that's the theory behind it if you had it near where you're listening position is and your meeting the wave coming towards you and cancelling out the unwanted peaks and troughs from the room and speaker is your goal@@TheHansBeekhuyzenChannel
How about using dsp function to (sometimes even build in the streamer like in eversolo a6) counteract the room resonances. Or use a dsp in between streamer and DAC?
It can help a bit. But EQ's introduce phase distortion and you can only set filters for one pooositin in the ro0m. Watch th-cam.com/video/gXohzklfwPs/w-d-xo.htmlsi=8FEtjB2puIXudUXy
PSI AAVA C214 er alle pengene værd, hvis man interesserer sig for øget klarhed i lydbilledet, og et par AAVA'er hæver et system's kvalitet mere end investeringen indikerer!
I discovered the AVAA’s last year. My space is acoustically treated by Artnovion but bass trapping was not adequate. Not enough room for real trapping.
Enter the AVAA’s. I tried 1 on demo. Very effective in my space. When I bought the 1st and received it the dealer let me keep the demo unit so I naturally tried 2. Wow, more impressive than with 1. Cleaner, clearer, punchier bass and even improved mids and vocals. All easily heard when the AVAA’s are switched on and off.
I ended up with more AVAA’a as I found even further “magic” as I added more units. I’m using the previous model but it works much the same as the new one. It lacks an iPhone feature.
These work. Very well. My acoustic treatments now include full effective bass trapping. With 2 massive woofers and 2 large tower speakers, the bass energy I my space was uncontrolled. Now the bass is a highlight of the system. Love them!
Thanks for sharing
You have got into this, seriously 👍👍
How much does the improvement vary - depending on where you put them in the room?
Hans' expertise and approach makes for refreshing viewing amongst a sea of noise.
🙏🏻
Thank you the Hanz. So much coverage on passive and a huge absence on active treatment. Very useful insight.
🙏
Thank you for this great complete explanation and the detailed setup plan! We missed it... just a note, our company is "PSI Audio", not only "PSI" ;-) All the best!
I apologise, I have corrected the name on the title page.
@@TheHansBeekhuyzenChannel no problem, many thanks!
@@PSIAudio1 will you release an white c214? 🙏🏼
Thanks!
Thank you too!
Beste Hans, heel hartelijk bedankt voor het delen van uw ervaring met deze PSI AVAA C214. Ik ga deze basstrap zeker uitproberen. Ook is al is de prijs hoog, het effect lijkt groter te zijn dan de aankoop van een dure luidsprekerkabel of netkabel.
👍🏼
Hello Hans, I discovered this review only now. As I just got rid of my room correction system (sorry but that is how McIntosh named it, but the room remained the same) and added 2 SPL mono‘s, I enjoy a much more fresh and open sound and after tweaking the speaker positions, no need for any digital correction. I also have the PMC Fact.12‘s on Stack Audio feet and my living room with audio set up look almost the same as yours…strange coincidence but true. The only ‚problem‘ ( such problems are pure luxury) left is a rather strong mode which appears to be in the 80-100 Hz area, only with some recordings. I think this could be a perfect case for the PSI Audio C214‘s. I hope I can try them soon, will let you know the results. Thx for the review! Cheers/Ron
👍🏼
Oh Hans, I now got the Holo Audio Spring 3 KTE, the Stack Audio Auva 100s and EQs, the Magna Hifi Mano Ultra MK3, soon will order the Network Acoustics Eno2 (release in March/April) and now it looks I have another thing on my list 😅😍
Good choice!😁
Interesting video. I will try to get the Avaa in my audio room. Subscribed!
Thanks for subbing!
Thanks! Interesting placement recommendation. I originally thought it might be like the inverse of the subwoofer crawl technique - i.e. place the PSI AVAA C214 as close to the listening position as possible to create a bubble of tranquility. 😅
Glad it was helpful!
Now I know where to go once I hit this wall, pretty smart design.
Absolutely
Thanks for the video!
You're welcome!
Hans, thank you for a thorough but succinct review. I was considering adding a second REL sub, to see if it might help to even out the low end in my L-shape room, but would it make better sense to try one or more AVAAs first? And should I avoid placing an AVAA in the same corner as my existing sub?
It depends on the problems you have. When you play music with deep lows and you suddenly stop playing, do you hear the lows fading out in stead of stop immediately? Then the AVAA's are your thing. In my country the distributor has a demo set of two to try on location. You might check if it's the same for where you live.
Hi Hans, thanks for the excellent review! One question: if you increase the gain of the AAVA, does that mean that the room modes are more effected, so becoming less audible?
You set them by increasing the level until you hear a howling sound. Then you decrease the level a bit. You now have the highest level of room mode reduction.
@@TheHansBeekhuyzenChannel Thank you very much!
Love your channel HB. I've had my PMC Prodigy 5s and everything is groovy and silky on the frequency band except for the bass of course. I now have dB Tech Sub 618 18" Active woofers but they do not seem in harmony to my liking.
It's like it's underpowered but that is impossible, the numbers don't lie.
For this amount of money, I'm far from wealthy, I was expecting immediate ecstasy. It's a rather small den but I am not aware of how to attack this problem (which piece) is the problem or is it geography of the room etc..This video has helped a lot but first thing's first, the equipment must be in harmony, no? Frustrated in Canada. Cheers.
dB Tech is a great brand, like Vanderbilt is a great brand if you need a truck. The sub is built for live sound and doesn't go as deep (but a lot louder) than a good sub for home use.
@@TheHansBeekhuyzenChannel thank you very much HB. My brother saw the woofer and said the same yesterday night lol. I bought it at 40% off but should have done more investigating.
I am sending it back today and am now searching for a truly efficient and "tight" woofer for a medium sized den. I would ask you for recs but I am aware of your "don't ask recommended equipment" clause :) Have a great weekend HB. IF IT AIN'T DUTCH, IT AIN'T MUCH. peace.
interesting review and gadget
🙏🏻
I need to try this
You should!
Interesting product, good review.
Reminds me of the earlier ASC tube traps (which were passive). I currently have attractively priced bass traps from Blue Acoustics. My speakers are placed 1.20m from the back wall. The right speaker does not see any walls behind or to the right. Unfortunately, the left speaker has a closet wall ( kastwand) nearby. It took a long time before the low registers were somewhat in order. I'm guessing the 2 REL subs in inverted mode are also doing their job??
Thanks for sharing!
jakobgooijer, what do you mean when you state the RELs are inverted? Thank you
@@lobstame there is a setting ( knob ) on the REL's to inverte phase by 180⁰
Hallo Hans. Can you place I link to the db app. I cant find the one U use 🙏
Sure: apps.apple.com/nl/app/dbmusic/id924812615
Thanks!!
Could you link to the DB Music App? I was not able to find it in the App Store. Great video!
It doesn't have to be linked to your stereo or music app. It reacts on the sound in the room.
Makes sense. I cannot find where to get the app.
There is a qr code on the cover of the manual
DBMusic (1 word, no space) - I tried with space and couldn't find it.
@@TheHansBeekhuyzenChannel | I too am confused. Where to obtain the app pictured in the video. Not sure what is meant by on cover of manual. What manual?
Ik ga ze binnenkort proberen. Had net als jij ook al een aantal vermeende room nodes opgelost door verandering luidsprekerkabels en 'interne' kabels in m'n quintet 15 open baffles en de switch naar grimm/Mola front end. De Auva 70 zijn onderweg. Die gebruik jij toch ook in set 1? Grappig dat je diezelfde ervaringen hebt met 'room nodes'. Ik hoop zo van de gigantische bass traps afscheid te kunnen nemen. Ze mogen absoluut van de schoonheidscommisie, maar van mij mogen ze weg 😅
👍🏼
@@TheHansBeekhuyzenChannel Beste Hans, We hebben ook een vergelijkbare vloer. In mijn geval 2 cm massief eiken op een folie op een betonnen vloer. Vandaag de Auva70 onder mijn speakers gezet. Heb eerder een setje Gaia geprobeerd, maar dat deed vrijwel niets. Dit is echter een schokkende ervaring. Ik denk dat ik 75% kwijt ben van de irritante dreun rond 55-65 Hz. Weer zo'n vermeende room node dus. In werkelijkheid dus een zwevende houten vloer die resoneert en bedrieglijk lijkt op een room node en al helemaal omdat het precies in die beruchte frequentie range valt. Volgende week test ik een paar AVAA's , maar zoals het er nu voor staat denk ik aan één genoeg te hebben EN al mijn bass traps weg te kunnen doen. Grappige is dat ook jouw kamer qua opstelling bijna een kopie is van de situatie bij mij thuis, dus ik heb goede hoop. Nogmaals dank voor al je geweldige reviews, waar ik heel veel profijt van heb. Hier thuis zeggen we steeds als ik weer iets 'nodig' heb: "het mag van Hans" ...
@denislesterwhitton5742 thanks for your trust and kindness.
@@TheHansBeekhuyzenChannelBeste Hans, neem dan ook een van mij aan en bestel Fidelium luidsprekerkabels. Bereid je voor op een schok.
Thanks for a great video, I've been eying AVAA but not found any good reviews until now! :)
But I've been quite puzzled by the technology they're using, because it sounds like its ANC (the sucking out high pressure would be by adding a low pressure or a 180 phase shift in ANC terms), but they say it's not and I have no reason to think it's a lie. So I figured they're using another method and the one I could think of is using a regulation loop with the normal air pressure as set point, then using a negative feedback loop via speakers/amplifier to force the pressure value to the set value (normal air pressure). But this is just the musings of an engineer, they could have done it quite differently using methods I'm not familiar with. If someone know what they're doing and explain it, it would be much appreciated! :)
I'm almost sure they mean they don't output energy, positive nor negative, they 'suck in' the energy generated by the room resonances. Like in the movie the Matrix the attacked person moves backwards.
@@TheHansBeekhuyzenChannel Thanks for the reply! Although 'suck in' energy is a bit to vague since the interesting bit is how. So did search a bit for seeing if anyone opened one up. Instead I was lucky to find an article describing a bit better how it works (based on the previous model C20) "Inside the unit is a pressure-gradient mic mounted behind a micro- perforated screen carefully tuned to offer a specific acoustic impedance boundary. Also inside is an acoustic-suspension driver, which is mounted behind its own speaker grille-like impedance boundary. An analog amplification circuit propels the driver with a velocity that's in opposition of the pressure measured by the screened mic, in order to "zero" the acoustic pressure at the wall boundary or corner junction where the device is placed. Hence the name - Active Velocity Acoustic Absorber." So based on that it seems like I was partially correct, I just missed the acoustic impedance boundary (and inside they have a driver negating the pressure in the tube). So my curiosity is now sated. :)
Hi Hans, thanks for your reviews! Question, is adding a big akoustical painting on the wall behind your listening position on the couch a good way to mitigate refections from behind you and thus improve the sound? (Besides early reflections and speaker placement?) I have a similar situation and am thinking about that.
The increased level of lows can only be cured by a bass trap that is thick enough. For 30 Hz a quarter of a wavelength would be 2.83 meters...... For 150 Hz still 14.1 cm. So you would need a very thick painting....
@TheHansBeekhuyzenChannel understand, and will it do something for the higher frequencies? Sitting so close to a wall will prob cause problems there to? Or not?
@@TheHansBeekhuyzenChannel not just thickness, you need enough rate of absorption as well. You can build a box that can reach low, but whether it "gets enough" is the tricky part.
Agreed
Sounds like a great product how much are they.
Is it if you have to ask you can afford it. lol
I can't judge if you can't afford € 3400 (incl 21%VAT)
To be fair, 3400 will also buy a lot of foam.
@@Audfile Foam doesnt realy improve Low Frequencies. You can build a big Bafflewall with mineral wool or thick layers of Basotect wich have an better flow resistence but the best way and space saving is to build an Array (Double Bass Array) where you control the LF energy
But foam won't do it.
@@TheHansBeekhuyzenChannel of course, how silly of me. I used the term in general. But yes, fiberglass, etc. These devices are intriguing! Thanks for the review.
Why don't you try them either side of your couch behind the couch, Can you reverse the phase on them
Room resonances cause standing waves and they cause knots and nulls at different places throughuot the room, depending on the frequencies. But they all start at the walls so the pressure is normally highest there where three boundaries meet: front wall, side wall and floor (or ceiling, if you want). There the AVAA measures pressure and lower the air impedance. There is no phase switch on the AVAA's, it's not a subwoofer in reverse.
They work like noise cancelling that's the theory behind it if you had it near where you're listening position is and your meeting the wave coming towards you and cancelling out the unwanted peaks and troughs from the room and speaker is your goal@@TheHansBeekhuyzenChannel
How about using dsp function to (sometimes even build in the streamer like in eversolo a6) counteract the room resonances. Or use a dsp in between streamer and DAC?
It can help a bit. But EQ's introduce phase distortion and you can only set filters for one pooositin in the ro0m. Watch th-cam.com/video/gXohzklfwPs/w-d-xo.htmlsi=8FEtjB2puIXudUXy
Don’t you just love the aesthetics committee 😂😂😂
I do🥰
I only hope for price drop. I Guess most of the price tag is development and this is what nearly everyone badly needs.
WE can always hope...
PSI AAVA C214 er alle pengene værd, hvis man interesserer sig for øget klarhed i lydbilledet, og et par AAVA'er hæver et system's kvalitet mere end investeringen indikerer!
I agree wholeheartedly
My wife said you lost weight, you look better!
My wife said: "you're maried to me!"😁 I lost 16 kg's / 35 lbs / 2,5 stone. So your wife is right.
this sounds like an april-fools day joke.
It's February, mate.