Any one using Acoustic Revive devices or Acoustic System Resonators?

[Stef]

I have used both RGC-24 and RR-888 and I have removed them from my system.

Hello Amir! I wanted to try the RGC-24 with my TAD system too. Why did you removed it? Which grounding solution do you have now if any?
Thanks!

 

[Amir]

Hello Amir! I wanted to try the RGC-24 with my TAD system too. Why did you removed it? Which grounding solution do you have now if any?
Thanks!

I do not recommend any grounding solution, CAD GC3 was awful , Acoustic Revive was awful, I did not pay more for other ground boxes and I know expert audiophiles does not use ground boxes.
I think a good dedicated ground in your home is ok if your system needs earth wire.
David @ddk can help you. he is not active here but you can call him , he is in Utah.

my TAD does not need earth wire and I do not connect wall earth wire to back of my TAD C600. floated ground in TAD system improves dynamics and I love it.

the most important factor for my TAD reference system is AC power quality.
when AC quality is good the sound is perfect but when the AC quality is not good the sound is not good.

 

[Argonaut]

I did not pay more for other ground boxes and I know expert audiophiles does not use ground boxes.

Such as whom ?

 

[Amir]

Romy the Cat
David
Roy Gregory

 

[Argonaut]

Oh … Right

 

[Scott Naylor]

Romy the Cat
David
Roy Gregory

VTL TP-6.5 Series II Signature Phono Stage - The Audio Beat - www.TheAudioBeat.com

read audio reviews, ratings, and user opinions on audio equipment before you buy an audio system

www.theaudiobeat.com

Listed in the "Cables and Power" section of ASSOCIATED EQUIPMENT at the bottom of the review - and I quote -

"Also in use are CAD Ground Control and Nordost Qkore grounding systems."

Amir, I wonder if you would share with us what Mr. Gregory told you this month about no longer using the grounding systems he listed in his March 30 review?

 

[Amir]

Ok, You can remove Roy Gregory from that list but I doubt Roy Gregory likes both CAD Ground Control and Nordost Qkore.
I had both GC3 ground and Nordost Qkore , those are useless.

You know Roy Gregory is an industry Reviewer and he is promoting Nordost and CH Precision and ...

I have read Roy Gregory article about AC power of his rooms and find no thing about CAD GC ground.

Gy8 Electrical Installation - Gy8

gy8.eu

I think Roy listed Nordost and CAD just for advertising those equipments.

So if you want continue off-topic then you can remove Roy Gregory from that list, I have no problem

 

[Cellcbern]

I am interested in making my walls disappear in my reference system so it's more like being in the actual venue.

The Acoustic Revive devices seem interesting:

http://www.acoustic-revive.com/english/roomtuning/

RR-888 low-frequency pulse generator

QR-8 resonator

RCG-24 Ground Conditioner

The Acoustic System resonators are also interesting, although expensive. These seem to work at audio frequencies.

acoustic-system-international@wanadoo.fr

http://www.6moons.com/audioreviews/acousticsystem/resonators.html

Any experience with any of these?

Thanks

The Acoustic Revive devices you mentioned may improve the sound but will not "make the walls disappear". The Acoustic System Resonators properly deployed can make the walls disappear like nothing else I've encountered. "Properly deployed" is key. In my experience it takes extensive experimentation with placement to achieve what you are seeking, and small differences in placement can make a big difference in the outcome. If Frank Tchang or one of his disciples is placing them for you good results can come quickly. On your own it may take many hours of tweaking.

FYI: http://www.audiodrom.net/en/special-edition-reviews/158-asi-resonators-angel-bowls

FYI: http://www.audiodrom.net/en/special-edition-reviews/148-asi-sugar-cubes-devils-dice

 

[cuntigh]

The Acoustic Revive devices you mentioned may improve the sound but will not "make the walls disappear". The Acoustic System Resonators properly deployed can make the walls disappear like nothing else I've encountered. "Properly deployed" is key. In my experience it takes extensive experimentation with placement to achieve what you are seeking, and small differences in placement can make a big difference in the outcome. If Frank Tchang or one of his disciples is placing them for you good results can come quickly. On your own it may take many hours of tweaking.

FYI: http://www.audiodrom.net/en/special-edition-reviews/158-asi-resonators-angel-bowls

I can’t agree more. I have these for years now. The experiment is boring in the beginning, but if you don’t give up you are paid in return and it worths the pain. The AS have the advantage of not being exclusive and you can couple them with over ambiance tweaks like Bybees or Stein Music.
Don’t forget the Sugar Cubes that are very (I mean very) efficient and very low price.
In the ten years I had the AS Resonnators and Sugar Cubes I tried twice to take them off. Keep without them for a few days and take them back. Always better with. As always : my room, my system and my ears.

I scarcely post about AS because generally, the discussions ends bad, and as don’t care people who never listened but absolutely try to convince me and the whole planet that they do nothing, so I prefer to stay mute.

 

[Amir]

before any judgment you need have properly setup high performance system specially in dynamics

 

[Cellcbern]

I can’t agree more. I have these for years now. The experiment is boring in the beginning, but if you don’t give up you are paid in return and it worths the pain. The AS have the advantage of not being exclusive and you can couple them with over ambiance tweaks like Bybees or Stein Music.
Don’t forget the Sugar Cubes that are very (I mean very) efficient and very low price.
In the ten years I had the AS Resonnators and Sugar Cubes I tried twice to take them off. Keep without them for a few days and take them back. Always better with. As always : my room, my system and my ears.

I scarcely post about AS because generally, the discussions ends bad, and as don’t care people who never listened but absolutely try to convince me and the whole planet that they do nothing, so I prefer to stay mute.

Such discussions end badly because there are so many people who haven't learned to listen, don't trust their ears, and can't get their heads around solutions for which there are no measurements. The ASI Sugar cubes are, based on my experience, the world's best value in acoustical treatments. They are powerful, versatile, and inexpensive, easily matching or exceeding the performance of many panels. I have found them to be very effective on the ceiling and a must in ceiling room corners.

FYI: https://positive-feedback.com/Issue54/asi.htm

 

[Cellcbern]

I do not recommend any grounding solution, CAD GC3 was awful , Acoustic Revive was awful, I did not pay more for other ground boxes and I know expert audiophiles does not use ground boxes.
I think a good dedicated ground in your home is ok if your system needs earth wire.
David @ddk can help you. he is not active here but you can call him , he is in Utah.

my TAD does not need earth wire and I do not connect wall earth wire to back of my TAD C600. floated ground in TAD system improves dynamics and I love it.

the most important factor for my TAD reference system is AC power quality.
when AC quality is good the sound is perfect but when the AC quality is not good the sound is not good.

Putting aside that this discussion has nothing to do with the post that started this thread, the fact that you are talking about "earth wire" and "floated ground" in the same couple of sentences with "grounding" boxes suggests that you do not understand what so-called "grounding" boxes do. "Grounding" boxes have nothing to do with earthing/safety ground. They are sinks for (i.e., they absorb and dissipate) EMI/RFI riding on a component's ground. Contrary to your assertion that they are "worthless", every "grounding" box I've listened to from each different manufacturer and at multiple price points has reduced noise thereby revealing more of the music. Here for example is a description of what Tripoint's (arguably the world's most highly regarded) grounding boxes do from the website:

Welcome to Tripoint Audio​

"Come experience the holographic transportation of the real musical event with our proprietary passive filtration components that eliminate EMI/RFI from the signal and impulse signal flow....".

FYI: https://tripointaudio.us/

 

[Amir]

I am electronics engineer and no need to describe me about emi/rfi .

I know what ground box do and those are useless.

 

[Cellcbern]

I am electronics engineer and no need to describe me about emi/rfi .

I know what ground box do and those are useless.

Being an electrical engineer does not make you an expert when it comes to audio. And presumably an electrical engineer who is also an audiophile would know that accessories and tweaks are system dependent and therefore would not make a blanket statement about things being "useless". Lots of WBF posters have had positive experiences with grounding boxes and (unlike your posts) find them useful. For example:

Tripoint Grounding Boxes

I would love to hear thoughts and opinions from Tripoint owners on this subject.When using Tripoint boxes where did you find the biggest improvements in your system? Did you find a bigger improvement on your Digital side or Analog side? Also has anyone tired them on very large mono amps like the...

www.whatsbestforum.com

Entreq Tellus grounding

Well here goes, initiating a new thread. I feel this one deserves it's own discussion, in close association with the one re Troy grounding. Some months ago during endless noodling on the web re all things audio, I came across references to Tripoint Troy and then Entreq. After discussion both...

www.whatsbestforum.com

 

[Amir]

Why some audiophiles have positive experiences with Ground Control and AC filters ?

because their system is not enough transparent .

what transparent means?

"transparent" is not just about getting good details and resolution, "Transparent" has 3 dimension:
- image/presence
- harmonics
- dynamics

I agree some Ground devices improve the sound in some area like bass and lowering noise but It degrades micro dynamics .

most modern systems (high feedback - complex - Dead speakers) are not transparent enough in micro dynamics.
When your system is not transparent then you can not hear what ground control do with your sound.

 

[Cellcbern]

Why some audiophiles have positive experiences with Ground Control and AC filters ?

because their system is not enough transparent .

what transparent means?

"transparent" is not just about getting good details and resolution, "Transparent" has 3 dimension:
- image/presence
- harmonics
- dynamics

I agree some Ground devices improve the sound in some area like bass and lowering noise but It degrades micro dynamics .

most modern systems (high feedback - complex - Dead speakers) are not transparent enough in micro dynamics.
When your system is not transparent then you can not hear what ground control do with your sound.

Nonsense.

 

[Cellcbern]

Such discussions end badly because there are so many people who haven't learned to listen, don't trust their ears, and can't get their heads around solutions for which there are no measurements. The ASI Sugar cubes are, based on my experience, the world's best value in acoustical treatments. They are powerful, versatile, and inexpensive, easily matching or exceeding the performance of many panels. I have found them to be very effective on the ceiling and a must in ceiling room corners.

FYI: https://positive-feedback.com/Issue54/asi.htm

The other thing about the ASI resonators and/or Sugar Cubes is that they are small and relatively unobtrusive - unlike panels. For those who trust their ears, and are willing to put in the time and effort to experiment, they can be the answer for listening rooms that are shared living spaces where the decor will not allow for panels and traps. The example in the photos below from Audio Exotics is of a famous system that was tuned by Franck Tchang and the top technical people from Zanden and Cessaro personally:

 

[Cellcbern]

Such discussions end badly because there are so many people who haven't learned to listen, don't trust their ears, and can't get their heads around solutions for which there are no measurements. The ASI Sugar cubes are, based on my experience, the world's best value in acoustical treatments. They are powerful, versatile, and inexpensive, easily matching or exceeding the performance of many panels. I have found them to be very effective on the ceiling and a must in ceiling room corners.

FYI: https://positive-feedback.com/Issue54/asi.htm

FYI - ASI Sugar Cubes being deployed on the ceiling at the Hiendy.com audiophile club/site in Hong Kong.

 

[Stef]

Being an electrical engineer does not make you an expert when it comes to audio. And presumably an electrical engineer who is also an audiophile would know that accessories and tweaks are system dependent and therefore would not make a blanket statement about things being "useless". Lots of WBF posters have had positive experiences with grounding boxes and (unlike your posts) find them useful. For example:

Tripoint Grounding Boxes

I would love to hear thoughts and opinions from Tripoint owners on this subject.When using Tripoint boxes where did you find the biggest improvements in your system? Did you find a bigger improvement on your Digital side or Analog side? Also has anyone tired them on very large mono amps like the...

www.whatsbestforum.com

Entreq Tellus grounding

Well here goes, initiating a new thread. I feel this one deserves it's own discussion, in close association with the one re Troy grounding. Some months ago during endless noodling on the web re all things audio, I came across references to Tripoint Troy and then Entreq. After discussion both...

www.whatsbestforum.com

I have had a very positive experience 2 weeks ago in HK at "Audio Exotics" Sheung Wan showroom. Chris Leung was showing to me how analogue is the brand new APL DAC which during the listening session was paired with a DartZeel combo. Intrigued and curious about a "black box" standing on the floor I asked Chris the use of this gear. Chris introduced to me Tripoint Audio in the best way ever: he just told me "There would be no Audio Exotics today without Tripoint" and removed the Tripoint Troy NG during our listening session. Suddenly the music stage collapsed, the image was less dense (live) and less quiet at the same time with an obvious loss of micro details. It was really an eye-opening experience for me. I'm not saying that without the Tripoint the music was bad but with it inside it was a better listening experience for sure.

 

[Tuckers]

without Tripoint" and removed the Tripoint Troy NG during our listening session. Suddenly the music stage collapsed, the image was less dense (live) and less quiet at the same time with an obvious loss of micro details. It was really an eye-opening experience for me. I'm not saying that without the Tripoint the music was bad but with it inside it was a better listening experience for sure.

This mirrors my experience with effective grounding equipment, even some of the stuff whose theories can sound like so much Woo.