Grounding Boxes

plasmod3

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What do you guys use for grounding boxes?
 

QuadDiffuser

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QuadDiffuser

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plasmod3

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wow that just flew over my head haha - amazing stuff. re grounding boxes wont that provide the least resistance of a ground path to remove further noise from the system?
 

QuadDiffuser

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shakti

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What do you guys use for grounding boxes?
I am using some small Entreq minimus boxes, but mainly the Telos GNR active grounding.
For trial week I was using the CAD Ground control boxes, which were better than my small Entreq.

Effect of passive grounding in my system is smaller, than the active Telos effect.

But you should try out in your personal system.

Sometimes some addition ground wires in a Star configuration have a good effect with nearly no costs :)
 

plasmod3

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Ah thanks will read up on star configs
 

Duckworp

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I use CAD GC1 for signal ground attached to my dac and bridge. And the CAD GC3 for passive electrical Earth grounding connected to my mains block and the metal box of the DAC. Both work exceptionally well and have a big effect.
 

justubes

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Aug 10, 2015
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I have been testing grounding schemes and equipment, it is most important that the grounding between various equipment and the mains earth is taken care of first, as this is the basic step and have found it alone makes up for up to 50% of the sonic effect/improvements over four figure gounding cables and five figure grounding boxes which i have been testing over the past weeks.

The permutation of where and how equipment can be grounded together (even multiple connections) is just mind boggling and tiresome. A lot of patients and testing at different ground connections will have varying effect.

Likewise type of grounding cable can contribute to 1/3 effect of any single grounding box or device.

Expecting a ground box to provide 100% of the effect with no consideration to type of ground cable and experimentation with the various grounding points would not be cost effective at all!
 

Thomas_GER

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Sep 26, 2020
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Hello everyone,

I only used a Telos GNR mini (I had connected DAC, streamer and CD player) and switched to the large GNR from Telos Audio a few weeks ago. I clearly noticed the improvements. (However, it only took the GNR a week to get really "warm".)
The result was more resolution, increased transparency and a crisper bass. I also grounded all peripheral devices, such as router, LAN isolator and Power supply for the router.

best regards
Thomas
 
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heihei

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I'm genuinely interested in the science behind how / why grounding boxes work, over and above tying the grounds of a system to a common ground. I've just read Roy Gregory's glowing review of CAD's latest £20k box but nowhere is there an explanation of the engineering / physics behind why it works.
I've tried both Entreq and CAD in my system with no noticeable difference. Maybe I should just consider myself lucky and move on, but would love to know what I'm missing with regard to the science.
 

spiritofmusic

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Jun 13, 2013
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Adam, Entreq worked a treat in my old space, where my mains grid in East London was hugely compromised, voltage swings moment to moment of 20V, light industrial and cell booster aerials, most of my neighbours being work/live. Entreq literally helped give me a half-decent sound.

Out here in the Sticks, semi rural, zero industrial, audio system feed branched off prior to rest of house, armoured feed to 8kVA balanced transformer in room, dedicated lines.

Entreq still positively contributes, but way less than before.
 

microstrip

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I'm genuinely interested in the science behind how / why grounding boxes work, over and above tying the grounds of a system to a common ground. I've just read Roy Gregory's glowing review of CAD's latest £20k box but nowhere is there an explanation of the engineering / physics behind why it works.
I've tried both Entreq and CAD in my system with no noticeable difference. Maybe I should just consider myself lucky and move on, but would love to know what I'm missing with regard to the science.

If we are really interested in the science behind most of these thinks, the first think we should do is changing their name - most times they do not work as grounds. Do not expect a general theory on them, at best we can address what some specific device is doing in a particular system.
 

Barry2013

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I am a long time user of Entreq grounding boxes and cables. I currently have an Olympus Tellus, a Poseidon and two Minimus and an Olympus 10. The earth cables are mainly Apollo with three Atlantis. The power, speaker and i/cs are also from Entreq, again mainly Apollo including an Apollo Infinity on the amp.
They work a treat in my system and give me a totally silent background.
 

Folsom

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If we are really interested in the science behind most of these thinks, the first think we should do is changing their name - most times they do not work as grounds. Do not expect a general theory on them, at best we can address what some specific device is doing in a particular system.

There is no mystery. They are not a ground in any way whatsoever as long as they are the end point; but they are the definition of an antenna.

And it certainly isn’t SR.

If people like the sound, use it. But all the attempts to rationalize it as a ground needs to stop. There isn’t a soul on earth that has any real education that will claim they are a ground - only marketing departments and a few liars looking to cash in.
 

ArnoFenn

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Oct 28, 2020
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I'm genuinely interested in the science behind how / why grounding boxes work, over and above tying the grounds of a system to a common ground. I've just read Roy Gregory's glowing review of CAD's latest £20k box but nowhere is there an explanation of the engineering / physics behind why it works.
I've tried both Entreq and CAD in my system with no noticeable difference. Maybe I should just consider myself lucky and move on, but would love to know what I'm missing with regard to the science.
During a hifi show I was at a demonstration of a CAD box when playing a bob dylan song, without it was harsh, with it was perfectly balanced (could have done a blind test on this without failing). So, it did stay in my mind for all this time, but there was also another thought that when the CAD was connected, it was connected to several compoments and in this way it was actually also creating a "star-grounding" between the units or at least having the cases connected which usually evens out the voltage differences between the housings and currents flow (depending on how the signal ground is also connected to the casing/mains, since this is also a connection).
For the technical explanation the one that makes most sense to me (if any), is indeed the antenna function. In case there is some wide-band noise on the system ground and this antenna is connected, it can radiate the noise but having "absorbing/dissipating" stuff around it, the noise is attenuated. But....why MHz/GHz range influences the audible range...probably only thinkable of influencing digital processing, causing jitter etc.

Now, the only proof if they work (for one of us and our specific systems / ears), is to try it in a blind test but up till now I did not find an easy and free way to get such an antenna with rocks box to try it and return it free of charge....And the prices are high enough to suppress my reflex just to buy one and put it aside if it doesn't do anything for my and my set up...
 

Sablon Audio

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Now, the only proof if they work (for one of us and our specific systems / ears), is to try it in a blind test but up till now I did not find an easy and free way to get such an antenna with rocks box to try it and return it free of charge....And the prices are high enough to suppress my reflex just to buy one and put it aside if it doesn't do anything for my and my set up...

This is sensible advice as the results of these devices seem more variable than many other product types. I had @$20k worth of TOTL grounding system here sometime ago and it made zero discernible difference to my main system. The only position where gains were apparent was when placed on my modem/router, which gave a nice reduction in noisefloor.
 

ArnoFenn

Member
Oct 28, 2020
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Oh, and....if it is this antenna thing going on....it should probably be measurable. Spectrum measured on ground connection with/without, and I have seen someone doing a trial on internet showing that the noise increased with the box attached (so the antenna worked in the other direction of collecting noise from the environment and injecting it to the audio system?). Besides such a relatively simple way of measuring, it would be interesting to see the actual behaviour of the box in true EMC measurements (conducted/radiated)....but then again, you need a box and the actual test equipment/environment..
 

Audiophile Bill

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Mar 23, 2015
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The thread is (inadvertently) talking about “ground boxes” as though they are all the same topology / approach other than Telos.
They are a mixed breed of devices. The Entreq device itself can be seen as an antenna based based on the data above in this thread in the Audiosciencereview and the way it works. Other devices aren’t necessarily antennas as they can also be connected to ground themselves rather than the Entreq floating topology.
 

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