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  #7  
Alt 22.04.2018, 12:03
shakti shakti ist offline
 
Registriert seit: 21.02.2010
Beiträge: 1.360
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da offensichtlich nicht jeder von mir geteilte link gelesen wird, hier noch mal was marketing Gerede im Klartext:

"Why use our Ground Box's ?

You will get an improvement in dynamic's, a lower noise floor and more natural flow in the sound.

For us a clean and effective ground point is one of the most important factor's in ensuring the best possible sonic platform for any hifi system!
We normally say 220V 50Hz alternative110 V 60Hz. But in our opinion there are a lot more frequence on the power net. These is caused by the way we connect zero and protective ground together in the main central/fuse boxes.Most things these days run on electricity. Current goes in and current goes out of devices and lighting fixtures of every kind. All of these make the current messy. Not least computers with their switched power units, chargers for e.g., mobile telephones, all the halogen and LED lighting, dimmers etc. all cause a great deal of high-frequency noise and stay voltages. This noise always seeks the easiest path to the earth. And since this can be everything from 50-60 Hz to very high-frequency, but weak, currents, it is not always certain that the path of least resistance is via the protective earth. These currents instead can find dishwashers, laundry machines, counter tops with water pipes, your HiFi rack and your stereo set with all the cables and devices as more attractive paths to the earth. Moreover, these stay voltages often generate very large magnetic fields that absolutely have influence on the sound reproduction.
One big problem is that the protective ground many time are overloaded or not constructed for handle this pollutions. It can handle a real "bang" of 110-220Volt and X Watts without any problems, but when it come to this small currents of some Milli V with very high frequence it dont catch them. So instead these will flow arround in the power system searching for a place to ground. And in fact the protective grond can leak back a lot of pollutions to the power net that instead go to f,ex your HiFi system with all the cables and magnetic fields and load up and rest there in their serch for ground.Our ground boxes / Eartha cables are designed to resemble and work like a bit of Mother Earth in concentrated form and offer the simplest and fastest route for this high-frequency noise to reach a earth point. Since such are very high-frequency weak currents, it is not necessary to have a lot of mass; but it is important that the cables are optimized for these high frequency and the groundbox be a purely attractive earth point.The construction and choice of materials in the earth box has a crucial effect on the result. In part, the minerals and metals involved have an effect, but the relationship of proportion and distance between them also affects the result.

When you connect your system to one of our groundboxes you offer this high frequence stay voltages a ground point where they can find peace instead of flowing arround in the system. "


"In my "Building A Firm Foundation" blog, I defined the critical elements as follows:
The AC supply (and RFI)
Grounding
Mechanical interference and component supports
Room acoustics
Signal transfer (and the creation of a coherent cable loom)
You’ll see grounding there at number two, a reflection of both its importance and the cost/benefit ratio that applies to
it. Make no mistake, a proper clean ground is vital to actually realizing the potential performance of all those expensive
boxes you’ve so lovingly (and agonizingly) selected. But it goes deeper than that. It’s not just that you need a good
ground; you can actually hear the quality of the ground you’ve got -- not just whether it’s good or bad, but its nature.
Like everything else to do with audio, and especially cables and connections, what you use matters and how you use it
2014-6-1 Entreq Grounding Products - The Audio Beat - www.TheAudioBeat.com
http://www.theaudiobeat.com/equipment/entreq.htm 2/7
matters even more.
Of course, on a theoretical level, the benefits of a "high-quality, clean ground" are indisputable. The problems arise
because, in stating the principle we fail to define what a “high-quality, clean ground” actually is, especially in this day
and age when every household appliance, electrical system and computer is dumping more and more pollution into that
one common waste sink. It is no surprise that over the years there have been a number of cables that offer separate
floating shields with flying leads designed for connection to a chassis ground. The problem is that relatively few units
still offer that once-ubiquitous facility, another victim of the move to simpler, less fiddly installation. So, when Entreq, a
small Swedish cable manufacturer that could clearly hear the benefits of such an approach, were presented with the
practical difficulties of actually installing such a cable system in any modern setup, they took the radical but obvious
step of offering their own solution: a standalone ground box to which their cable drains could be attached.
Which is when the law of unintended consequences stepped in. Not everybody has Entreq cables, but anybody with a
system can benefit from a clean ground, and before long the ground boxes were attracting more attention than the
cables they were intended to support. What I’m going to look at here is exactly that, the Entreq Tellus and Minimus
grounding blocks used in the context of a standard system employing standard cables.
But first, a little background, because in grounding systems can be divided into two categories: those which have a
dedicated, clean ground and those that don’t. A dedicated ground consists of a ground post, sunk in your yard or
garden and connected to either the main ground of the (hopefully dedicated) electrical spur that supplies your system,
or better still the ground terminal on your system’s distribution block. This arrangement is (in most cases) simple to
install and incredibly effective. Even if you get a contractor to supply the hardware and do the job, it shouldn’t cost
you more than a few hundred dollars. Otherwise, take a trip to Home Depot, buy the necessary cable and ground post
and spend an afternoon doing the work yourself. Just make sure that, if you are connecting the ground wire to the
household ground (as opposed to the ground terminal on your system’s distribution block) you know exactly what you
are doing. Nor is this a substitute for the main electrical ground on your system’s AC feed. It’s an addition, rather like a
bypass cap, that improves the ground quality seen by the system rather than replacing the existing arrangement. It is
also an essential first step in providing the best possible operating conditions for your system.
However, there are some situations (apartments, houses built well above the water table or in very dry areas) where
such an approach is either less effective or physically impossible. If you’ve got a clean ground, then the Entreq boxes
will deliver a worthwhile upgrade on that arrangement. If you haven’t, then they represent the audio equivalent of a
lifebelt thrown to a man adrift on the high seas. You may not have realized your system was drowning, but if that is all
you’ve ever known. . . .
Enter the Entreqs
ntreq offer two different ground blocks, each in two different guises, as well as a range of cables to hook them
up to your system. Built into waxed wooden cases, styled in what can perhaps be best described as craft
fashion, they present a blank face to the world and a terminal or terminals on the rear.
The Minimus is a small unit mainly intended to ground a single component or a pair of components such as a transport
and DAC. It stands on three turned wooded feet, each enclosing an M8 nut to allow spiking or the use of other
threaded feet. The only feature of note is a single binding post on the rear panel that will accept spades or 4mm
banana plugs. Asking price is £200, although there is also a Silver Minimus that is externally similar but will set you back
£400, which seems like quite a lot for what looks remarkably like a block of wood with a plank for a front panel. But pick
up the Minimus and it all starts to make (at least some sort of) sense. That little box is surprisingly heavy and also very
dead to the touch. Give it a shake and you’ll hear the loose, granular filling rattle or slide, like large-grain sand. What’s
in the box? Entreq are close-mouthed about the actual elements, but it is a granular mixture comprising a whole range
of different carefully selected compounds and constituents.
Perhaps the easiest way of thinking about this is to literally consider it a box of ground -- as in what makes up your
back yard. Sink a grounding post into the earth and the precise make up of your soil, how wet it is and what other
elements or pollutants it contains will all impact its effectiveness and nature as an electrical ground. In theory, all
ground posts should extend as far as the water table, but not only is that not always possible, the water table itself
can rise and drop, especially over a period of years. So, as you can see, it’s not quite as simple as hammering a
conductive rod into the ground. What Entreq have done is experiment in order to develop the best possible filler for
their boxes, a mix that delivers consistent musical results despite its physical isolation from any geographical entity."


Das geschriebene steht in keinem! Konflikt zu einer vernünftigen Massefuehrung , wie sie zB in dem Studio durchgefuehrt worden ist.

Die Problematik entsteht, da all diese Konzepte von einer theoretisch "sauberen" und "konstanten" Masse ausgehen.

Dies ist aber in den meisten Anwendungsfällen nicht der Fall, da die Masseverbindung im Haus von vielen Verbrauchern geteilt wird.

In der polnischen High End Scene sind separate Erdungsdorne beliebt, diese werden in das Erdreich getrieben und bieten der High End Anlage eine saubere und exclusive Erdverbindung.

Wie im obigen Text korrekt angemerkt, ist eine solche Lösung nicht fuer jeden durchführbar.

Hier setzen Produkte wie Entreq und Tripoint an, die dem individuellen Geraet einen Erdungspunkt simulieren wollen.

Wie es technologisch erreicht wird, dass diese Kisten ein Potential entwickeln, welches dazu fuehrt, dass HF Verunreinigen der Masse absorbiert werden, ist mir erst einmal egal, solange es in meiner Anlage funktioniert.

Wie ebenfalls oben beschrieben, ist es gut moeglich, dass die Geraete keinen Effekt haben, ähnlich der Wirkung von Netzfiltern, ist Strom und Masse im Haushalt gut, muss man nichts rausfiltern.

Ein Mitforist betreibt einen Messgerät zu elektromagnetischen Feldstaerkemessung. Stellt man dieses auf eine Heizung, kann man sehr schoen die an- und abschwellende Feldstärke messen, die im obigen Artikel dem schwankenden MassePotential der Hauserde zugewiesen wird.

Halten wir fest:


- eine gute Massefuehrung mit separaten Kabeln hilft jeder Anlage!

- es kann die Signalmasse und/oder die Gehäusemasse verwendet werden (ausprobieren)

- diese Kabel weisen (zumindest meine Erfahrung) klare Klangunterschiede auf, ein interessantes Feld fuer die Kabelbauer!

- ist die Hausmasse gut, braucht man nicht viel mehr machen

- ist die Hausmasse mit HF belastet, gibt es verschiedene Ansaetze

- einer dieser Ansaetze sind separate Grounding Boxen, die eine saubere Masse simulieren, zB Entreq und Tripoint

- schwankt das Potential der Hausmasse sehr, ist dies nicht gut, da das wechselnde Potential von den Geraeten mit unterschiedlicher Geschwindigkeit umgesetzt wird, somit Ausgleichsströme zwischen den Geraeten entstehen

- hier setzen aktive grounding Loesungen, zB Telos GNR an

Gruss
Juergen
Mit Zitat antworten
 


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