"Fella" wrote in message
...
Arny Krueger wrote:
"Fella" wrote in message



The jury is still out on this one Ruud.

http://www.tannoy.com/media/Eyris.pdf

In the manual the tannoy people say something *very*
similar to what our pal shp is saying.


It's only similar if you have not a clue about how electricity works.

Shp claimed that some manufacturers have a third (fifth) post to do this
earthing thing, and so yes, the tannoys do have it. Hence the similarity.


There's an immense difference between chassis grounding and grounding the
hot terminal.

How do you know *what* the tannoy people ground? How is it obvious from
the URLs I provided? This is not a confrontational question, it is just a
question, if you, or anyone else cares to answer it.

**Because Tannoy state as much in their promotional literature.

"......provides the facility for drive unit earthing, or grounding."


I did ask, to be sure, about the original "tweak" suggestion of shp (the
3rd one of course) to a friend who actualy builds some sweet sweet
sounding amps in these parts of the woods, has his own private workshop /
lab kind of a dungeon, etc, and he also confirmed that what shp is
suggesting is actually quite dangerous and would cause a short in most
cases.

**Of course. SHP is just joking. It took me awhile to figure that out.



The difference can be quanitifed as being the difference
between good wiring practice


Does this mean that you are endorsing the tannoy "marketing hype" as
others suggest it is? Again, just a question, nothing confrontational.

**What Tannoy are suggesting is of limited benefit, since most of the
problem lies with the speaker cables themselves. And only under extreme
conditions. I have encountered the problem a few times, where the client
lived close (less than a few hundred Metres) to a local TV transmission
tower. The high power RF insinuates itself on the speaker cabling, then
enters the amplifier (through the outputs) and is then routed to the front
end of the amplifier via the negative feedback line. The only solutions a

* To shield everything in the speaker circuit. This includes the cables, the
crossover and the speakers themselves.
* To use an amplifier which has no global NFB or one which uses 'nested'
feedback.


--
Trevor Wilson
www.rageaudio.com.au