David Looser wrote:
wrote
The principle is sound, like balanced audio circuits, it uses a
transformer with two secondaries of half the primary voltage,
connected in series, with the junction earthed and the load supplied
across the two outer ends. You could get a suitable transformer made
for much less than Russ charges.

A similar technique has been used for years for power-tools etc. on building
sites, except that the secondary voltage is 110, rather than 240V. The
centre tap of the secondary of the transformer is earthed, thus the voltage
to earth of each conductor is only 55V. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?

One big benefit: it sounds good, so more can be charged.

"Jason" wrote in message
...
David Looser wrote:

.. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?

One big benefit: it sounds good,

Does it? who says it "sounds good?, and why should it sound any different?
Frankly if it actually made a hap'th of difference to the sound people would
have been doing it decades ago.

so more can be charged.

Well that's the point isn't it? persuade the gullible that it sounds better,
then rip them off.

David.

In message , David Looser
writes
"Jason" wrote in message
...
David Looser wrote:

. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?

One big benefit: it sounds good,

Does it? who says it "sounds good?, and why should it sound any different?
Frankly if it actually made a hap'th of difference to the sound people would
have been doing it decades ago.

so more can be charged.

Well that's the point isn't it? persuade the gullible that it sounds better,
then rip them off.

Last time I looked at that site, they were charging £76 or something for
a "low noise" mains flex (apparently it's magically perfect when it
comes out of the socket)

So, the last time was, and is, the last time

--
geoff

On Sat, 02 Jan 2010 21:09:37 +0000, geoff wrote:

Last time I looked at that site, they were charging £76 or something for
a "low noise" mains flex (apparently it's magically perfect when it
comes out of the socket)

You were looking at the cheap ones, geoff. The real entertainment is to
be had with more expensive items...please do look...!

http://tinyurl.com/y8tp3uq




--
Use the BIG mirror service in the UK:
http://www.mirrorservice.org

On Sat, 2 Jan 2010 19:38:01 -0000, David Looser wrote:

"Jason" wrote in message
...
David Looser wrote:

. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?

One big benefit: it sounds good,

Does it? who says it "sounds good?, and why should it sound any different?
Frankly if it actually made a hap'th of difference to the sound people would
have been doing it decades ago.

so more can be charged.

Well that's the point isn't it? persuade the gullible that it sounds better,
then rip them off.

Hmmm, I guess there ain't too many peops who sit in an anechoic chamber to
listen to their scratchy vinyl.

I reckon all 'high end' hifi is a con, stick it a normal room with yer
average selection of furniture, curtains, etc, and you've just wasted one
hell of a lot of money. Of course, no one is going to admit they've been a
complete plonker......

Now, where's that old Dansette and the 78 of Danny and the Juniors? :-)



--
The Wanderer

There is no place like 127.0.0.1

In message , Jason
writes
David Looser wrote:
wrote
The principle is sound, like balanced audio circuits, it uses a
transformer with two secondaries of half the primary voltage,
connected in series, with the junction earthed and the load supplied
across the two outer ends. You could get a suitable transformer made
for much less than Russ charges.

A similar technique has been used for years for power-tools etc. on building
sites, except that the secondary voltage is 110, rather than 240V. The
centre tap of the secondary of the transformer is earthed, thus the voltage
to earth of each conductor is only 55V. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?

One big benefit: it sounds good, so more can be charged.

Obviously it's the same reasoning concerning the virtues of using
balanced twin feeder versus (unbalanced) coax. If you don't do the
engineering properly with the coax (no balun etc), twin feeder can be a
better bet. Of course, in this case, there's only mains cable which,
unlike coax, has no screening).
--
Ian

"Ian Jackson" wrote

Obviously it's the same reasoning concerning the virtues of using balanced
twin feeder versus (unbalanced) coax.

Is it "obvious"? You are talking about signal connections above, but this is
a power supply. Please explain exactly how using a balanced mains supply
affects sound quality.

David.

In message , David Looser
writes
"Ian Jackson" wrote

Obviously it's the same reasoning concerning the virtues of using balanced
twin feeder versus (unbalanced) coax.

Is it "obvious"? You are talking about signal connections above, but this is
a power supply. Please explain exactly how using a balanced mains supply
affects sound quality.

Sorry. I forgot to add a cynical, satirical, sarcastic smiley. [I'm no
good with smileys.]
--
Ian

David Looser wrote:

A similar technique has been used for years for power-tools etc. on building
sites, except that the secondary voltage is 110, rather than 240V. The
centre tap of the secondary of the transformer is earthed, thus the voltage
to earth of each conductor is only 55V. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?
David.

It sounds like it's doing something useful when you're trying to part a
fool from as much of his money as possible.

David Looser wrote:

wrote

The principle is sound, like balanced audio circuits, it uses a
transformer with two secondaries of half the primary voltage,
connected in series, with the junction earthed and the load supplied
across the two outer ends. You could get a suitable transformer made
for much less than Russ charges.

A similar technique has been used for years for power-tools etc. on building
sites, except that the secondary voltage is 110, rather than 240V. The
centre tap of the secondary of the transformer is earthed, thus the voltage
to earth of each conductor is only 55V. As a safety technique it has it's
value, but what is the advantage when feeding audio equipment?

David.

Have a Google for 'humdinger' (and/or 'hum dinger').

--
from
Aero Spike
Not a member of the RSGB for 50 years 1959 - 2009