Re: I Call For A Lynching

"ScottW" <ScottW48@xxxxxxxxxxx> said:


<vinylanach@xxxxxxx> wrote in message
news:1189209400.243367.74060@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx

Of course. With the Shunyata power conditioner and power cords in
place, some of the hum and noise I experienced with a low-powered SET
and high-efficiency speakers completely disappeared.


All that tells me is that your SET power supply implementation is
flawed. I wonder if the Shunyata includes an isolation
transformer. That could explain some of your experience.
Of course isolation transformers aren't particuluarly expensive,
especially one for a low powered set.
Did you open the stardust box and see what magic was
inside?


An isolation transformer lets both mains leads "float" respecive to
ground (or neutral) , which could be an improvement in case of ground
loops via interconnects (in case of potential differences between
grounds of components).

In some cases, problems may arise when one apparatus is grounded and
the other is not.

From the description, I don't think there's an isolation transformer
inside the Shunyata.
It is well known that some materials can absorb RF energy, such as the
anti-static carbon mats used for transporting semiconductors.

How this may be of influence on a 50/60 Hz power supply is beyond my
knowledge, however.


There's a lot of stuff on the market that
simply doesn't work. But there are power accessories that do work,
especially if you have a highly-resolving system.


Or you have components with substandard power supplies designed in.
A very big functional part of every active device, pre-amp, power amp,
CD is to condition its AC power source to be suitable for use
to its circuits. Virtually none of these circuits can be powered
directly by 120 VAC. They all required built in power
conditioners and converters to work at all. If yours needs external
help, that isn't much of an appraisal.


As an electronic engineer, and with the knowledge I possess now,
I tend to think that stuff like this can't work like they claim it
does..
And yet, even I do use different types of capacitors and cables in my
system that seem to sound different.

Next month, I'm about to do a double blind test on several components
(capacaitors and cables) to see if what I think I hear, really is due
to audible differences.
Candidates: Clarity Cap SA:
http://www.claritycap.co.uk/ and

John Van Gent cables :
http://www.johnvangent-audiokabels.nl/nl/ned_inleiding.html

The test will be proctored by Jacco Dekkers from NXP (former Philips
Nat Lab).

--

- Maggies are an addiction for life. -
.

Relevant Pages

  • Re: isolation transformer needed
    ... so you can look at the control ICs a relatively low capacity isolation ... If you want to isolate 1000 watt power ... transformer rated at something over 1000VA. ... with a dummy load BEFORE hooking it up to it's intended load. ...
    (sci.electronics.repair)
  • Re: Moving Horizontal Lines - Help
    ... sets and consumer electronics do not have isolation built in at the ... must have a three prong AC power cord. ... current television isolation. ... electronics do not have isolation built in at the signal ground level" ...
    (alt.tv.tech.hdtv)
  • Re: Government wants to abolish standby button
    ... isolated circuitry in the rest of the TV. Isolation near the mains isn't ... After that the main source of standby power is probably losses in the front ...
    (uk.tech.digital-tv)
  • Re: Parasitic Capacitance between TO220 Tab and Ground
    ... It's case to sink capacitance is 12pF. ... Why do power mosfets have the drain connected to the tab? ... but this is acheived at the cost of a physical isolation layer. ... heatsink on the power mosfet. ...
    (sci.electronics.design)
  • Re: I Call For A Lynching
    ... some of the hum and noise I experienced with a low-powered SET ... I looked them up on the web - there seem to be two modesl of Shunyata power ... conditioner, ... I don't think there's an isolation transformer ...
    (rec.audio.opinion)