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Old 15th September 2013, 10:53 PM   #31
DUG is offline DUG  Canada
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Quote:
Originally Posted by hitsware View Post
Needs to be toroidal .....
Why?
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Old 15th September 2013, 11:24 PM   #32
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I don't know the theory ....
BUT !
I have tried passing audio through standard
power transformers ('EI' granted not 'C') and
it does not work. (Try a squarewave to see)
Toroids however pass a nice signal.
(which is why some don't like them for power
because they pass all the cr*p on the mains
into the power supply)
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Old 15th September 2013, 11:29 PM   #33
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Quote:
Originally Posted by hitsware View Post
I don't know the theory ....
BUT !
I have tried passing audio through standard
power transformers ('EI' granted not 'C') and
it does not work. (Try a squarewave to see)
Toroids however pass a nice signal.
(which is why some don't like them for power
because they pass all the cr*p on the mains
into the power supply)
How much time do you spend listening to square waves? Personally I don't find them terribly musically satisfying.

se
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Old 15th September 2013, 11:33 PM   #34
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OK. Then listen through an EI core compared to a toroid.
(And I mean pwr xfmr not audio xfmr)
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Old 16th September 2013, 12:08 AM   #35
DUG is offline DUG  Canada
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Quote:
Originally Posted by hitsware View Post
I don't know the theory ....
BUT !
I have tried passing audio through standard
power transformers ('EI' granted not 'C') and
it does not work...
I believe it did not work.

I also believe you have associated power E-I cores with all E-I cores.

There are several (if not more) types of material used in laminations. (whether E-I or C)

Power transformer manufacturers will not spend the extra cost on a material that runs low loss to 20kHz when they only need it to work at 60Hz.

When I spec inductors for the simulated load at work I have to specify what frequency they will be exposed to...kind of important.

I would have suggested to tinitus that he insure the C-cores he was about to try were audio cores and not power cores.

But that is just me.

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Old 16th September 2013, 12:10 AM   #36
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Quote:
Originally Posted by hitsware View Post
OK. Then listen through an EI core compared to a toroid.
(And I mean pwr xfmr not audio xfmr)
If it's about listening, why bring up square waves?

se
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Old 16th September 2013, 12:40 AM   #37
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Pardon my attempt at crude quantification ....
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Old 16th September 2013, 12:44 AM   #38
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> I also believe you have associated power E-I cores with all E-I cores.

NO !

I'm saying 'power supply' grade toroids perform (for passing audio)
as well as 'audio' grade EI transformers .
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Old 16th September 2013, 01:01 AM   #39
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Quote:
Originally Posted by hitsware View Post
Pardon my attempt at crude quantification ....
Well, after Michael Fremer's gushing review of the Tara Labs Cyberlight cables, I don't believe in quantification anymore, crude or otherwise.

se
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Old 1st April 2014, 05:07 PM   #40
tinitus is offline tinitus  Europe
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tried it now, and seems to work
or maybe I should just say, I hear something
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