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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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Tweakers' Asylum Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ. |
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In Reply to: I would worry about the transformer on a rubber pad. posted by Norm on April 16, 2012 at 20:15:53:
energy can not be created or destroyed: all one can do is to transform that energy. The application of AC on a power transformer has what they call a magnetostriction effect on the transformer core. The hum is is unfortunately part and parcel of using a transformer.
Personally, I find that transferring that energy to a chassis which contains your actual electronics is worse than isolating the hum where it is generated. That's probably one reason why separate power supplies often sound "better": the hum from the transformer is isolated from the actual electronic circuit.
Even with EI core transformers, a routine mod for me is to mount the transformer on rubber grommets. That additional isolation adds a degree of warmth to the component and gives a noticeable increase in midrange detail. This applies not only to tube gear, but also to solid state fully transistorized gear, too. Of course, there are alternate means of warming up a circuit design, and isolation of the transformer may accentuate the issue, so be aware.
YMMV, obviously...
Stu
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Follow Ups
- remember the laws of thermodynamics? - unclestu 14:17:51 04/17/12 (7)
- I was talking with a manufacturing friend today - Norm 15:34:29 04/17/12 (6)
- I , too, - unclestu 14:04:17 04/18/12 (4)
- unclestu_Construction question - dmzwizard@yahoo.com 06:12:40 04/21/12 (3)
- My guess - unclestu 12:47:07 04/23/12 (2)
- RE: unclsestu_question about dies - dmzwizard@yahoo.com 13:34:28 04/23/12 (1)
- RE: unclestu_question about dies - unclestu 15:34:43 04/23/12 (0)
- RE: I was talking with a manufacturing friend today - dmzwizard@yahoo.com 18:56:52 04/17/12 (0)
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