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In the Forum: Audio Discussions
In the Thread: About rationalism of twin-units isolation efforts.
Post Subject: Noise, Mode, Frequency, and Death by KnowledgePosted by Paul S on: 10/28/2008
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Well, if cost if no object, why not put everything on those cool SRA stands?  Besides, Mike probably uses the most affordable version, anyway...

Of course those will not in any case address all sonic intrusions, which include not only structural but also air-borne vibrations, and also most discrete components and component interfaces, with noise emanating, propagating and disseminating in electrical, mechanical and electro-mechanical modes throughout any given real world circuit.  Decoupling and/or adding weight is not always the best solution, or it is not always the only solution.  Theoretically, in cases of mechanical noise transmission, there could be instances where merely loosening something could lessen a frequency spike, resulting in "better" sound.  There are always innumerable ways to simply change the noise spectrum, to re-distribute noise, and this fact has been well explored and thoroughly exploited by all manner of hopeful tweak vendors.

There are probably plenty of cases where isolation efforts are akin to wearing a tinfoil hat.  For instance, I still use the old PEEK tube dampers, mostly out of habit, but also because there have been times when the benefits were quite obvious.  At this point, I think of them mostly as cheap insurance.

Is this a question of when and where very specific noise-mitigation measures should be undertaken, or is this a question of just going through the noise-mitigation drill?  Without fairly rigorous prior and post-mitigation testing, who can be certain?

But here I should issue a warning:  Adding tap tests to stethescope listening can cause palpitations and even heart failure when applied to hyper-expensive system components.  And God save us from the lowly volt meter!

Best regards,
Paul S

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