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Audio and Video Talk
Valves / Vacuum Tubes
Tube dampers
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<blockquote data-quote="handsome" data-source="post: 747117" data-attributes="member: 772"><p>Tube characteristics are partly determined by the spacing between the elements of the tube. Vibrations can vary these (in some cases extremely fine) spacings causing the tube to generate signals or modulate the signal it is amplifying. Modern high Gm tubes use extremely close spacing and thus are more prone to this whilst older tubes (like early small signal DHTs) often had elements fixed at only at the base or less rigidly mounted. There is a definite distinction then between a (electrically) noisy tube and one suffering from microphonics.</p></blockquote><p></p>
[QUOTE="handsome, post: 747117, member: 772"] Tube characteristics are partly determined by the spacing between the elements of the tube. Vibrations can vary these (in some cases extremely fine) spacings causing the tube to generate signals or modulate the signal it is amplifying. Modern high Gm tubes use extremely close spacing and thus are more prone to this whilst older tubes (like early small signal DHTs) often had elements fixed at only at the base or less rigidly mounted. There is a definite distinction then between a (electrically) noisy tube and one suffering from microphonics. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Tube dampers
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