• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Chassis material

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jlsem

jlsem

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Joined 2003
You have me at loss on that one. While obviously just hitting something isn't scientifically rigorous, why is it worthless? Simple mechanical excitation says nothing of value about a material's resonances? I fully understand the final result must take into account the susceptibility and frequencies of the devices mounted on the chassis.
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You're correct, I only said it was unscientific. You may rap on a piece of metal and the sound may seem to damp quickly, but it may still be oscillating (inaudibly) enough to make a difference. See nhuwar's post above for one method of analyzing the material in question.

All of my input to this discussion only pertains to metals.

John
 
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