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Old 23rd March 2009
Lives for gear
G. E.'s Avatar

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Lightbulb Speaker/Stand Eigenmode

Originally Posted by G. E. View Post
... its a high mass stand with internal damping ...
Talking 'bout mechanics: I've never calculated the actual forced oscillation of the stand but I've noticed that knocking pretty hard against the stand/speaker-unit it "swings" 2-3 times within a second before it stops. Amplitude on top of the speaker may be +-1mm [~0.04"]. So the Eigenmode (in the bass-cabinet axis) of the mechanical system seems to be around a few Hz and is therefore subtancially lower and pretty much decoupled from the audible frequency-range of the speaker.