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Feel, not hear.
Quote from: peppercorn on 09/12/2010 23:10:57Feel, not hear.I was just thinking of what I can use as an example.
As RD points out, don't run the sine wave test continously.
Quote from: Geezer on 12/12/2010 19:00:21As RD points out, don't run the sine wave test continously.High volume rather than long duration was my concern: a momentary impulse of sufficient amplitude could be enough to dislocate the voice coil and knacker the speaker.
There may be a ...sorry, you cannot view external links. To see them, please
REGISTER or LOGIN circuit in the speaker cabinet to attenuate subsonic frequencies and prevent this sort of damage, but best not to assume.
The range in hearing is quite large. There are some orchestral instruments that produce notes below 30 hz and people that hear this as a note. What is normal for hearing is what is, but somebody that could hear above 30K hz and below 30 hz would certainly be unusual.