> Would you say that a speaker used as a microphone would be more
> sensitive than a conventional microphone?  The speaker has a greater
> collecting area so, if you were looking to detect really faint sounds,
> would a speaker-mic be the way to go?

No, of course not.  What you gain in area is more than destroyed by greater
mass and stiffness/friction and less sensitivity.  (ie the sensitive element
is heavier and harder to move, and you have to move it MORE to get the same
sort of signal out.)

BillW

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