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SubjectI stand corrected. NT Reply to this message
Posted byPinto Bravo
Posted on03/20/07 03:49 PM

> > I'm sure the output from your amp to the speaker is a DC signal, and therefore
> > has direction.
> Sound is produced by having a surface vibrate back and forth, pushing and
> pulling air. The vibrating surface is moved by means of an electromagnet, driven
> by the voltage from the wire. The "relaxed" position of the surface is
> equivalent to zero voltage, if you want sound you have to make the surface move
> "above" and "below" the zero position, which means positive and negative
> voltages. Et voila', AC signal.

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Subject  Posted byPosted On
*Whats wrong with audiophiles?  jajig03/20/07 03:42 AM
.*AC may come from your wall.....  Pinto Bravo03/20/07 09:41 AM
..*no  Terry Bogard03/20/07 03:11 PM
....I stand corrected. NT  Pinto Bravo03/20/07 03:49 PM