Been quiet lately... too much DIY ?

[Doug Tymofichuk]

On Wed, 31 May 2000 18:00:16 -0400 Peter Snow 
<psnow at magma.ca> wrote:


> Also, how about electrostatic speaker technology?  I believe they work
> by exciting ionized air in a metalic grill (sorry, very simple
> explanation of something I don't really understand!).

A thin metallised membrane is charged to a high potential 
and then the audio signal is applied push-pull to some type 
of metal grid on either side of the the membrane. The 
electrostatic forces between the membrane and grids cause 
it to move.

  Seems to me you
> could build a large version of this and drive portions of it both
> horizontally and vertically from different sources to get the spatial
> effect. 
> Any takers?  I can supply a roll of chicken wire to get you started
> :)!   
> 
You could build a wall of these or maybe even magneplaner 
type speakers and pan between them. But this multi-speaker 
approach is not applicable to most listeners, and hence is 
of limited interest to me compared to moving sounds 
spacially with a limited number of speakers (like two). And 
so far this appears to be impractical.

----------------------
Doug Tymofichuk
dougt at cancerboard.ab.ca