Re: Soundscape Recordings, mic conversion

[Walter Knapp <>]

Klas Strandberg wrote:
> 
> The membrane of a omni faces "nothing", except "vacuum". There is no air
> behind it. The back is closed, or has a "can" behind which size is tuned so
> that it "helps" the membrane moving, still maintaining a "flat" frequency
> curve.

The Omni's I've examined were sealed, but did not have a vacuum. They
all seemed to be at normal pressure behind. In fact, some were vented,
though not presumably enough to let sound vibration in. 

How widespread is using a true vacuum behind?

Walt



________________________________________________________________________
________________________________________________________________________



Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/