On audio systems, a factor comes into play known as NOM or Number of Open
Microphones.
As a system uses more microphones, the system gain must be reduced to
prevent feedback. Hence this usage of automixing microphones. But all are
not
created equal in this arena. Dan Dugan developed or discovered that the
correct
operation of said system requires the logarithmic level detection with
summation of the inputs as a reference. Altec Lansing was licensed for using
this
technology for their mixers. Shure also makes a similar system for audio
conferencing. Since you have the Shure microphones, you might double check on
the mixer. Some manufacturers use gating for the mixer inputs, this allows
one open microphone if the source signal is strong enough to reach a preset
threshold. This is still just a mixer that is gated, and does not provide
acoustic gain adjustment for all open microphones. Avoid this type of mixer.
Steve L. Martin
Pres./CEO
_Surf Side Sound, Inc._ (http://www.surfsidesound.com/)
_________________________________________________________________
KX-T Mailing list --- http://kxthelp.com/
Subscription changes: http://kxthelp.com/mailman/listinfo/kxt
