User Guide

Dugan Model E-3A User Guide Dugan Music System and Gain Limiting
61
Controlling Ambience
Unlike the Speech System, the Music System does not maintain constant ambience. If
you need to smooth out the ambience, two methods can be used separately or together:
•Thelast hold function keeps the last mic used at full gain. The last hold is activated
when a channel’s
automix gain stays above -3 dB for 0.5 seconds. When another
mic passes the same criteria, it becomes the
last hold mic.
To activate the
last hold function for a group, click that group’s last hold button.
• Raise the
auto mix depth control until you do not hear an objectionable shift in
ambience. Just a few dB of attenuation may suffice to reduce bleed or feedback.
Gain Limiting
To learn the basic concepts used in gain limiting, see Chapter 2: Theory of the Speech
and Music Systems.
Gain Limiting and the Music System
The Dugan’s unique implementation lets you set the number of mics allowed at full
gain before gain limiting occurs. This can prevent feedback as the Music System turns
on more mics.
NOTE: Gain Limiting is the only automatic mixing function that can be active when a channel
is in man mode.
To activate Gain Limiting:
1. Activate the NOM buttons on each channel you wish to include.
2. Set the master
NOM gain limit field to the maximum number of mics that you will
allow at full gain simultaneously (default is 1; range is 1–10).
3. Toggle the meter title to
NOM gain limiting to view the amount of gain reduction.