DLM-1 Series Installation Guide V1.0
10
Local inputs
When modules are “daisy-chained” together in this way, the audio signals from each module are summed together to produce
a single mono feed to the host unit. Thus two (or more) microphones may be connected within a zone and either or both used
as wished, with individual mic level controls at their respective modules.
An internal gating circuit on each module automatically “disconnects” any chained modules which are not in use, to minimise
noise contribution. This also applies to multiple music sources simultaneously connected (though the possibility of resulting
cacophony makes this a less likely scenario!)
DLM-1 PRIORITY OPERATION
If the
MIC PRIORITY
button on the DLM-1 faceplate is not pressed, mic and/or line signals connected at the module will
be routed, and heard through the audio system at volumes which can be controlled from the
MIC LEVEL
and
MUSIC LEVEL
controls on the faceplate.
The DLM-1’s Priority facility operates as follows: with MIC PRIORITY
pressed, a signal present at the mic input, post the
microphone input level control, will cause the line input signal connected at the same module to “duck” by 30 dB, giving the
microphone priority over the music. The attack time (how quickly the music level drops when the mic is used) and release time
(how quickly it recovers after the mic signal stops) are pre-set, and optimised for best audible results.
NOTE
: When using microphone and/or music sources simultaneously from multiple linked modules, Priority mode will give
each module’s microphone input priority over all other audio inputs, both via its local mic-over-music action and its link to
other modules. A module’s position in the linked chain will therefore determine which other modules it has priority over. It
is recommended that the Priority function is not used if this position-dependent behaviour may produce unwanted ducking
effects.
