Operation Manual

Application Guide
87
PLM Series Operation Manual Rev 1.3.0
10.3.1 Input Headroom (Analog Inputs Only)
Input Headroom should be set to 12 dBu if the source can be limited to 12 dBu; otherwise it should be set to
26 dBu. This setting does not affect the other gain stages, or the overall noise oor; it allows control of the
appropriate headroom at the input stage only.
To adjust, navigate to I/O CONFIG > INPUT CONFIGURATION in the Lake Controller. Please refer to the
Lake Controller Operation Manual for further details.
10.3.2 Input Mixer
Input Mixer gains can remain at 0.00 dB for most congurations; if only one input channel is used per
Module, the other can be set to -INF.
To adjust, navigate to I/O CONFIG and tap the Input Mixer blocks for the Module in the Lake Controller.
Please refer to the Lake Controller Operation Manual for further details.
10.3.3 Module Input Gain
Input Gain is used to adjust the level between different speaker cabinets in the system. This gain can remain
at 0.00 dB unless a lower level is required for the cabinet/s driven by this Module.
To adjust, navigate to MODULES > EQ/LEVELS > LEVELS in the Lake Controller. Please refer to the
Lake Controller Operation Manual for further details.
10.3.4 Module Output Gain
Factory and User Gain are provided for each Module output. These two stages provide a level of security
and control for the system designer (Factory) and a further level of adjustment for the user (User), both of
which combine to balance the level between frequency bands in a multi-way crossover (Contour congura-
tion) or the Module output level (Mesa conguration).
1. Factory Gain is set by the system designer and can be hidden within the Module le. The Factory
Gain parameter is only accessible when the Module is unlocked and the Lake Controller is in
Designer Mode. Adjust via MODULES > LEVELS > METER OPTIONS > ADJUST FACTORY.
2. User Gain is editable by a user unless the system designer has locked away the parameter; adjust
via MODULES > LEVELS.
Generally, output gain values are congured within a Module / loudspeaker preset le and should not need
to be adjusted further.