Lab.gruppen PLM 10000Q, Operation Manual

Page: 33 / 106

PLM Series Operation Manual rev 1.1.3
8. Signal Flow and Processing
33
Additionally, the physical inputs to the PLM can be mixed, with level adjustment, prior to entering the
Lake module. This adjustment is available only through the Lake Controller software.
8.1.2 Mute points
Unlike traditional amplifiers, the PLM can be muted at several points in the audio chain. It is important to
understand the location of these mutes and how to control them.
8.1.3 Power Output Section: Limiting and Sensitivity
The Current Peak Limiter (CPL) dynamically limits the drive to the power stage based on three parameters:
sensed output current level, feedback from the output stage, and sensed voltage clip from the ISVPL.This
ensures that power output is maintained within the design limits of the PLM.
The adjustable Inter-Sample Voltage Peak Limiter (ISVPL) sets the PLM’s maximum output voltage and
therefore also the maximum output power. The ISVPL setting is made via
MENU > MODULE > LIMITERS
> ISVPL
, and can also be set from the Lake Controller software.
Figure 8.1: PLM Signal Flow Diagram (Part 2) four power output channel model shown
Input
Router
1
(Mute)
Input
Router
2
(Mute)
Input
Mixer A
Input
Mixer B
EQ Delay
EQ Delay
Crossovers
Output Routing
AMP
Attenuator
Mute
Phase Rev
Attenuator
Mute
Phase Rev
Attenuator
Mute
Phase Rev
LoadSmart
SpeakerSafe
LoadSmart
SpeakerSafe
LoadSmart
SpeakerSafe
LoadSmart
SpeakerSafe
Amp Gain
Amp Gain
Amp Gain
Amp Gain
Attenuator
Mute
Phase Rev
Module:
Gain
Phase Rev
Mute
Analog 1/2
AES 1
AES 2
Dante X
Dante Y
Analog 1/2
AES 1
AES 2
Dante X
Dante Y
AMP
AMP
AMP
ISVPL
ISVPL
ISVPL
ISVPL
Module:
Gain
Phase Rev
Mute
Output EQ
LimiterMax
RMS / Peak
Module Output:
Gain/Level
Phase Rev
Mute
Output EQ
LimiterMax
RMS / Peak
Module Output:
Gain/Level
Phase Rev
Mute
Output EQ
LimiterMax
RMS / Peak
Module Output:
Gain/Level
Phase Rev
Mute
Output EQ
LimiterMax
RMS / Peak
Module Output:
Gain/Level
Phase Rev
Mute
Output EQ
LimiterMax
RMS / Peak
Module Output:
Gain/Level
Phase Rev
Mute
Output EQ
LimiterMax
RMS / Peak
Module Output:
Gain/Level
Phase Rev
Mute
4
1
2
3
1
2
3
5 6
Important additional information on setting the gain
structure within the PLM can be found in section
12.3.