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Lab.gruppen PLM Series User Manual

Lab.gruppen PLM Series
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PLM
Series
Powered Loudspeaker Management
systems
Rev 1.1.9
Item: OM-PLM
Operation Manual

Table of Contents

Other manuals for Lab.gruppen PLM Series

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Lab.gruppen PLM Series Specifications

General IconGeneral
DSPYes
NetworkEthernet
ConnectorsXLR, SpeakON
CoolingForced air
Protection FeaturesOverheat, DC, short circuit
Control SoftwareLake Controller

Summary

Important Safety Instructions

Important Safety Instructions

Read, keep, heed, and follow all safety instructions to prevent hazards.

WARNING and CAUTION Statements

WARNING

Warnings regarding rain, moisture, liquids, earthing connection, and plug accessibility.

CAUTION

Caution against removing screws and user-serviceable parts.

User Responsibility and Maintenance

User Responsibility

Covers grounding, speaker output hazards, speaker damage, and maintenance responsibilities.

Mains Connection Grounding

Apparatus must be connected to a grounded socket outlet.

Speaker Output Hazard on Amplifiers

Warnings about hazardous output voltages and connecting/disconnecting cables.

Speaker Damage

Information on potential loudspeaker damage from overpowering.

Welcome and Introduction

Amplifier Platform

Details on FP+ Series amplifier platform, power density, Class TD stages, and cooling.

PLM Series Features

ISVPL™

Inter-Sample Voltage Peak Limiter tailors output to load characteristics.

Load Verification & Performance Monitoring

Proprietary DSP tools for load verification and real-time performance monitoring.

Lake Processing and Controller

Integration with Lake Processing, programmable crossovers, EQ, and limiting.

Networking and Documentation

Dante™ Audio Network

Dante digital audio networking over Ethernet for simplified configuration and low latency.

Installation Procedures

Mounting

Guidelines for airflow, rack space, and specific rear mounting options.

Cooling and Operating Voltage

Cooling

Explains forced-air cooling system, airflow direction, and temperature sensing.

Temperature Sensing and Protection

How the system protects against overheating and the importance of dust filters.

Grounding and Product Overview

Front Panel Overview

Overview of front panel controls: LCD, function buttons, rotary encoder.

Back Panel Overview and Connectors

Back Panel Overview

Overview of the back panel layout for 4-channel and 2-channel PLM models.

Input and Link Connectors

Details on Analog Inputs, Analog Links, AES/EBU Inputs, and AES/EBU Link.

Analog Inputs

Description of XLR3F connectors for electronically balanced analog inputs.

AES/EBU Inputs

XLR3F connector for AES/EBU digital audio signal.

Output Connectors

Information on binding posts or Neutrik Speakon connectors for power outputs.

Network and Power Connections

Ethernet and Power Connectors

Details on RJ45 etherCON network connections and mains power connector.

Primary Network Connector

RJ45 etherCON for Ethernet control network and Dante digital audio.

Secondary Network and Power

Mains Power Connector

Neutrik powerCON connector for AC mains input.

Operation and Performance Details

Operation Precautions

Precautions before making connections, AC voltage check, and powering on.

Power Output Performance

Details on Class TD technology, efficiency, and load conditions.

Symmetrical Power

Table showing symmetrical load power ratings for different models.

Power Ratings and Protection Systems

Asymmetrical Power

Table showing asymmetrical load power ratings for different models.

Amplifier and Load Protection Systems

Overview of protection circuits and indications via LEDs and software.

Inter-Sample Voltage Peak Limiter (ISVPL)

Explains ISVPL as a voltage limiter and its operating principles.

Low Distortion Profiles

Describes Universal and Sub/LF profiles for ISVPL limiting.

ISVPL Profiles and Limiter Functions

Current Peak Limiter (CPL)

CPL ensures output transistors stay within Safe Operating Area (SOA).

Power Average Limiter (PAL)

PAL controls AC current to power supply to prevent PSU overload.

Advanced Protection Features

Breaker Emulation Limiter (BEL™)

BEL models external breaker temperature and limits mains current.

Under Voltage Limiter (UVL™)

UVL reduces mains current draw when voltage drops below a threshold.

Current Average Limiter (CAL™)

CAL monitors RMS current to protect power output stages from overload.

Voltage Clip Limiter (VCL)

VCL acts to prevent clipping on subsequent peaks when PSU regulation is exceeded.

Temperature and Protection Systems

Temperature Protection

Describes temperature sensing system protecting against overheating.

Overview of Temperature Protection

Details on temperature monitoring and fault indication.

Power Output Channels Temperature

Indicates power output channel temperature warnings/faults via LEDs.

Power Supply / DSP Temperature

Indicates PSU or DSP area overheating via red LED and message.

Output Protection Mechanisms

DC Protection

Prevents damage to loudspeakers or components from DC at the output.

VHF Protection

Protects against Very High Frequency content in the input signal.

Output Protection and Power Supply

Short Circuit Protection

Detects low impedance or short circuit at output terminals, mutes output.

Power Supply

Details on R.SMPS, power factor correction, and universal power supply.

Low Inrush Current Operation

Signal Flow and Lake Processing

Signal Flow

Depicts audio signal flow and adjustment points within a PLM.

Power Output Section: Limiting and Sensitivity

Explains Current Peak Limiter (CPL) and ISVPL for output management.

Lake Processing System

Lake Processing and Control

Integration with Lake Processing, programmable crossovers, EQ, dynamics.

Module Files and Presets

Front Panel Interface Overview

Overview

Control and monitoring via LCD, function buttons, and rotary encoder.

Warning, Fault and Mute Indications

Visual indications of faults/warnings via LEDs and LCD.

Dynamic Buttons, Controls, and LEDs

Dynamic Buttons, Controls and LEDs

Details on LCD, dynamic buttons, controls, and LEDs.

Rotary Encoder and Function Buttons

Rotary Encoder

Used for parameter adjustment and changing meter views.

Mute Functionality

Mute Functions

Overview of PLM mute functions (Input, Module Input/Output, Power Output).

LED Status Indications

LED Fault, Warning and Clip Indication

Tricolor LEDs convey status: faults, warnings, clip, mutes.

Clip Indication

Monitors input and output clip conditions.

Warning and Fault Indicators

Warning or Fault Indications

Details yellow LED for warnings and red LED for faults.

Fault, Clip, and Mute Summary

Meter Mode Operations

Module and Temperature Views

Input View and Menu Mode

Menu Structure and Module Submenu

Limiter Settings and Input Configuration

Limiters Configuration

Adjusting ISVPL Threshold, ISVPL Profile, MaxPeak, and MaxRMS levels.

Router and AES Configuration

Frame Submenu and Information

Firmware, Latency, and Frame Reset

Load Monitoring and Verification

Back Panel Interface Overview

Speaker Outputs

Available output connectors: binding posts or Neutrik Speakon.

Four-Channel Speakon and Binding Posts

Analog Input/Output and XLR Wiring

Analog Inputs and Outputs

Details on analog input and link XLR connections.

AES3 Digital I/O and Network Connections

AES3 Digital I/O

Details on AES3 XLR connector and connections.

RJ45 etherCON® Network Connections

Two RJ45 etherCON connections for network connectivity.

Network and Power Inlet Details

Appendix and Faults Overview

Faults and Warnings Overview

Overview of fault/warning indications via LED and LCD.

Fault, Clip, and Mute Indications

Maintenance and Default Settings

Application Guide Introduction

Mains Supply and Gain Structure

Gain Structure

Overview of gain adjustments in the signal path.

Gain Optimization Strategies

Gain / Level Optimization

Maximizing volume capability and minimizing noise.

Analog Input Examples and Speaker Configurations

AES3 Digital Audio and Latency

AES3 Interconnection and Cable Types

Digital Clock Configuration

Technical Specifications

Model Specifications

Lists specifications for PLM 20000Q, PLM 14000, PLM 10000Q.

Warranty and Support Information

General Warranty

General warranty terms, coverage, and exclusions.

Technical Assistance and Service

How to obtain technical assistance and service.

Factory Service and Trademarks

Factory Service

Instructions for factory service, product return, and contact info.

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