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Lab.gruppen PLM 20K44 User Manual

Lab.gruppen PLM 20K44
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PLM+ SERIES
Powered Loudspeaker Management™ System
Operation Manual
Rev. 3.0.1
Item no. OM–PLM+
PLM+ SERIES
Powered Loudspeaker Management™ System
Rev. 3.0
Quick Start Guide
PLM 20K44
PLM 12K44
PLM 5K44
Item no. QSG-PLM+SERIES
Incorporating technologies from
PLM 20K44
PLM 12K44
PLM 5K44
Incorporating technologies from
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Lab.gruppen PLM 20K44 Specifications

General IconGeneral
Number of Channels4
Max Output Power (All Channels Driven)20000 W
Output Power per Channel (2 ohms)5000 W
Output Power per Channel (8 ohms)2500 W
Gain32 dB
Pilot Tone ManagementYes
THD+N< 0.1%
NetworkingEthernet
Input Impedance10 kOhm balanced
Frequency Response20 Hz - 20 kHz
Dimensions19" x 3.5" x 15.7"
Input ConnectorsXLR
Output ConnectorsSpeakOn

Summary

1. Important Safety Instructions

1.1. Approvals

Lists compliance with EMC and Low Voltage Directives and safety standards.

1.2. Warnings

Explains warning symbols (lightning bolt, exclamation point) and provides critical safety information.

1. Important Safety Instructions

1.2.3. Caution

Advises against removing screws and refers servicing to qualified personnel.

1.2.4. User Responsibility

Details user's responsibility regarding mains grounding and speaker output hazards.

2. Introduction

2.1. Welcome

Welcomes the user and highlights product features like performance and reliability.

2.2. Main Features

Summarizes sophisticated technologies and benefits of the PLM+ Series.

2.2.1. Amplifier Platform

Describes Class TD/D technology, cooling, power supply, and protection.

2.2.2. Amplifier DSP (Digital Signal Processor)

Mentions features controlled by the on-board Digital Signal Processor.

2.2.3. Lake Processing and Controller

Integrates with Lake Processing for EQ, delay, crossover, and limiting.

2.2.4. Analyzer Plug-in

Mentions integration with third-party real-time analyzers via Lake Controller.

2.2.5. Dante™ Audio Network

Describes Dante networking for simplified setup and low latency.

3. Installation

3.1. Unpacking

Instructions for opening carton, checking contents, and damage.

3.2. Mounting

Details airflow requirements and rack mounting for optimal cooling.

3. Installation

3.2.1. Rear Mounting

Explains fitting rear support brackets for rack installation.

3. Installation

3.3. Cooling

Explains forced-air cooling system and airflow requirements.

3.4. Operating Voltage

Details power supply voltage range and universal operation.

3. Installation

3.5. Grounding

Explains Iso-Float ground isolation and earthing importance.

4. Product Overview

4.1. Front Panel Overview

Details front panel components, controls, and indicators.

4. Product Overview

4.1. Front Panel Overview (continued)

Explains function buttons, rotary encoder, and status LEDs.

4. Product Overview

4.2. Rear panel

Describes input and output connectors, binding posts, and speakON connectors.

4. Product Overview

4.2. Rear panel (continued)

Details Ethernet and mains power connectors.

5. Operation and Performance

5.1. Operation Precautions

Advises on safe practices before connecting or powering on.

5.2. Power Output Performance

Describes the output power capabilities of different models.

5.2.1. Symmetrical Power

Provides power ratings for various load impedances.

5.2.2. Rational Power Management™

Explains flexible power allocation across channels.

5. Operation and Performance

5.2.2. Rational Power Management™ (continued)

Details Auto RPM and Custom RPM modes for power allocation.

5. Operation and Performance

5.3. Amplifier and Load Protection Systems

Outlines protection circuits and their indications.

5.3.1. Inter-Sample Voltage Peak Limiter (ISVPL)

Explains ISVPL operation for seamless signal limiting.

5.3.1.1. Low Distortion Profiles

Describes Universal and Sub/LF profiles for low distortion.

5.3.1.2. High SPL Profiles

Describes Sub, LF, MF, HF profiles for high SPL.

5. Operation and Performance

5.3.2. Current Peak Limiter (CPL)

Explains CPL for preventing damage by limiting output current.

5. Operation and Performance

5.3.3. Power Average Limiter (PAL)

Describes PAL warning and its effect on gain limiting.

5.3.4. Breaker Emulation Limiter (BEL™)

Explains BEL for modelling thermal behavior of external breakers.

5.3.5. Under Voltage Limiter (UVL™)

Describes UVL for reducing mains current during voltage drops.

5. Operation and Performance

5.3.6. Current Average Limiter (CAL™)

Explains CAL for monitoring RMS current to prevent overloading.

5.3.7. Voltage Clip Limiter (VCL)

Describes VCL for preventing clipping when PSU regulation is exceeded.

5.3.8. Temperature Protection

Details the temperature sensing system for preventing overheating.

5.3.8.2. Power Output Channels

Describes how temperature warnings/faults are indicated for output channels.

5. Operation and Performance

5.3.8.3. Power Supply/DSP

Describes indications for PSU or DSP temperature warnings/faults.

5.3.9. DC Protection

Explains DC protection to prevent damage to loudspeakers or components.

5.3.10. VHF Protection

Details VHF detection and protection to prevent HF driver damage.

5. Operation and Performance

5.3.10. VHF Protection (continued)

Illustrates VHF protection frequency sensitivity and attack time.

5.3.11. Short Circuit Protection

Explains detection and muting for low impedance or short circuit conditions.

5. Operation and Performance

5.3.12. Power Supply Protection

Details internal monitoring and shutdown functions for power supply safety.

5.3.13. Mains Anomaly Protection

Covers over-voltage, under-voltage, instability, and glitch protection.

5.4. Power Supply

Describes the R.SMPS features, universal voltage acceptance, and PFC.

5. Operation and Performance

5.4.1. Low Inrush Current

Explains low inrush current to prevent breaker tripping.

5.5. LoadPilot Load Monitoring

Introduces LoadPilot for monitoring loudspeaker and cable integrity.

5.5.2. Automatic Calibration

Details functional description of automatic calibration for error detection.

5. Operation and Performance

5.5.2.1. Functional Description

Lists applications for automatic calibration like short circuits and missing speakers.

5.5.3. Manual Configuration

Explains manual configuration for custom settings.

5.5.3.1. Functional Description

Addresses issues like high noise levels and cable inductance for manual configuration.

5. Operation and Performance

5.5.4. Indication

Describes LoadPilot fault and warning indications.

6. Signal Flow and Lake® Processing

6.1. Signal Flow

Depicts the audio signal flow through the PLM+ device.

6. Signal Flow and Lake® Processing

6.2. Level Adjustments & Mute Points

Lists stages for level adjustment and muting in the signal chain.

6.2.1. Power Output Section: Limiting and Sensitivity

Explains CPL and ISVPL for output limiting and sensitivity.

6. Signal Flow and Lake® Processing

6.3. Lake Processing and Control

Details integration with Lake Processing for EQ, dynamics, etc.

6.4. Modules and Frames

Explains the concept of Frames and Modules in Lake Processing.

6.4.2. LoadLibrary™ and Fingerprints

Describes LoadLibrary for loudspeaker presets and Fingerprints for load verification.

6. Signal Flow and Lake® Processing

6.5. Loudspeaker Processor Overview

Explains configuring up to four processing Modules and types of crossovers.

6.6. Files and Presets

Describes methods for storing and recalling Module, Frame, or system-wide data.

6.6.1. Module, System and Sub-System Configuration Files

Explains Module, System, and Sub-System configuration file types.

6.6.2. Frame and System Presets

Details storing and recalling Frame Presets and System Presets.

7. Front Panel Interface

7.1. Overview

Provides an overview of the front panel controls and display.

7.1.1. Operating Modes

Describes the two main operating modes: Meter Mode and Menu Mode.

7.1.2. Warning, Fault and Mute Indications

Explains how warnings, faults, and mutes are indicated.

7. Front Panel Interface

7.1.3. Selecting a Module in the Lake Controller software via the Front Panel

Describes identifying modules in Lake Controller using the front panel.

7.2. Front Panel Key Lock

Explains how to lock/unlock front panel controls for security.

7.3. Power Button

Details the function and bi-color indication of the power button.

7. Front Panel Interface

7.4. Mute Enable Button

Explains the MUTE ENABLE function for input/output muting.

7.5. Meter Button

Describes how the METER button scrolls through different meter views.

7.6. Menu Button

Explains how the MENU button selects operating modes and accesses submenus.

7.7. Exit Button

Describes the EXIT button's function for navigating menus.

7. Front Panel Interface

7.8. Dynamic Buttons, Controls and LEDs

Details the dynamic buttons, rotary encoder, and LEDs.

7.8.1. Communication LED

Explains the function of the white Communication LED.

7.8.2. Frame Faults and Warnings LED

Describes how frame faults and warnings are indicated by LEDs.

7. Front Panel Interface

7.8.3. Rotary Encoder

Explains how the rotary encoder is used for parameter adjustment and navigation.

7.8.4. Dynamic Function Buttons

Describes the unlabeled dynamic function buttons and their context-sensitive roles.

7. Front Panel Interface

7.8.4.1. Mute Functions

Lists the four types of mute functions and how to control them.

7.8.4.2. PLM+ Input Router Mute

Explains how to mute/unmute PLM+ inputs via the input router.

7.8.4.3. Module Input Mute

Describes how to mute/unmute audio signals at the module input level.

7. Front Panel Interface

7.8.4.4. Module Output Mute

Explains module output muting and its availability in Menu Mode.

7.8.4.5. Power Channel Mute

Details how power output channels are muted via front panel buttons.

7. Front Panel Interface

7.8.5. LED Fault, Warning and Clip Indication

Summarizes LED indications for faults, warnings, mutes, and clips.

7.8.5.1. Clip Indication

Explains how input and output clipping are indicated by LEDs and LCD.

7. Front Panel Interface

7.8.5.2. Warning or Fault Indications

Describes how warnings and faults are indicated by LEDs and text.

7.9. Warning and Fault Indications

Lists warning conditions signified by yellow LEDs and fault conditions by red LEDs.

7. Front Panel Interface

7.9. Warning and Fault Indications (continued)

Lists fault conditions signified by red LEDs.

7. Front Panel Interface

7.10. Meter Mode

Introduces Meter Mode and its different views.

7.10.1. Home View

Describes the Home View as the default display upon powering on.

7. Front Panel Interface

7.10.1. Home View (continued)

Details information shown in Home View, including module/channel labels and status icons.

7.10.2. Amplifier Meters View

Explains the Amplifier Meters View for signal level information.

7. Front Panel Interface

7.10.2. Amplifier Meters View (continued)

Details voltage, current, power, and gain reduction meters.

7.10.3. Temperature View

Describes the Temperature View for operating temperatures and mains status.

7. Front Panel Interface

7.10.4. Input Meters View

Explains the Input Meters View for inspecting input routers and signal levels.

7.10.5. Module Meters View

Details the Module Meters View for signal level information from module outputs.

7. Front Panel Interface

7.11. Menu Mode

Introduces Menu Mode for accessing functions like gain, delay, and routing.

7. Front Panel Interface

7.11.1.1. Parameters with Individual Values and Group Totals

Explains how parameters display individual and group total values.

7.11.1.2. Menu Structure Overview

Outlines the submenus available from the main menu for configuration.

7. Front Panel Interface

7.11.2. Module Submenu

Details the Module submenu options for adjusting parameters.

7.11.2.1. Input Mixer

Explains how to configure the Input Mixer for different routers and levels.

7. Front Panel Interface

7.11.2.2. Gain

Describes adjusting module input/output gain values.

7.11.2.3 Delay

Explains adjusting delay values for driver or subsystem alignment.

7.11.2.4. Phase (Polarity)

Describes how to adjust phase (polarity) for inputs and outputs.

7. Front Panel Interface

7.11.2.5. Amp Gain

Explains adjusting the gain of the PLM+'s power output stage.

7.11.2.6. Limiters

Details adjusting ISVPL Threshold, Profile, MaxPeak, and MaxRMS parameters.

7. Front Panel Interface

7.11.2.6. Limiters (continued)

Covers MaxRMS Level, Corner, Attack, and Release settings for limiters.

7.11.2.7. Mutes

Explains module input and output mute control via the MUTE menu.

7. Front Panel Interface

7.11.3. I/O Configuration

Provides configuration options for input routing, AES Termination, and Iso-Float.

7.11.3.1. Input Router Configuration

Explains configuring input routers with priority levels and selection modes.

7. Front Panel Interface

7.11.3.1. Input Router Configuration (continued)

Details assignment of input priority and analog input sensitivity/gain offset.

7.11.3.2. AES3 Input Termination

Explains how to set AES3 input termination for proper operation.

7. Front Panel Interface

7.11.3.3. Iso-Float

Describes the Iso-Float setting for analog input electronic balancing.

7.11.3.4. Output Router

Explains module output routing to power outputs or Dante.

7. Front Panel Interface

7.11.4. Attenuation Submenu

Details adjustment of attenuation for power output channels.

7.11.5. Frame Submenu

Provides information and options relating to the physical unit (Frame).

7. Front Panel Interface

7.11.5.1. Frame Info

Displays firmware version, serial number, output voltage, and current.

7.11.5.2. Frame Reset and Configuration

Explains options for factory reset and soft reset of device parameters.

7. Front Panel Interface

7.11.5.3. Breaker Emulation Limiter

Details Ampere selection and breaker type selection for BEL.

7.11.5.4. Network

Shows network configuration information like IP address and connection status.

7.11.5.5. Latency Match

Explains enabling Latency Match to synchronize audio processing delay.

7. Front Panel Interface

7.11.6. Front Panel Display Controls

Details adjusting contrast, dimming, and channel order of the front panel display.

7.11.7. Frame Preset Menu

Describes recalling existing Frame Presets from the device's memory.

7.11.8. Load Monitor Menu (LoadSmart)

Introduces the LoadSmart menu for speaker verification.

7. Front Panel Interface

7.11.8.1. Configure # of Cabinets in Parallel

Allows selection of the number of speaker cabinets connected to each output.

7.11.8.2. LoadSmart Verification

Explains how to initiate LoadSmart verification and view results.

8. Back Panel Interface

8.1. Speaker Outputs

Describes the available binding post or speakON connectors for speaker outputs.

8.1.1. Bridge Mode

Explains bridging power outputs on specific models and required wiring.

8. Back Panel Interface

8.1.2. speakON Connectors

Details the speakON connector configurations for different models.

8. Back Panel Interface

8.1.3. Binding Post Connectors

Describes the binding post connector configuration and wiring methods.

8. Back Panel Interface

8.2. Analog Inputs

Explains the analog input XLR connections and wiring standards.

8.2.2. Analog & AES3 XLR Wiring and Pin Out

Details the XLR wiring and pin-out standard.

8. Back Panel Interface

8.2.3. Unbalanced Operation

Describes wiring inputs for unbalanced output sources.

8.2.4. Iso-Float Electronic Balancing

Explains the Iso-Float system for analog input electronic balancing.

8. Back Panel Interface

8.3. AES3 Digital Inputs

Explains AES3 digital input connectors and signal format.

8.4. RJ45 etherCON Network Connections

Describes the RJ45 etherCON network connections and status LEDs.

8. Back Panel Interface

8.4. RJ45 etherCON Network Connections (continued)

Details RJ45 wiring and pin-out description for network cables.

8.4.1. Primary Network Connection

Explains the use of the primary network connection for control and audio.

8.4.2. Secondary Network Connection

Explains the use of the secondary network connection for redundancy.

8. Back Panel Interface

8.5. Power Inlet

Describes the powerCON connector for AC mains input.

9. Appendix

9.1. Faults and Warnings Overview

Lists frame-related faults and warnings with descriptions and actions.

9. Appendix

9.1. Faults and Warnings Overview (continued)

Lists PSU and Load related warnings and faults with descriptions and actions.

9. Appendix

9.1. Faults and Warnings Overview (continued)

Lists AMP and SIGNAL related warnings, faults, and clips with descriptions and actions.

9. Appendix

9.2. Maintenance

Provides instructions for cleaning dust filters and general device maintenance.

9.3. Factory Default Settings

Lists default settings for modules, inputs, and routers.

9.3.1. Module Defaults

Specifies default parameters for Module Type, Gain, Delay, Polarity, etc.

9. Appendix

9.3.2. Input and Router Defaults

Lists default settings for Autoselect, Input sensitivity, Dante, AES3, Iso-Float, and Routers.

9.3.3. Amplifier and Device Defaults

Specifies default settings for Attenuation, Polarity, Mutes, IP Configuration, etc.

9. Appendix

9.4. Current Draw and Thermal Dissipation Specifications

Provides current draw and thermal dissipation data for PLM 5K44.

9. Appendix

9.4. Current Draw and Thermal Dissipation Specifications (continued)

Provides current draw and thermal dissipation data for PLM 12K44.

9. Appendix

9.4. Current Draw and Thermal Dissipation Specifications (continued)

Provides current draw and thermal dissipation data for PLM 20K44.

9. Appendix

9.5. Glossary of Terms, Acronyms and Abbreviations

Defines terms, acronyms, and abbreviations used in the manual.

9. Appendix

10. Application Guide

10.1. Rack I/O Panels

Discusses using I/O connector panels for fast system connection.

10.2. Gain Structure

Explains gain adjustments at various signal path points for muting and level control.

10.2.1. Input Headroom (Analog Inputs Only)

Advises on setting input headroom for optimal signal level.

10.2.2. Input Mixer

Discusses default and adjustable gains for the input mixer.

10. Application Guide

10.2.3. Module Input Gain

Explains adjusting module input gain for speaker cabinet level matching.

10.2.4. Module Output Gain

Details Factory and User Gain stages for balancing frequency bands.

10.2.5. Attenuator

Describes the attenuator control for power output channels.

10.2.6. Amp Gain

Explains Amp Gain correspondence to traditional processor/amplifier gain.

10.3. Gain / Level Optimization

Discusses optimizing gain for maximum volume capability and SPL.

10.3.1. Maximize Volume Capability

Advises on ensuring signal path headroom to avoid clipping and engage limiters.

10. Application Guide

10.3.2. Minimize Noise

Recommends AES or Dante digital inputs for best volume to noise ratio.

10.3.3. Gain Optimization Examples

Provides examples of performance effects from gain structure changes.

10.3.3.1. Digital Input Gain Structure Examples

Illustrates recommended PLM+ configuration with AES or Dante digital input.

10. Application Guide

10.3.3.1. Digital Input Gain Structure Examples (continued)

Illustrates achieving lowest possible output noise, not recommended configuration.

10.3.3.2. Analog Input Gain Structure Examples

Shows how to minimize noise while limiting SPL and achieving full power.

10. Application Guide

10.3.3.2. Analog Input Gain Structure Examples (continued)

Illustrates moderate noise with extreme SPL achieved via internal compression.

10.4. Speaker Configurations

Discusses parallel and series-parallel speaker wiring and impedance.

10. Application Guide

10.5. Digital Audio Connections

Prefers digital inputs for better quality audio and lower latency.

10.5.1. AES3 Digital Audio

Describes the AES3 digital audio interface standard and its characteristics.

10.5.2. System Latency and Delay Compensation

Addresses latency in digital processing and its impact on audio phasing.

10. Application Guide

10.5.3. Connections and Cabling

Details AES input connectors and interconnection of multiple units.

10.5.3.2. Interconnection of Multiple Units

Explains daisy-chaining AES signals and termination settings.

10.5.3.3. Cable Types and Distance Limitations

Discusses cable requirements and distance limitations for AES3 connections.

10. Application Guide

10.5.4. External Signal Distribution Hardware

Covers distribution amplifiers and passive splitters for AES3 signals.

10.5.5. Additional Reference Material

Points to AES web site for AES/EBU standard information.

10. Application Guide

10.6. Digital Clock Configuration

Explains the configurable digital clocking system for sample rates and sync.

10.6.2. Clock Source Priorities

Details options for clock source configuration: Manual or Automatic Detection.

10. Application Guide

10.6.3. Dante Clock Configuration

Explains Dante digital clocking technology and master/slave priority.

11. Technical Specifications

General

Provides general specifications like processing, network, and channel count.

Max. Output Power (all ch.'s driven)

Lists maximum output power across various load impedances.

Max output power single channel

Lists maximum output power for a single channel across various load impedances.

Amplifier output modules (all models, all channels)

Details peak output voltage, current, RPM, and protection features.

Audio Performance (Amplifier platform with digital input)

Lists THD+N, dynamic range, channel separation, and frequency response.

Lake processing

Describes loudspeaker processing, EQ, delay, and limiting features.

Measurement & Analysis

Confirms availability of pilot tone generation, load impedance analysis, and RTA.

Dante Audio Network

Details Dante I/O, network topology, sample rates, and latency.

Device Presets

Mentions local memory locations for product settings.

AES Inputs

Lists supported sample rates and resolution for AES inputs.

Analog Inputs

Details input types, impedance, sampling rate, and THD+N.

Limiters

Lists adjustable ISVPL, CAL, LimiterMax, MaxRMS, and MaxPeak settings.

11. Technical Specifications

Amplifier gain

Specifies amplifier gain range and digital attenuator range.

Rear-panel interface

Lists details of analog/AES inputs, output connectors, and network interfaces.

Front-panel interface

Details display type, indicators, buttons, and encoder.

Mains power

Specifies nominal and operating voltages, and mains wall plug types.

Power supply features

Lists soft start, PFC, R.SMPS, BEL, PAL, UVL, and overvoltage protection.

Dimensions

Provides rack rail to rear panel and overall depth dimensions.

Weight

Lists the weight of the different models.

Finish

Describes the chassis and front panel finish.

Approvals

Lists safety and regulatory approvals.

12. Warranty and Support

12.1. General

Outlines general warranty terms, exclusions, and limitations.

International Warranties

Advises contacting suppliers for international warranty information.

12.2. Technical Assistance and Service

Provides information on obtaining technical assistance and service.

12.2.1. International Service

Guides on contacting dealers or distributors for repair services.

12. Warranty and Support

12.3.2. Factory Service

Details the process for returning a product for factory service.

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