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L-Acoustics MTD Series User Manual

L-Acoustics MTD Series
69 pages
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Version 1.2
December 2004
L-ACOUSTICS MTD LINE
MTD108a, MTD112b, MTD115b
OPERATOR MANUAL

Table of Contents

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L-Acoustics MTD Series Specifications

General IconGeneral
BrandL-Acoustics
ModelMTD Series
CategorySpeakers
LanguageEnglish

Summary

FOREWORD

MANUAL ORGANIZATION

Overview of the manual's structure and chapter contents.

INTRODUCTION

THE MTD SYSTEM

MTD SYSTEM COMPONENTS

Details the loudspeaker and subwoofer enclosures within the MTD system.

MTD OVERVIEW

Provides a comprehensive overview of the MTD line of enclosures and their features.

MTD108a SPECIFICATIONS

Technical specifications for the MTD108a coaxial loudspeaker.

MTD112b SPECIFICATIONS

Technical specifications for the MTD112b coaxial loudspeaker.

MTD115b SPECIFICATIONS

Technical specifications for the MTD115b coaxial loudspeaker.

POWERING MTD

GAIN STRUCTURE

Explains amplifier gain structure and its impact on LLC controllers and system protection.

LIMITERS

Specifies requirements for amplifier peak limiters for safe operation.

COOLING

Recommends temperature speed-controlled fans for amplifiers.

POWERING MTD108a

Details power amplifier specifications and settings for the MTD108a.

POWERING MTD112b

Details power amplifier specifications and settings for the MTD112b.

POWERING MTD115b (PASSIVE MODE)

Details power amplifier specifications for MTD115b in passive mode.

POWERING MTD115b (ACTIVE MODE)

Details power amplifier specifications for MTD115b in active mode.

CONNECTORS AND CABLES

Information on Speakon connectors and recommended cable specifications for optimal performance.

PROCESSING MTD

L-ACOUSTICS MTD108 LLCa DESCRIPTION

Describes the functions and settings of the MTD108LLCa line level controller.

L-ACOUSTICS LLC 112b-ST DESCRIPTION

Details the functions and modes of the LLC112b-st stereo line level controller.

L-ACOUSTICS LLC 115b-st, LLC115b-2w DESCRIPTION

Describes the LLC115b-st and LLC115b-2w controllers for MTD115b systems.

MTD CONFIGURATIONS

MTD108a FLOOR MONITOR SYSTEM

Illustrates the block diagram and cabling for an MTD108a floor monitor system.

MTD108a FOH SYSTEM (MONO SUBS)

Shows block diagram and cabling for MTD108a FOH system with mono subwoofers.

MTD108a FOH SYSTEM (STEREO SUBS)

Illustrates MTD108a FOH system block diagram and cabling with stereo subwoofers.

MTD112b FLOOR MONITOR SYSTEM

Details the MTD112b floor monitor system block diagram and cabling.

MTD112b FOH SYSTEM (MONO SUB)

Shows MTD112b FOH system block diagram and cabling with mono subwoofers.

MTD112b FOH SYSTEM (STEREO SUBS)

Illustrates MTD112b FOH system block diagram and cabling with stereo subwoofers.

MTD115b (PASSIVE) FLOOR MONITOR SYSTEM

Details the MTD115b passive floor monitor system block diagram and cabling.

MTD115b (PASSIVE) FOH SYSTEM (MONO SUB)

Shows MTD115b passive FOH system block diagram and cabling with mono subwoofers.

MTD115b (PASSIVE) FOH SYSTEM (STEREO SUBS)

Illustrates MTD115b passive FOH system block diagram and cabling with stereo subwoofers.

MTD115b (ACTIVE) FLOOR MONITOR SYSTEM

Details the MTD115b active floor monitor system block diagram and cabling.

MTD115b (ACTIVE) FOH SYSTEM (STEREO SB118 SUBS)

Shows MTD115b active FOH system block diagram and cabling with stereo SB118 subwoofers.

MTD115b (ACTIVE) FOH SYSTEM (STEREO SB218 SUBS)

Illustrates MTD115b active FOH system block diagram and cabling with stereo SB218 subwoofers.

SOUND DESIGN

APPLICATIONS

Discusses various applications and design considerations for MTD enclosures.

AIMING MTD ENCLOSURES

Provides guidance on aiming MTD enclosures for optimal audience coverage.

ARRAYING MTD ENCLOSURES

Explains principles and effects of arraying MTD enclosures for coverage and interference.

PREDICTING MTD COVERAGE

Details how to predict MTD enclosure coverage using modeling software.

DISTRIBUTED SOUND REINFORCEMENT

Discusses methods for achieving even SPL coverage and frequency response.

FRONT-OF-HOUSE (FOH) APPLICATIONS

Explains using MTD enclosures for standalone FOH applications with LLC processing.

STAGE MONITORING

FLOOR MONITORING

Details using MTDs for floor monitoring applications and optimal setup.

USING MTD WITH SUBWOOFERS

SIDE FILL OR DRUM FILL MONITORING

Discusses using MTDs with subwoofers for side/drum fill monitoring.

COMBINING MTD WITH SUBWOOFERS

Explains how to combine MTDs with subwoofers, covering modes and configurations.

GROUND STACKED SYSTEMS

Covers setup and time alignment for ground stacked MTD and subwoofer systems.

SEPARATE FLOWN MTD WITH GROUND STACKED SUBWOOFERS

Details time alignment for flown MTD systems with ground stacked subwoofers.

INSTALLATION PROCEDURES

ETR8 U-BRACKET ATTACHMENT(MTD108a)

Step-by-step guide for attaching the ETR8 U-bracket to the MTD108a.

ETRI, ETR2 U-BRACKET ATTACHMENT (MTD112b, MTD115b)

Instructions for attaching ETRI and ETR2 U-brackets to MTD112b and MTD115b.

OMNIMOUNT ATTACHMENT (MTD112b, MTD115b)

Details the procedure for Omnimount attachment on MTD112b and MTD115b.

SAFETY RULES

Essential safety rules and recommendations for system installation and rigging.

MTD SYSTEM OPERATION

RECOMMENDED MAINTENANCE PROCEDURES

Details recommended maintenance procedures for MTD enclosures, including diaphragm replacement.

LF SERVICE

Information on servicing LF components and coaxial assemblies.

POLARITY CHECK

Emphasizes checking wiring polarity after component replacement.

PERIODIC CHECK

Recommends periodic checks for frequency response and mechanical integrity.

SPARE PARTS

Lists available spare parts for MTD108a, MTD112b, and MTD115b.

SPECIFICATIONS

MTD108a SPECIFICATIONS

Provides comprehensive technical specifications for the MTD108a enclosure.

MTD108LLCa SPECIFICATIONS

Technical specifications for the MTD108LLCa analog line level controller.

MTD112b SPECIFICATIONS

Technical specifications for the MTD112b coaxial loudspeaker.

LLC112b-st SPECIFICATIONS

Technical specifications for the LLC112b-st stereo line level controller.

MTD115b SPECIFICATIONS

Technical specifications for the MTD115b coaxial loudspeaker.

LLC115b-st, LLC115b-2w SPECIFICATIONS

Technical specifications for the LLC115b-st and LLC115b-2w controllers.

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