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MTD Series
Operator's manual
L-Acoustics MTD Series Operator's Manual
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Contents
Table of Contents
Bookmarks
Table of Contents
Foreword
Manual Organization
Table of Contents
List of Figures
List of Tables
Introduction
1 The Mtd System
Mtd System Components
Figure 1: MTD System Components
Figure 2: MTD LLC Controllers
Mtd Overview
Mtd108A SPECIFICATIONS
Figure 3: Mtd108A Passive 2-Way (8" LF + 1" HF) Coaxial Loudspeaker
Mtd112B SPECIFICATIONS
Figure 4: Mtd112B Passive 2-Way (12" LF + 1.4" HF) Coaxial Loudspeaker
Mtd115B SPECIFICATIONS
Figure 5: Mtd115B Active/Passive 2-Way (15" LF + 1.4" HF) Coaxial Loudspeaker
2 Powering Mtd
Figure 6: MLS Switches on the Rear Panel of L-ACOUSTICS La24A, La48A Amplifiers
POWERING Mtd108A
Table 1: Load and Power Ratings for Mtd108A
Table 2: Recommended Power Amplification and MLS Switch Settings for Mtd108A
Table 3: Recommended MLS Switch Settings for Powering Mtd108A
POWERING Mtd112B
Table 4: Load and Power Ratings for Mtd112B
Table 5: Recommended Power Amplification and MLS Switch Settings for Mtd112B
Table 6: Recommended MLS Switch Settings for Powering Mtd112B
POWERING Mtd115B (PASSIVE MODE)
Table 7: Load and Power Ratings for Mtd115B (Passive Mode)
Table 8: Recommended Power Amplification, MLS Switch Settings for Mtd115B (Passive Mode)
Table 9: Recommended MLS Switch Settings for Powering Mtd115B (Passive Mode)
POWERING Mtd115B (ACTIVE MODE)
Table 10: Load and Power Ratings for Mtd115B (Active Mode)
Table 11: Recommended Power Amplification and MLS Switch Settings for Mtd115B Low Section
Table 12: Recommended Power Amplification and MLS Switch Settings for Mtd115B High Section
Table 13: Recommended MLS Switch Settings for Powering Mtd115B (Active Mode)
Table 14: Output Power Ratings and MLS Switch Settings for L-ACOUSTICS Laa Amplifiers
Connectors and Cables
Table 15: Maximum Recommended Length for Damping Factor > 20
3 Processing Mtd
L-ACOUSTICS MTD108 Llca DESCRIPTION
L-ACOUSTICS LLC 112B-St DESCRIPTION
L-ACOUSTICS LLC 115B-St, Llc115B-2W DESCRIPTION
4 Mtd Configurations
Mtd108A FLOOR MONITOR SYSTEM
Figure 7A: Mtd108A Floor Monitor System Block Diagram
Figure 7B: Mtd108A Floor Monitor System Cabling Detail
Mtd108A FOH SYSTEM (MONO SUBS)
Figure 8A: Mtd108A FOH System Block Diagram (Mono Subwoofers)
Figure 8B: Mtd108A FOH System Cabling Detail (Mono Subwoofers)
Mtd108A FOH SYSTEM (STEREO SUBS)
Figure 9A: Mtd108A FOH System Block Diagram (Stereo Subwoofers)
Figure 9B: Mtd108A FOH System Cabling Detail (Stereo Subwoofers)
Mtd112B FLOOR MONITOR SYSTEM
Figure 10A: Mtd112B Floor Monitor System Block Diagram
Figure 10B: Mtd112B Floor Monitor System Cabling Detail
Mtd112B FOH SYSTEM (MONO SUB)
Figure 11A: Mtd112B FOH System Block Diagram (Mono Subwoofers)
Figure 11B: Mtd112B FOH System Cabling Detail (Mono Subwoofers)
Mtd112B FOH SYSTEM (STEREO SUBS)
Figure 12A: Mtd112B FOH System Block Diagram (Stereo Subwoofers)
Figure 12B: Mtd112B FOH System Cabling Detail (Stereo Subwoofers)
Mtd115B (PASSIVE) FLOOR MONITOR SYSTEM
Figure 13A: Mtd115B (Passive) Floor Monitor System Block Diagram
Figure 13B: Mtd115B (Passive) Floor Monitor System Cabling Detail
Mtd115B (PASSIVE) FOH SYSTEM (MONO SUB)
Figure 14A: Mtd115B (Passive) FOH System Block Diagram (Mono Subwoofers)
Figure 14B: Mtd115B (Passive) FOH System Cabling Detail (Mono Subwoofers)
Mtd115B (PASSIVE) FOH SYSTEM (STEREO SUBS)
Figure 15A: Mtd115B (Passive) FOH System Block Diagram (Stereo Subwoofers)
Figure 15B: Mtd112B (Passive) FOH System Cabling Detail (Stereo Subwoofers)
Mtd115B (ACTIVE) FLOOR MONITOR SYSTEM
Figure 16A: Mtd115B (Active) Floor Monitor System Block Diagram
Figure 16B: Mtd115B (Active) Floor Monitor System Cabling Detail
Mtd115B (ACTIVE) FOH SYSTEM (STEREO SB118 SUBS)
Figure 17A: Mtd115B (Active) FOH System Block Diagram (Mono Subwoofers)
Figure 17B: Mtd115B (Active) FOH System Cabling Detail (Mono Subwoofers)
Mtd115B (ACTIVE) FOH SYSTEM (STEREO SB218 SUBS)
Figure 18A: Mtd115B (Active) FOH System Block Diagram (Stereo Subwoofers)
Figure 18B: Mtd112B (Active) FOH System Cabling Detail (Stereo Subwoofers)
5 Sound Design
Applications
Aiming Mtd Enclosures
Arraying Mtd Enclosures
Figure 19: General Guidelines for Aiming MTD Enclosures
Figure 20: SPL Mappings at Octave Band Frequencies for a Single MTD Enclosure
Figure 21: SPL Mappings for Two MTD Enclosures with 0.5 Metre Spacing
Figure 22: SPL Mappings for Two MTD Enclosures with 3 Metre Spacing
Figure 23: General Guidelines for Arraying MTD Enclosures
Figure 24: SPL Mappings for Four MTD Enclosures with 0.5 Metre Spacing
Predicting Mtd Coverage
Distributed Sound Reinforcement
Overhead Distributed Systems
Delay Systems
Complementary Fill
Front-Of-House (Foh) Applications
Stage Monitoring
Table 16: Nominal Floor Monitor Distance (to Performer) and Separation Versus Performer Height
Using Mtd with Subwoofers
Figure 25: L-ACOUSTICS Subwoofer Continuous Unweighted SPL Comparison
Table 17: L-ACOUSTICS Subwoofer Specification Summary
Combining Mtd with Subwoofers
Ground Stacked Systems
Figure 26: Illustration of Subwoofer Time Alignment
Separate Flown Mtd with Ground Stacked Subwoofers
6 Installation Procedures
ETR8 U-BRACKET ATTACHMENT(Mtd108A)
Figure 27: ETR8 U-Bracket Installation Procedure
ETR1, ETR2 U-BRACKET ATTACHMENT (Mtd112B, Mtd115B)
Figure 28: ETR1, ETR2 U-Bracket Installation Procedure
OMNIMOUNT BRACKET ATTACHMENT (Mtd112B, Mtd115B)
Safety Rules
Figure 29: Omnimount Installation Procedure
7 Mtd System Operation
Recommended Maintenance Procedures
Spare Parts
8 Specifications
Mtd108A SPECIFICATIONS
Figure 30: Mtd108A Line Drawing
Figure 31: Mtd108A Plus ETR8 Line Drawings
Mtd108Llca SPECIFICATIONS
Mtd112B SPECIFICATIONS
Figure 32: Mtd112B Line Drawing
Figure 33: Mtd112B Plus ETR1 Line Drawings
Llc112B-St SPECIFICATIONS
Mtd115B SPECIFICATIONS
Figure 34: Mtd115B Line Drawing
Figure 35: Mtd115B Plus ETR2 Line Drawings
Llc115B-St, Llc115B-2W SPECIFICATIONS
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Mtd System Components
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Mtd108A Specifications
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Version 1.2
December 2004
L-ACOUSTICS MTD LINE
MTD108a, MTD112b, MTD115b
OPERATOR MANUAL
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This manual is also suitable for:
Mtd108a
Mtd112b
Mtd115b
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