Abbingdon Music Research
LS-77
owner manual
Troubleshooting
Specifications
Connecting the loudspeakers
Maintenance
Multi-channel set up
HF Level Placement Suggestions
Precautions
Power rating
LS- 77 Technical Features
Using Binding Posts
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Contents
LS-77 Reference Class Professional Monitor Loudspeakers
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Precautions
Running-In
Contents
Page
Unpacking
Front Panel of the LS-77
Please check that all contents are present
Component Overview
LS-77 Front Fascia
Contact with the chassis
Using AMRs OptiLink Speakon Cable
Setup
Connecting the loudspeakers
Speaker R Speaker L
Using Binding Posts
Speaker Cable Stereo Amplifier Interconnect Cable
Choice of loudspeaker cable
Connecting the amplifier
Multi-channel set up
Distance between the loudspeakers
Positioning
Symmetry and room modes
Distance to the loudspeakers
Distance to back and side walls
Levelling/Speaker Support
Loudspeaker Toe-in
Room and furniture influence
Running-in the loudspeakers
Care and maintenance
Care & Maintainance
Power rating
LS- 77 Technical Features
Troubleshooting
Troubleshooting Guide
Specifications
Specifications Table
Appendix a Adjustment of tonal balan ce
HF Level Placement Suggestions
HF Level R1 Placement
Appendix B Abbingdon Acoustic Setup Regime
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~100″/254cm ~115 ″/290cm
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Appendix C Biamplifying the LS-77
LS-77 Speaker R Speaker L
Speaker Cable
Appendix D The AMR Active System
AM-77 Control Center Edition CCE
Setting up the AMR Active System
Line Level Connection
Speaker Connection
Scenario
Testing and Troubleshooting the AMR Active System
AMR Active System Configuration Diagram
LS-77 Speaker L
Appendix E LS-77 in OptiArray configurations
Introducing AMRs OptiArray scalable acoustic system
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AMR recommends the following OptiArray Setups
Epsilon/Zeta Iota/Zappa Omicron/Sigma
Epsilon/Zeta System wiring
Good acoustics
Appendix G Acoustics Background In formation
Acoustics
Reverberation time
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Absorbers
Diffusers
Absorption or Diffusion ?
Membrane absorbers
Standing Waves
Porous absorbers
Room modes
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