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Abbingdon Music Research LS-77 owner manual ~100″/254cm ~115 ″/290cm

Models: LS-77

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Troubleshooting Specification 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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Abbingdon Music Research LS-77 owner manual ~100″/254cm ~115 ″/290cm

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Contents

LS-77 Reference Class Professional Monitor Loudspeakers Page Page 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 Setup Connecting the loudspeakersUsing AMRs OptiLink Speakon Cable Speaker R Speaker L Using Binding Posts Speaker Cable Stereo Amplifier Interconnect Cable Connecting the amplifier Multi-channel set upChoice of loudspeaker cable Positioning Symmetry and room modesDistance between the loudspeakers Distance to the loudspeakers Distance to back and side walls Levelling/Speaker Support Loudspeaker Toe-in Room and furniture influence Care and maintenance Care & MaintainanceRunning-in the loudspeakers 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 Page ~100″/254cm ~115 ″/290cm Page Page 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 systemPage AMR recommends the following OptiArray Setups Epsilon/Zeta Iota/Zappa Omicron/Sigma Epsilon/Zeta System wiring Good acoustics Appendix G Acoustics Background In formationAcoustics Reverberation timePage Absorbers DiffusersAbsorption or Diffusion ? Membrane absorbers Standing Waves Porous absorbers Room modes

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