Abbingdon Music Research LS-77 owner manual Scenario

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Scenario 2:

AM-77 CCE x 2 (each AM-77 CCE must be in Monoblock mode) AM-77 x 2 (each AM-77 must be in Monoblock Mode)

Left speaker cable connector marked "CCE" Right speaker cable connector marked "CCE" Left speaker cable connector marked “AM-77” Right speaker cable connector marked “AM-77”

ÆAM-77 CCE 's Left Channel Speakon socket

ÆAM-77 CCE 's Right Channel Speakon socket

ÆLeft AM-77's Speakon socket

ÆRight AM-77's Speakon socket

Now attach the input connections from your CD-Source ONLY to the AM-77 CCE. Connect the power cables of all amplifiers and the CD-Player to the power extension strip.

ALL amplifiers and sources must be operated from the same power extension. Failure to do so will lead to earth loops which may cause significant audible hum.

Switch on the CD-Source, followed by the AM-77 CCE and finally the AM-77 Power Amplifier and/or AM-77 Monoblock Power Amplifier.

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Contents LS-77 Reference Class Professional Monitor Loudspeakers Page Page Running-In PrecautionsContents Page Front Panel of the LS-77 UnpackingPlease check that all contents are present LS-77 Front Fascia Component OverviewContact 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 back and side walls Distance to the loudspeakersLevelling/Speaker Support Room and furniture influence Loudspeaker Toe-inCare and maintenance Care & MaintainanceRunning-in the loudspeakers Power rating LS- 77 Technical Features Troubleshooting Guide TroubleshootingSpecifications Table SpecificationsAppendix 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 AM-77 Control Center Edition CCE Appendix D The AMR Active SystemLine Level Connection Setting up the AMR Active SystemSpeaker Connection Scenario Testing and Troubleshooting the AMR Active System LS-77 Speaker L AMR Active System Configuration DiagramIntroducing AMRs OptiArray scalable acoustic system Appendix E LS-77 in OptiArray configurationsPage AMR recommends the following OptiArray Setups Epsilon/Zeta Iota/Zappa Omicron/Sigma Epsilon/Zeta System wiring Reverberation time Appendix G Acoustics Background In formationAcoustics Good acousticsPage Membrane absorbers DiffusersAbsorption or Diffusion ? AbsorbersPorous absorbers Standing WavesRoom modes