Abbingdon Music Research LS-77 Setting up the AMR Active System, Line Level Connection

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D.2 - Setting up the AMR Active System

Loosely place the speakers and connect the bi-amplification speaker cable supplied to each speaker, using the connector marked "LS-77".

Speakon connectors are first inserted and then rotated clockwise until they lock in place. To remove Speakon connectors you need to pull the metal catch backwards and rotate the connector counter-clockwise to unlock the connector so it can be pulled out. Then route the speaker cables to the location at which the amplifiers will be placed.

Place the amplifiers considering the amount of reach between the two separate Speakon connectors on the amplifier side of the bi-amplification speaker cable.

Place the AM-77 CCE as you would normally place your preamplifier or AM-77 amplifier. Confirm that the AM-77 CCE has been configured as Stereo Pre-Main Amplifier (see page 39 of AM-77 Manual).

Please refer to the connection diagrams overleaf for detailed illustration and note the scenarios presented.

Line Level Connection

Scenario 1:

AM-77 CCE x 1

AM-77 x 1 (the AM-77 must be in Stereo Power Amplifier Mode)

(see page 44 of AM-77 Manual) Option cable Left channel RCA (Blue) Option cable Right channel RCA (Red)

ÆAM-77 Input 1's Left Channel

ÆAM-77 Input 1's Right Channel

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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 Connecting the loudspeakers SetupUsing AMRs OptiLink Speakon Cable Speaker R Speaker L Using Binding Posts Speaker Cable Stereo Amplifier Interconnect Cable Multi-channel set up Connecting the amplifierChoice of loudspeaker cable Symmetry and room modes PositioningDistance between the loudspeakers Distance to back and side walls Distance to the loudspeakersLevelling/Speaker Support Room and furniture influence Loudspeaker Toe-inCare & Maintainance Care and maintenanceRunning-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 Acoustics Appendix G Acoustics Background In formationGood acoustics Reverberation timePage Absorption or Diffusion ? DiffusersAbsorbers Membrane absorbersPorous absorbers Standing WavesRoom modes