Abbingdon Music Research LS-77 owner manual Setup, Connecting the loudspeakers

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Section 3 - Setup

AMR

recommends the sonically superior S p e a k o n c o n n e c t o r s

3.1 Connecting the loudspeakers

The LS-77 is fitted with shrouded binding posts prepared for bi-wiring that are standard in high end audio. However, we do not normally recommended their use. They are provided to allow users to easily integrate our speakers into an existing system already fitted with cables prepared for such connections.

AMR's preferred connection method is the professional Neutrik Speakon connector. This provides a sonically vastly superior and more reliable method of connection, due to the connector’s gold contacts, gastight construction and special locking, high-pressure contact arrangement.

AMR's own speaker cables are equipped with Speakon connectors, as are AMR's amplifiers thus guaranteeing the highest performance and most reliable method of speaker connection available.

3.1.1 Using AMR's OptiLink Speakon® Cable

When using AMR's Speakon® equipped OptiLink loudspeaker cables, you simply plug the Speakon® connector into the Speakon® socket marked “IN” and then twist the whole connector clockwise to lock the connector. This establishes a full bi-wired connection with the correct polarity and ensures the connection is maximally tight and corrosion free all in one go.

To disconnect the Speakon® cable you need to pull back the latch and twist the connector counterclockwise. Then you can simply pull out the plug.

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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 Using AMRs OptiLink Speakon Cable SetupConnecting the loudspeakers Speaker R Speaker L Using Binding Posts Speaker Cable Stereo Amplifier Interconnect Cable Choice of loudspeaker cable Connecting the amplifierMulti-channel set up Distance between the loudspeakers PositioningSymmetry and room modes Distance to back and side walls Distance to the loudspeakersLevelling/Speaker Support Room and furniture influence Loudspeaker Toe-inRunning-in the loudspeakers Care and maintenanceCare & Maintainance 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