Abbingdon Music Research owner manual LS-77 Speaker R Speaker L

Page 34

LS-77	LS-77
Speaker R	Speaker L

		LS-77 Professional Monitor
		Designed and Engineered in Great Britain
Sensitivity:	87dB
Impedance:	8Ohms
Cont. Power Handing:	150W
Peak Prog. Handing:	600W
Frequency Response:	27Hz-40kHz	High Frequency

Level Adjustment

HF

LF

INOUT

Speaker Cable

LF

Mono BiAmplifier

Interconnect Cable

		LS-77 Professional Monitor
		Designed and Engineered in Great Britain
Sensitivity:	87dB
Impedance:	8Ohms
Cont. Power Handing:	150W
Peak Prog. Handing:	600W
Frequency Response:	27Hz-40kHz	High Frequency

Level Adjustment

HF

LF

INOUT

Speaker Cable

HF

LF

HF

Mono BiAmplifier

Interconnect Cable

R	L
Pre-amplifier	Pre-amplifier

Figure C.1 - System connection using Speakon connector equipped speaker cables (AMR AM-77)

i.Connect the respective Speakon connectors of the speaker cables to the LS-77 (left & right).

ii.Connect the respective dual headed end of the speaker with its Speakon connectors of the speaker cables to your amplifier, the connector marked HF connects to the left channel, the connector marked LF connects to the right channel.

34

Image 34

Contents LS-77 Reference Class Professional Monitor Loudspeakers Page Page Precautions Running-InContents Page Unpacking Front Panel of the LS-77Please check that all contents are present Component Overview LS-77 Front FasciaContact 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 the loudspeakers Distance to back and side wallsLevelling/Speaker Support Loudspeaker Toe-in Room and furniture influenceCare & Maintainance Care and maintenanceRunning-in the loudspeakers Power rating LS- 77 Technical Features Troubleshooting Troubleshooting GuideSpecifications Specifications TableAppendix 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 CCESetting up the AMR Active System Line Level ConnectionSpeaker Connection Scenario Testing and Troubleshooting the AMR Active System AMR Active System Configuration Diagram LS-77 Speaker LAppendix 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 absorbersStanding Waves Porous absorbersRoom modes