Abbingdon Music Research LS-77 owner manual Specifications Table

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Section 8.1 - Specifications

Figure 8.1 - Specifications Table

Sensitivity (2.83V/1m in room):

Long Term Power Handling (AES/RMS): Peak Program Power Handling : Impedance, nominal:

Impedance, minimal:

Frequency Response (in IEC Standard Room): Directivity Index (DI) 500-10KHz:

Low Frequency Driver:

High Frequency Driver:

Bass Enclosure Principle: Weight:

Dimensions (W x H x D) each:

Crossover:

87dB

150W

600W

8Ohm

6Ohm

26Hz - 40kHz (+/-3dB) 6dB (+/-3dB)

243mm/10"Diameter, 100mm/4” Voice Coil 125mm/5" long isoplanar ribbon Transmission Line Reflex Port

Speaker (each): 35 Kg / 73 lbs

Shipped (pair): 100 Kg / 220 lbs

250 x 490 x 300mm / 10 x 19 x 12" AMR OptiSlope® design (60 dB/octave)

Information and specifications subject to change without notice.

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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 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 wallsLevelling/Speaker Support Loudspeaker Toe-in Room and furniture influenceCare and maintenance Care & MaintainanceRunning-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 Appendix G Acoustics Background In formation AcousticsGood acoustics Reverberation timePage Diffusers Absorption or Diffusion ?Absorbers Membrane absorbersStanding Waves Porous absorbersRoom modes