Abbingdon Music Research LS-77 owner manual

Models: LS-77

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D.3 - Testing and Troubleshooting the AMR Active System

Please use the AMR Test & Burn In CD's channel identification track to verify that your system’s channel assignment is correct.

If the low frequency channels have been mixed up the channel identification sequence will have the high frequencies coming from one channel with the low frequencies from the other. In this case please switch around the interconnects or speaker cables (one OR the other, not both) for the power amplifier. Please power down the all amplifier(s) before breaking and re-making connections.

If the sound lacks severely in high or low frequencies and either high or low frequency driver remain silent, please check all connections between speaker, amplifiers and CCE again and compare to these notes and the included drawings.

Play some music with a large amount of high frequency and low frequency content. If the high and low frequencies appear rolled off, please check that the speaker cable connectors labeled CCE are attached to the AM-77 CCE and that the speaker cable connectors labeled AM-77 are attached to the AM-77(s) configured as power amplifier(s).

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Abbingdon Music Research LS-77 owner manual