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Symptom | Likely Cause | What to do |
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Hum or Buzz that increases or | Improper A/C ground or faulty | Disconnect or mute channels one |
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decreases when the mixer level | equipment connected to mixer | at a time to isolate the problem. |
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controls are moved. | input. | Refer to the Owner’s Manual of |
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| the faulty equipment for |
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| troubleshooting help. |
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| Faulty cable between source | Substitute a |
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| equipment and mixer. | for the suspected faulty cable. |
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Hum or Buzz. | Improper A/C grounding, ground | Connect all speakers to a |
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| loops. | common power circuit. |
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| “Telescope” the audio ground by |
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| using an XLR/F to XLR/M |
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| adapter with Pin 1 disconnected. |
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| AC power and lighting cables. |
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| Excessively long unbalanced | Use the balanced outputs (if |
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| cable run. | available) of your mixer or source |
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| equipment to drive your EON |
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| speakers. |
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| Use a “DI” (direct injection) box |
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| to convert your unbalanced |
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| equipment output to a balanced |
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| output. |
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| Improper system gain structure. | Reduce the INPUT 1, LINE 2, |
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| and LINE 3 controls and increase |
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| the output level of your source |
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| devices. |
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The inputs from INPUT 2 & 3 | MIX/LOOP SWITCH set | Set the MIX/LOOP SWITCH to |
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aren’t coming out of the | improperly. | the MIX OUT position |
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OUT connector. |
| (depressed). See the CAUTION |
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| in the “Switches” section of this |
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| manual. |
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The speaker connected to the | MIX/LOOP SWITCH set | Disengage the MIX OUT switch. |
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OUT connector goes up and | improperly. | See the CAUTION in the |
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down in volume when I adjust |
| “Switches” section of this |
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the INPUT 1 control on the 1st |
| manual. |
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speaker. |
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Speakers feedback and howl | Microphones are pointed into the | Move the speakers so they do not |
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when the microphone volume is | speakers. | point into the microphone’s pick- |
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turned up. |
| up pattern. See the section on |
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| “Loudspeaker Placement and |
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| Mounting” on page 20. |
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| Equalizer settings are incorrect. | Locate the feedback frequency |
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| and reduce it using the mixer EQ |
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| or an external equalizer. |
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| Excessive gain. | Reduce the gain at the mixer and |
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| move the microphone closer to |
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| the sound source. |
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