Most the of problems we initially have with bad sound often come from the volume levels of the computers attached to the IS. The document camera is automatically set at 50% volume. The computers also have their own volume controls, but these are more often manipulated by teachers during normal use. Volume that is set to 100% on the computer will often sound 'too loud' or 'crackly' even when the IS audio is set low.
Manage your volume by keeping the volume on the computers set to 50-60% volume. Leave them there and, when connected to the IS, don't adjust the volume through the computer, but only use the WACI pad volume controls.
In these examples, both Mac and pc audio levels are set to 50-60%.
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