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[Stix]

Walter – Care to elaborate on that? I know humidity changes have an effect on frequency response in the air – However most speaker (and microphone) resonances and peaks in response that cause primary feedback issues are mechanical/structural in nature and so don’t change with humidity/temperature variations. The change in attenuation through air caused by a change in humidity (over time) will be very minimal as the distance between a speaker and stage mic is normaly only a few meters. I am not aware of having any issues with the original notched frequencies returning. Perhaps we should start a new topic?

Cheers

Richard Howey
Audio Dynamite Ltd
IDR48/IDR16/T112/R72