[quote name='hubrad' timestamp='1358705984' post='1943720']
Hard to be sure, but I once got that kind of sound coming from my Overwater - one of the really good ones!
I was a bit freaked to start with, but then had a thought as such a problem had never occurred before.. I asked if there was one of those induction loop thingies for hearing aid wearers. Turned out there was, and as soon as that was turned off (not actually needed anyway, they switched it on in that hall as a matter of course) all was fine. Never had a re-occurence.
Does your gear sound as expected again today? If so, I'd suspect the venue!
[/quote]
Ah, the venue did have an induction loop...