jacko Posted June 9, 2022 Share Posted June 9, 2022 Just wondering if anyone here is using Mackie SRM450's for their PA. I've just noticed a very faint hiss along with a high pitched pulsing sound from the horn - only about 3 years old and not pushed too hard. I've always thought it was something wrong with the desk but I get it when nothing's plugged in apart from the kettle lead. I've tried different parts of the house and the garage and it's the same wherever they're plugged in It's not very noticeable and certainly wouldn't be heard at a gig but it's not something I'd expect from Mackies. Quite likely a standard sound as both speakers are doing it. Graeme Quote Link to comment Share on other sites More sharing options...
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