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<blockquote data-quote="Lee Douglas" data-source="post: 9857" data-attributes="member: 205"><p>I&#039;ve got a BSS Prosys 8810 in an large multi zone outdoor sporting goods store install the has recently started exhibiting strange behavior.&nbsp; It has a music source, two mic inputs and one phone page input, all analog (no cobra net) that&#039;s output to seven Crown CTS2000 amps.&nbsp; I was called in to diagnose a music drop out issue, which I knew was one of the mic sources ducking the music as it had been programmed to do.&nbsp; Somebody else had gotten into it and started changing things and I had to get it back to square one, which I was able to do with a scene recall and reinitialization of the network music source.&nbsp; Except now when I bring the music source up it starts to cyclically feed back in little spikes which show on the meters in the software as well as on the amps.&nbsp; So I removed all of the mic and phone inputs from the back and muted all of the inputs except the music source.&nbsp; It still does the feed back thing and once I isolated it, when I push the input it goes into what sounds like a steady feed back tone, varying with the virtual fader, but not run away.&nbsp; With no open mics on the system.&nbsp; I can&#039;t think of anyway in programming to feed an output back into an input on the system to cause the loop.&nbsp; I&#039;ll call Crown in the morning and go over it with them, but I&#039;m just thinking out loud and wondering if you gentlemen have an thoughts.&nbsp; Thanks.</p></blockquote><p></p>

[QUOTE="Lee Douglas, post: 9857, member: 205"] I've got a BSS Prosys 8810 in an large multi zone outdoor sporting goods store install the has recently started exhibiting strange behavior. It has a music source, two mic inputs and one phone page input, all analog (no cobra net) that's output to seven Crown CTS2000 amps. I was called in to diagnose a music drop out issue, which I knew was one of the mic sources ducking the music as it had been programmed to do. Somebody else had gotten into it and started changing things and I had to get it back to square one, which I was able to do with a scene recall and reinitialization of the network music source. Except now when I bring the music source up it starts to cyclically feed back in little spikes which show on the meters in the software as well as on the amps. So I removed all of the mic and phone inputs from the back and muted all of the inputs except the music source. It still does the feed back thing and once I isolated it, when I push the input it goes into what sounds like a steady feed back tone, varying with the virtual fader, but not run away. With no open mics on the system. I can't think of anyway in programming to feed an output back into an input on the system to cause the loop. I'll call Crown in the morning and go over it with them, but I'm just thinking out loud and wondering if you gentlemen have an thoughts. Thanks. [/QUOTE]

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