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Hello,

I have watched and followed the Presonus videos on setting up a stage box with SL III mixer. I have set AVB sends 41 thru 46 for set to Mixes 1-6 and AVB sends 47 and 48 set to Main L and R per the Presonus video.

https://www.youtube.com/watch?v=07Vp68rprBA

I thought this would route the main output of the Mixer to channels 7 and 8 on the stage box. When I plug output 7 on the stage box to a powered speaker, it makes a very loud sound. I thought I would hear a mirror image of my main outputs. But I'm not, it might be feed back I have to disconnect as fast as possible.

Any advice on what I'm doing wrong? How do I send my Main mix to the channels 7 and 8 of the stage box?

Thanks
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by SwitchBack on Tue Jul 05, 2022 2:14 pm
What can I say... The video is clear and still correct so following it to a T should give you main out on NSB outputs 7 and 8. Are you maybe creating a feedback loop? (an open mic picking up sound from your main speakers). Set the main output fader on the mixer to minimum and try again :)

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