Question about Behringer Audio Players & Recorders
Behringer SL 3242 PRO, about three years old and installed in a church. Mixer has a noise problem that comes from the channels. Each channel turned on increases the noise level. Some more then others. Turning on the phantom power makes a large increase in noise. This noise is present with nothing attached to the mixer and can be heard in the headphones even with the main output muted. The noise level has been increasing for the last few months. I wish I could find a service manual.
It sounds like you have ground loops. This is noise generated by having interconnected equipment grounded at different physical locations. Especially a problem if you have a cable from your cable TV provider connected into your equipment.
Remove EVERY connection into and out of the mixer. Plug in headphones. Noise? If so, mixer needs repair. If not, re-connect equipment 1 piece at a time and assess for noise. If it slowly increases as you add connections you will need expert on-site help to fix it. If it is sudden, what was just connected is the source and steps need to be taken to lift the ground on the connection to that equipment.
Posted on Apr 21, 2009
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Posted on Jan 02, 2017
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