Why is my No. 536 is exhibiting one of the following behaviors: -Audible buzz from speaker that is connected. -Reduced audio output level. -No audio output. -Combined signals from two different sources.

Why is my No. 536 is exhibiting one of the following behaviors: -Audible buzz from speaker that is connected. -Reduced audio output level. -No audio output. -Combined signals from two different sources.

This can be caused by the “input switch” on the unit’s rear panel not being fully engaged in the proper position; make sure that the “input switch” is fully engaged in the proper position (RCA or XLR). Also, make sure that only one input connector is used at a time, i.e., only the RCA or the XLR. They should not be used simultaneously. Explanation: The “input switch” is actually a ground switch, not an input selection switch. By using the switch only to change the ground connection, the signal connections never have to pass through a set of switch contacts. This allows for superior audio performance and enhanced long-term reliability.
Applies to:

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