How to Filter Noise in the XLR Connector to RCA Connectors
- 1). Locate the XLR connector and unscrew it from the RCA connector, if connected. Open the bottle of audio connection cleaner, then place some on a Q-tip.
- 2). Hold the connector as you rub the Q-tip around all metal connection ports. Set it aside and wait for the connector to dry.
- 3). Clean the RCA connector by rubbing the Q-tip around the inside of the connector. Dip the end of a pipe cleaner into the audio connection cleaner. Insert the pipe cleaner into the connector and move it back and forth to clean.
- 4). Set aside and wait for the connector to dry. Reconnect the XLR to the RCA connector, then turn the mixing board volume on, if you are using a mixing board. Listen for any hissing or buzzing through the speakers; re-clean if you still hear hissing or buzzing.
Source...