JBL LSR4326P - Manual (Page 30)

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Following are step-by-step instructions for performing an RMC calibration:
1. Make sure all LSR4300 monitors are positioned as intended.
2. Using the mic clip, attach the provided calibration microphone to a mic stand and place
the mic at the mix position, oriented vertically, at ear level. Be sure that it is no closer
than 1.5 feet (.46 meters) from the nearest speaker.
Position the calibration microphone vertically
3. Connect the microphone to the Left speaker’s rear panel RMC MIC input.

To perform RMC, the calibration microphone must be connected to the speaker
designated as “Left” (LEFT DIP switch up).
4. Press and hold the RMC button on any speaker for at least 3 seconds (until the RMC light
on the front panel of all speakers begins blinking), then walk to a spot in the room where
you are not blocking the path between the microphone and any speaker.
Reference - Performing An RMC Calibration