Shure PSM900 Manual page 7

5. Adjust the audio source level so that, for the average input signal level, the top two yellow LEDs flicker and the lower
LEDs are solid.
◦ If the red clip LED illuminates, the inputs are overdriven. Decrease the level using the ▼▲ buttons or change the
input sensitivity to +4 dBu.
◦ If the signal level is too low, change the input sensitivity to –10 dBV
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