Vocals on my L1 used to be pristine and clear, but now distortion (digital distortion sound) from L1 tower intermittently at the transient point when a person sings. It happens only with vocal signals and not with instruments. All levels are properly set. The "green/red" signal light on the L1 base stays green when distortion sound occurs. Any on else experience this? Any suggestion of what the problems is?
I am using a Bose T8S Tonematch mixing board with very little effect other than a small amount of reverb.
Thanks.