The issue I am having with the M4 is a ringing type of quiet feedback. If the unit is cranked with a high gain module the quiet, ringing feedback becomes a screaming feedback. I want to say that there is something loose in the chassis because when, at low volumes when the ringing is barely audible, if you lightly tap the chassis with your finger the ringing becomes more noticeable, similar to tapping a spring reverb unit. Any suggestions would be greatly appreciated.
Also, what if any issues are there with running the M4 with only two or three modules? Should there always be 4 modules installed?
Thanks,
Pete
Also, what if any issues are there with running the M4 with only two or three modules? Should there always be 4 modules installed?
Thanks,
Pete