M1 active issue (high frequency noise)
I use it for 2 years and so far I've been pleased. Now there is a problem with high-frequency sound that is quiet, but always present. Something like cricket. I changed the battery, I tried different amps and DI's but it did not work. Please help me. My warranty is over
It's possible that there is something there that you've never noticed before, it could also be something new. My first recommendation would be to lower the pole pieces, and see what effect that has. If that doesn't change anything, let me know.
Changing the placement of the M1 in the sound-hole may make a difference as well.
thnx Caleb, coz i did like what you said and it worked for me