I have a pair of these that go into a core sound batt box. occasionally one of the mics will not be as loud as the other. it might lose as much as 50% of it's sensitivity. this could last for several months and then it is ok. I have tried different batt boxes and recorders with the same result. at some point the sensitivity comes back. any ideas? thank you in advance.
I would contact Len, see if he has had this problem before, I have had my pair for going on 16 years and still flawless. Sounds like could be a connection problem somewhere
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But please let us know what you find out...