I see: I thought the mics would be mounted inside the bellows. If not then my comment becomes irrevelant.
I'd be surprised that cardioid capsules change anything in feedback prevention.
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Le 2022-06-03 21:36, Casey via groups.io a ¨¦crit?:
Thanks -- are you thinking that there might be some near-DC signal
fluctuation from these pressure changes? At any rate, the capsules
will be on the atmospheric-pressure side of the reeds, not inside the
bellows, so there shouldn't be any significant pressure swings of that
nature, AFAIK.
But I do wonder about cardioid capsules just for the sake of
preventing on-stage feedback...
-c
Maybe you should consider NOT using omnidirectional capsules...
Omnidirectional microphones usually have their back chambers sealed. Your average omnidirectional capsule may have trouble dealing with the constantly changing pressure, in fact alternating between pressure and vacuum inside the accordion...
