PP,
I ask that you do not provide anything more specific to identify your location or the speaker.
If the discussion is valid, it is valid based on the content not as a backdrop for a BBQ pit.
How different ones use an amplifying sound system to influence little ones in God from within a group setting is an important discussion. The setting is jam-packed with opportunities for one man to influence those who are often weak and impressionable.
One specific name will likely just derail the discussion to a dog-pile with nothing good coming from it.
Oh, by the way PP,
this is only my opinion...