As promised, I just got back from walking down to the Gold Creek church to hear the music for myself at the 0900 service. As a test, I did this without wearing my bilateral hearing aids. With the aids in, I have about a 40% hearing loss; with them out, I have about a 66% hearing loss.
I could hear the music, or more accurately the bass beat, from about 200 yards away. I stood right across the street from the church (about 75 yards from the sanctuary) and the music and bass beat were louder then the infrequent passing car traffic. It was hard to really recognize it much as music, since the thumping of the bass beat predominated.
So it is now clear to me how the local neighbors, especially those with normal hearing, are upset about this. According to a story on the local CBS affiliate, the music is on Sunday mornings, Wednesday evening rehearsals and occasional Friday night concerts.
PS: And oh, before I forget, this is for Fistful: this wayward heathen Methodist did not feel an urge to convert from hearing the music.