Hey mate, I was just up in your neck of the woods last week! I drove up to Burlington, NC to meet a friend last Thursday (bypassing Fayetteville, but close enough).
Ah yes, the walls of Jericho. Much different from our "wall of sound" and so far our building's walls are still standing so no worries there. And I have yet to see someone spontaneously combust - that would be scary! I think God is giving everyone all the chances He can before everything is wrapped up (in other words, He's not going around randomly combusting people or causing walls to fall on them).

IIRC, the people Jesus got most upset with were the religious people of his day!
Anyway, Psalm 150:5 says to praise Him with loud and clanging cymbals, so our drummer definitely obliges (so I figure a loud bass amp is also included) and Psalm 144:9 says to praise Him with an instrument of 10 strings. I started on a 4 stringed bass, eventually moved to 5, and now own two 6ers and two 7 string basses - so I'm working my way up.
Here's a short clip from our last concert: