I'm a part of a small (currently 11 members) audio club centered on the west side. We're box speakers, servers, and turntables with systems ranging from maybe $1,000 to $50,000.
Southeast Michigan Audio Club (SMAC) is huge with normally 25 attending each meeting, am planning on attending my first meeting this Saturday.
Audio Karma is another huge group centered in Detroit.
When you get more posts (something like 3 - 5) under your belt we can private message more info back and forth if you're interested.