Grateful Dead Music Forum

A place to talk about the music of the Grateful Dead 

Chat about Equipment Info
 #117647  by blurkzzz
 Mon Aug 20, 2012 11:08 am
greetings. i was poking around on archive and listened to some matrix recordings and it reminded me of dan healy of course. can anyone tell me what purpose the microphone mounted on the back of the foh board- it shuttled back and forth- left to right to left? anyone remember that?