Page 232 of the PA500 manual describes how to hook up a MIDI accordion.
PA500 Manual Duane
Edited by Duane O (04/26/12 09:28 AM)
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Korg PA4x76, Yamaha CP-70 Electric Grand Piano, Zoom L20 mixer/recorder, Turbosound ip500 column speaker system, Zoom B1 FOUR Bass Multi-Effects Processor