Posted by Terry on December 11, 2006 at 13:05:08:
Hello. Anybody using an old Sonus MT-70 Midi Switch & Router? I cant find the right 9v Power Transformer module for this item. I have both positive and negtive 9v power supplies. Can anybody tell me what the polarity requirements are for the power transformer. It is Positive ground or Negative ground. The equipment doesn't show the power plug polarity. Thanks.