differential inputs

Discussion in 'Mixing & Song Critique' started by jonyoung, Feb 5, 2004.

  1. jonyoung

    jonyoung Well-Known Member

    Joined:
    Dec 31, 2003
    Hi All, I recently had an old FurmanPQ6 parametric modded from unbalanced to balanced. When I attempt to use it via a channel insert, I can see signal getting to the unit via the overload LED at the input level pot, but I can't get return signal to the channel. If I return signal to another channel by way of individual patch cords rather than send/return type, I get signal, but not much. The schematic shows it to be a differential input, ground to pin 1, neg to pin2 and pos to pin 3 on input. Lines 2&3 in turn feed a TLO 76 opamp. Any help much appreciated.
     
  2. jonyoung

    jonyoung Well-Known Member

    Joined:
    Dec 31, 2003
    Oops, apologies to the moderators, I just found an earlier post I made moved to Tech talk (I was headscratching for a minute, thought my computer was playing tricks on me!).
     
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