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Thread: Johannus 1100 as a virtual organ

  1. #1
    Commander, Assistant Conductor
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    Johannus 1100 as a virtual organ

    I have a Johannus 900 which I've successfully converted into a virtual organ. Now I'm trying to do the same with a Johannus 1100, but am running into problems. There seems to be only one midi-channel for both manuals and pedals, whereas there ought to be three midi-channels. Also, there is no midi-signal sent to the computer when I pull a stop on the Johannus console. So I can change stops only with the computer mouse.
    Is there something wrong with the organ? Could it be suffering from frost damage? Or do I just need to press a button or two on the organ to get things working?

  2. #2
    Recruit, Pianissimo DrBen's Avatar
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    Jul 2013
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    Do you have the Opus 1100 (1989) or the 1100N (1991)? Unfortunately, on the nameplate, both are just "1100"; there is no "N".

    I have the 1100N but I think the midi circuitry is similar on both models.

    There are three 5-pin midi connectors: IN -- THRU -- OUT.

    On all three connectors, pins 1, 2, and 3 are NOT used.

    Pin 4 supplies +5VDC.

    Pin 5 is the midi feed.

    If you do not have the schematics (service manual) email aftersales@johannus.com give them your model number and the serial number on the name plate. They will send you a pdf copy of the schematics.

  3. #3
    Commander, Assistant Conductor
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    Thanks ever so much. I'll do just that.

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