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  • DAC-4 Board Allen organs

    Hallo,is a DAC-4 board for Allen organs suitable for MOS-1 and MOS-2 Systems? Or Allen to manufacture Dac-4 boards for MOS-1 System, and separately Dac-4 board for MOS-2 System?

  • #2
    Originally posted by praestant View Post
    Hallo,is a DAC-4 board for Allen organs suitable for MOS-1 and MOS-2 Systems? Or Allen to manufacture Dac-4 boards for MOS-1 System, and separately Dac-4 board for MOS-2 System?
    Praestant,

    Underneath where you log out, you'll find the search tool. If you enter DAC4, you'll find JBird604's previous posts providing exactly the information you need. If I were at home, I could tell you, but I'll visit this thread later tonight and see on the photos of my MOS-2 instrument.

    Michael
    Way too many organs to list, but I do have 5 Allens:
    • MOS-2 Model 505-B / ADC-4300-DK / ADC-5400 / ADC-6000 (Symphony) / ADC-8000DKC
    • Lowrey Heritage (DSO-1)
    • 11 Pump Organs, 1 Pipe Organ & 7 Pianos

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    • #3
      Thanks, Michael, my Allen MOS-1 working with a DAC-4 board. And my Allen dealer mean,my new DAC-4 board is a Dac-4 for MOS-2 Systems. Allen manufacture DAC-4 boards for MOS-1 and MOS-2 Systems? It is true? And a DAC-4(MOS-2) board is compatible with a MOS-1 System? My previous board in my Allen MOS-1 is a DAC-4 board.
      Thanks for help.

      Chris

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      • #4
        Chris,

        The same DAC4 used in MOS-2 organs can be used in MOS-1 organs as well. So if your MOS-1 organ was already equipped with a DAC4, a new DAC4 will work in it just as well.

        There is confusion about compatibility of the various DAC boards -- original DAC, DAC2, DAC3, and DAC4. All of these work the same way and all are interchangeable with some minor changes.

        The DAC3 and DAC4 require a 15 volt power supply, which MOS-1 organs do not normally have. So that supply must be added to use either of these with a MOS organ.

        Also, there are a couple of minor wiring changes that should be made when changing to the DAC4. This involves the swell-to-great coupler. Not vital, but recommended by Allen.

        If your MOS-1 organ already had a DAC4, someone in the past has already modified it and a new DAC4 will work just fine.
        John
        ----------
        *** Please post your questions about technical service or repair matters ON THE FORUM. Do not send your questions to me or another member by private message. Information shared is for the benefit of the entire organ community, but other folks will not be helped by information we exchange in private messages!

        https://www.facebook.com/pages/Birds...97551893588434

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        • #5
          Thank you, John!!!

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