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Mid 20s Kilgen organ restoration

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    davidecasteel well I have always wanted to build my own pipes . So maybe someday we can add a rank!

    Jay999 it looks like they are an add on to the flute rank, so that rank has 97 pipes


      Question about power, in the console there are 2 terminal blocks for input power. One had been labeled "1" and the other "2" by whoever uninstalled it. There is continuity between the two blocks. The Power supply is an Orgelectric 230V single phase with 10-15VDC out at 15amps. The supply is wired to 13VDC. I am assuming that one of the wires goes from the Orgelectric to the console.
      What would the other wire go to or come from?

      Does DC+ or DC- go to the console?

      Will a modern switching power supply with a min of 15 amp rating work?



      • Jay999
        Jay999 commented
        Editing a comment
        Yes, you can obtain a modern 12 - 15 volt power supply from Peterson Electro Musical Products. It is a much smaller device than the older rectifiers, and it also emits a "clean" signal, which is important if you add solid state equipment later. The two input terminals you have found is typical in older consoles. It is used to "fan out" the electrical feed system, so you don't have a huge central feed station where many feed wires have to be ganged closely together.

        It is easy to trace what terminals on those input blocks are positive (+) and negative (--). If you look at your stop switches, there will be a heavy wire that feeds current to all the contacts on one side of the switches. The other side of the stop switches will be individually wired to a pin on the junction board, or wired to one side of the solenoids at the side of the keyboards. That will be your positive (+) connection. Looking back at that big feed wire on the stop switches....trace that connection to your input blocks, and you will obtain which terminal is your positive (+) feed you should connect your new power supply positive (+) feed to.

        Going back to the solenoids on the sides of the keyboards, where you have already found the positive (+) terminals, now trace the other terminal on the solenoid to the other terminal on the feed block. You should get a completed negative (--) circuit.

        Very often, you can get "cross talk" when tracing circuits with a meter. You can be sure you have good continuity by rigging up a large 9 volt lantern battery, with a pizzo tweeter, or a 12 volt light bulb in the test lead circuit. As long as there is no solid state equipment in the console, this is perfectly safe for testing continuity in your console wiring.

      Like all systems that use DC power, there needs to be a Complete circuit to make anything function. Normally in a pipe organ all the wires that go to switches, magnets, and so on are supplied by the Positive + side of the circuit. Once the current has gone though a device that does some function, the other end of the device connected to the Negative - side. Both Positive and Negative leads have to go to the console if there are devices in it . Negative is the return side. Positive is the supply side.

      Think of it like any typical automotive electrical system. Instead of a battery though, you have a rectifier or power supply that converts AC power to DC power. And the organ case / framework and so on does not function as the ground return path as it does in an automotive system - there have to be wires for the return side. Other than that difference they are very similar in the principles of operation.
      Regards, Larry

      At Home : Yamaha Electones : EX-42 ( X 3 !!! ), E-5AR, FX-1 ( X 2 !! ), FX-20, EL-25 ( X 2, 1 chopped, 1 not ). Allen 601D, ADC 6000D. Baldwin 626. Lowrey CH32-1. At Churches I play for : Allen Q325 ( with Vista ), Allen L123 ( with Navigator ). Rodgers 755.


        Both wires from the power supply will go to the console. The positive will be switched in the console to the pipe chests. The chest will have a negative that is tied to all of the chest magnets. When a key is pressed down, a positive voltage will travel to the chest to play the selected pipe. The stop tab will activate the switching coils in the console to pull the long slide bars with the 61 bronze fingers to align with the positive bussbars. You can use a ohm meter connected to all the copper buss bars above the keyboard to see which of the two terminal blocks is the positive. The other terminal block can be checked against the common on the coils.
        I like to use the modern day switching power supply instead of the Orgelectric.. Anstron makes the one that most of us use. You can pick them up of *bay used at a very reasonable price.