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American 122A in Europe

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  • American 122A in Europe

    Hi, I need to connect 122A (Hammond Suzuki, 6-pin, 110V, 60Hz) to an European A100 (220V, 50Hz) with 6-pin 122 interface. My voltage is European, 220V/50Hz. I plan to use step-down transformer for the Leslie, but not the frequency converter, because the motors are electronically regulated and not dependent on the mains frequency. Yet again... can I damage the Leslie by running it on 50Hz? And also, do I need to be concerned about the speed switch (standard fast/slow half-moon)? I understand it switches 110V taken from the Leslie and not from the organ (which would be 220V), true? Thanks folks!
    ___________________
    Hammond B3 1958 ebony, Leslie 145, Leslie 122A
    Rhodes 73, Wurlitzer 270
    Nord Electro 5D, Korg SV1

  • #2
    122 switching is neither 110 or 220VAC, it is controlled by DC superimposed on the audio lines. If the kit in the organ is for a 122 it will have the means of putting the DC control signal on the audio lines to engage Chorale, either from B+ provided by a takeoff under the rectifier tube of either the preamp or AO-39 power amp or derived from the B+ fed back from pin 5 on the Leslie. You'll want the stepdown transformer to feed 110V to pins 3 and 4 of the 6-pin socket. I don't *think* the Leslie will mind 50Hz as the motors are electronically controlled but I could be mistaken...might want to contact Hammond Europe to be on the safe side.

    TP
    Todd in Cheesecurdistan - www.blueolives.com
    Some consoles, some Leslies, parts, tubes, etc.

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    • #3
      Should this apply to your model Leslie:

      For 50hz use you may want to swap the pulleys made for 50hz.

      https://trekii.com/products/leslie-s...leys-50hz.html

      Click image for larger version  Name:	lph_50_pulley_1.jpg Views:	0 Size:	10.4 KB ID:	647565
      Last edited by Goff; 01-18-2019, 05:58 AM.

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      • #4
        @BlueOliveB3: Helpful, thanks!
        @Goff: Thanks but no so such pulleys in 122A.
        ___________________
        Hammond B3 1958 ebony, Leslie 145, Leslie 122A
        Rhodes 73, Wurlitzer 270
        Nord Electro 5D, Korg SV1

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        • #5
          On the surface I would think the frequency wouldn't matter. However, there is a circuit in the motor speed controller that uses the AC seemingly as a reference of sorts. I'm interested in the final results. The fast speed is adjustable per rotor so that should be no issue ultimately.

          geo

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