American 122A in Europe

[b3122]

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!

[BlueOliveB3]

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

[Goff]

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

[b3122]

@BlueOliveB3: Helpful, thanks!
@Goff: Thanks but no so such pulleys in 122A.

[geoelectro]

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