Whoa!!,
Sorry I just dug this out of my e-mail box.
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Hi, fellow x-66 owner.

I found your question on the Internet on a discussion forum.

If you live in europe and have 230 V 50 cycle AC the organ will be out of tune because the electric motor on the 12 tone tonewheel generator is running at the wrong speed. The Hammond X-66 is about the most beautiful sounding hammond organ ever made.

TO make it run in tune it must have 120 volt 60 cycle current.

If there are other problems and you are trying to fix it I will gladly try to talk you through the process via e-mail.

Jooles,
If you are keen to contact this guy, sent me an e-mail and I'll give you his e-mail address. [Linked Image]