OK, this is probably covered elsewhere, but searching "step up transformer" takes me to threads talking about MM/MC conversions.

I'm considering buying a 220V only turntable from a guy in Germany. He says all I need is a step up transformer, but I'm not so sure. What about the AC frequency difference? I think they are 50, and we are 60Hz, is there a transformer that also converts this?

Thanks in advance, please forgive my ignorance on such a simple thing.

Matt

I answered this question at length before, but not sure where the thread is now... You are correct that a transformer will not change the frequency, only the voltage. There is no practical way to change frequency.

Most "international" turntables which have belt drives use a dual-diameter spindle. [I am referring here to the spindle from the motor that drives the belt, NOT the spindle that goes through the hole in the record.] Just adjust and put the belt over the correct diameter section of the spindle, and you'll have no trouble.

If the turntable is rim drive or is belt drive but doesn't have that dual-diameter spindle, then you might have to get (or have machined) a suitable-diameter replacement spindle. Not difficult, but one more thing to do before you can :music: .

If the TT is servo-controlled, then it gets more complicated. Some such turntables have an internal switch or adjustment that allows them to be set (electronically) for either 50hz or 60hz operation. Some will automatically adjust. With some, however, you are stuck, unless you live where the house current matches the frequency of the TT.

If the TT is quartz-locked, then it shouldn't matter; the speed is based on the frequency of the quartz crystal, not on the line current frequency.

The best thing is to ask the seller to look carefully at the label(s) on the back of the TT, and see if it says anything like "50-60 Hz" If it indicates both frequencies, then you'll be fine. If it only lists one frequency, then see the above; you might have to get a new spindle, or pass on this one. If there is no indication on the back label, ask the seller to lift up the mat and/or platter and look for a label and/or switch underneath it.

From my experience, most Japanese TTs sold in Europe are dual-frequency, but some Japanese domestic-market ones may not be. Some German-made ones may not be, but both Duals I've had (still have one) have been fine with either frequency.

MOST TTs can easily cross borders with no more than a transformer, but a FEW will be problematic. Hope the above is clear enough to help you find out which category your target one is in.

I had exactly the same question less than a year ago... amazing what you can learn hanging around here. :thmbsp: :D

Thanks for such a quick response, Arkay! I should have specified that it is a Dual CS 731 Q, meaning Quartz locked I am guessing (I have the specs here somewhere, back in a moment).

Here is the best set of specs i found on it so far: http://dual-reference.com/tables/CS731Q.htm

It says "Speed Control: Quartz Exact, illuminated strobescope with automatic frequency switchover for 33 and 45 RPM."

I know it is a very fine turntable, big brother to the CS 626 I bought new and used for many years, no problems.