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Moving vintage turntable from 120V/60HZ to 230V/50HZ

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Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby lindser » 13 Jan 2018 06:51

Hi all,
Apologies if there's a clear answer out there, but I couldn't find one. I'm considering moving my Electrohome 1210 dual vintage turntable (120V/60Hz) from Canada to Germany (230V/50HZ) but am having a hard time finding a clear answer on whether it's possible to make it work without spending thousands of dollars on a frequency converter.

Any advice? I love my turntable and am hopeful to find a way to get it to Germany!
thanks in advance for any tips!
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby Nadavofi » 13 Jan 2018 11:14

I'm facing the exact same problem with a Denon dp300f. Can anyone recommend a hardware for solving this issue?

Appreciate your Help on this.

Nadav.
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby ponytrekker » 13 Jan 2018 14:40

Try https://www.vinylengine.com/library/dual/1210.shtml and open the second version of the owners manual.
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby vinylrayk » 13 Jan 2018 15:09

According to the German language service manual, the motor is easily switchable to 230V.
But, you will need to change the motor pulley (item #137 in the exploded parts view) from the 60Hz pulley you now have (part #212116) to a 50Hz pulley (part #212115) in order to keep the speed right.

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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby lini » 13 Jan 2018 15:30

Two cases here:

- lindser: You'd need to find the matching motor-pulley version for 50 Hz.

- Nadav: No problem. A priceworthy step-up/-down transformer will do the job.

Generally speaking, the problematic cases always are models with an AC motor that's pretty directly mains-powered (with "pretty directly mains-powered" meaning either directly mains-powered or that the mains voltage is merely down-transformed or reduced via a resistor in series, at which a certain share of the mains voltage is dropped...), so that the motor speed depends on the mains frequency. Such designs will hence require either a matching motor-pulley version or alternatively some form of electronic frequency-generator box.

Whereas the unproblematic cases are DC-based designs - i.e. basically all models that either work with a DC motor anyway or alternatively an AC motor in combination with some form of an electronic frequency generator.

So, if one is confronted with such a problem and not yet aware, how exactly one's turntable actually works, one would ideally first have a look at the service manual and parts list.

For example, in Nadav's case the schematic of the DP-300F shows that the incoming mains power/voltage is immediately rectified to DC after transformation - so it's a DC-based design. And in addition the parts list shows that there are three transformer variants (for 100 V, 115 V and 230 V), according to the schematic all with just a single secondary winding, so that there's no chance for an internal reconfiguration (unlike in case of designs with two secondary windings, that could be either wired in parallel for 230 V or in series for 115 V). So in this case there's no way around a suitable step-up/-down transformer.

Whereas lindser's case is a bit more complicated, as according to the service manual there are at least two motor versions (2- and 4-pole) and also at least two configurations (with/without voltage selector) - so that one would first have to determine, what the particular exemplar actually is equipped with. But I fear that finding a source for the correct 50 Hz pulley variant will be problematic anyway - whereas voltage reconfigration wouldn't be that difficult, even if the particular exemplar isn't equipped with a voltage selector.

Greetings from Munich!

Manfred / lini
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby lindser » 13 Jan 2018 22:27

Thanks all for the suggestions! I have hope! Any tips on where to start searching for pulleys?
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby lini » 14 Jan 2018 15:57

lindser: I've already checked Dualfred's web-site, but unfortunately he doesn't appear to offer either version.

Greetings from Munich!

Manfred / lini
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby KentT » 14 Jan 2018 16:54

Alternative when you get to Europe. Find Dual 1218 on 50 Hertz, adjust voltage to 120 V, use step down transformer, enjoy.
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby lini » 15 Jan 2018 00:06

Kent: Uhm, why should he do that? I mean, I can see the point, that it might make more sense to leave his 1210 in Canada and grab another nice 12xxer over here. But why should he set that to 120 V and run it via step-down transformer? To me that would appear rather superfluous...

Greetings from Munich!

Manfred / lini
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby KentT » 15 Jan 2018 04:53

lini wrote:Kent: Uhm, why should he do that? I mean, I can see the point, that it might make more sense to leave his 1210 in Canada and grab another nice 12xxer over here. But why should he set that to 120 V and run it via step-down transformer? To me that would appear rather superfluous...

Greetings from Munich!

Manfred / lini


Easier for him to get a Dual in Germany on 230/50 and get nicer. Because for him to use his Canadian Dual, he's got to deal with that motor pulley or deal with a means of 60 Hertz. Cheaper likely to find a Dual when he gets there, and get two pulleys if he decides to come back to Canada. You make sense. Get a nicer 12xxer when he gets to Germany ready to run on 230/50. I assumed his Dual was part of an Electrohome compact system or console. And my approach makes sense if there's an amplifier or receiver as part of it. If it's just a Dual changer, then your approach is best.
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby p147 » 15 Jan 2018 10:26

I have just imported a Pioneer turntable from Canada to the Uk, The voltage is not a problem with a step down transformer but the change in 50Hz to 60 Hz may be as it will run slower unless the turntable is a quartz direct drive which mine is and runs superbly with no faults.
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Re: Moving vintage turntable from 120V/60HZ to 230V/50HZ

Postby lini » 15 Jan 2018 13:01

Kent: Oh, I see. Yup, in that case that approach would make sense to me, too. However, I rather assumed lindser's 1210 to just not be installed in an original Dual plinth, but an "importer plinth" instead - because I thought, that he would have mentioned, if it would be integrated in some sort of stereo system...

Greetings from Munich!

Manfred / lini

P.S.: Btw, does time seem to pass very quickly these days for you, too? I mean, not quite a month and we're one year older once again...
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