Step-up transformers for European turntables

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djoy2311
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Step-up transformers for European turntables

Post by djoy2311 » 20 Nov 2019 01:13

Hi folks, I'm thinking of importing a new Dual CS 505-4 for use here in the States. I'll need a step-up transformer to provide the correct voltage. Does anyone have any suggestions for a step-up transformer suitable for using a European turntable here in the States? Thansnk! :) :?:

Alec124c41
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Re: Step-up transformers for European turntables

Post by Alec124c41 » 20 Nov 2019 01:41

Turntables that use synchronous motors are governed by the frequency of the mains supply. Voltage being equalized, a motor that runs at 250 RPM on European 50 cycle current will run at 300 RPM on American 60 cycle current.
Rewiring these to run on 110/120 volts is not usually too hard. However, you also need to find and install a drive pulley/spindle to match the line frequency.
Considering these factors, plus the cost of trans-Atlantic shipping, it might make more sense to buy one in the USA. It is not AFAIK a rare bird.

Cheers,
Alec

djoy2311
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Re: Step-up transformers for European turntables

Post by djoy2311 » 20 Nov 2019 23:16

Thanks Alec! I can't get a brand new 505-4 in the States, I've looked. I would be able to find some kind of used 505. I'm pretty lost as far as your answer! I've been repeatedly told that all I'll need is a step-up transformer and to adjust the speed with the manual pitch control.

Woodbrains
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Re: Step-up transformers for European turntables

Post by Woodbrains » 20 Nov 2019 23:29

djoy2311 wrote: ↑
20 Nov 2019 23:16
Thanks Alec! I can't get a brand new 505-4 in the States, I've looked. I would be able to find some kind of used 505. I'm pretty lost as far as your answer! I've been repeatedly told that all I'll need is a step-up transformer and to adjust the speed with the manual pitch control.
Hello,

You can change the voltage with a transformer to get the motor to work in the USA, but it will run faster than in Europe, so will need a different sizes pulley to turn the platter at the correct speed. If you can't buy this table in the USA, (you know better than I that this is the case) then you probably won't get a suitable pulley, for obvious reasons.

Perhaps see this as an opportunity to explore new brands!

Mike.

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Re: Step-up transformers for European turntables

Post by Bluesnote » 21 Nov 2019 02:06

djoy2311 wrote: ↑
20 Nov 2019 23:16
Thanks Alec! I can't get a brand new 505-4 in the States, I've looked. I would be able to find some kind of used 505. I'm pretty lost as far as your answer! I've been repeatedly told that all I'll need is a step-up transformer and to adjust the speed with the manual pitch control.


There are several ways of giving the same answer. . .

A synchronous motor runs at a set constant speed even under load. Your TT designed to run at 33.3rpm on 50hz will turn at close to 40rpm using 60hz. Pitch control won't be sufficient to rectify.

Chris

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Re: Step-up transformers for European turntables

Post by Copperhead » 21 Nov 2019 02:27

In some cases you can get a new pulley turned fairly easily, with the 505 is going to be quite difficult as the pulley is segmented, this means your only chance is to buy a non working one just for the pulley or look for someone parting decks out.

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Re: Step-up transformers for European turntables

Post by kalaur » 21 Nov 2019 06:53

There is a metric (haha) boatload of good tables available in the states. Seems you're chasing a dragon that may be more work than its worth.

If you are dead set on that exact table, as others have said, you will not only need to deal with the voltage, but also the frequency by sourcing the proper size motor pulley.

djoy2311
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Re: Step-up transformers for European turntables

Post by djoy2311 » 21 Nov 2019 22:52

Thank you all very much for saving me some hassle! My decision has been to get a brand new turntable, and frankly, in terms of what I value, I'm unimpressed with what's available in the States, which I've been keeping track of for years, at least what is budgetable to me. Hence looking at the Duals to come from Germany. But, I have found a couple things, so I will return to those options. Thanks again!

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Re: Step-up transformers for European turntables

Post by Woodbrains » 21 Nov 2019 23:45

djoy2311 wrote: ↑
21 Nov 2019 22:52
Thank you all very much for saving me some hassle! My decision has been to get a brand new turntable, and frankly, in terms of what I value, I'm unimpressed with what's available in the States, which I've been keeping track of for years, at least what is budgetable to me. Hence looking at the Duals to come from Germany. But, I have found a couple things, so I will return to those options. Thanks again!
Hello,

IMO there seems to be a good range of used TT's in the USA that can be had for less money than the equivalent in Europe. I'm sure you could get something equal or better than your Dual for less than making yours work over there. Don't lose heart, new is not necessarily the way to go.

Mike.

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Re: Step-up transformers for European turntables

Post by djoy2311 » 22 Nov 2019 00:24

Thanks Mike. I have had bad luck with several used Turntables through eBay (even though I carefully look at seller feedback) and just sort of ok luck with one I picked up locally. That's why I've been thinking in terms of something new, with a warranty, etc.

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Re: Step-up transformers for European turntables

Post by circularvibes » 22 Nov 2019 00:42

djoy, have you tried asking Vinyl Master to help you find locally sold used turntables? He has helped many others! All you have to do is tell him and us what city you are in or at least a general area of which state. He has quite the eye for good deals and time on his typing fingers.

nat
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Re: Step-up transformers for European turntables

Post by nat » 22 Nov 2019 01:18

Have you checked with Dual about whether the turntable comes with a 60 hz pulley? That used to be standard with all tables imported to the US from Europe and Japan, and it has to crossed Dual's mind that there are consumers in the US.

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Re: Step-up transformers for European turntables

Post by Bluesnote » 22 Nov 2019 01:40

nat wrote: ↑
22 Nov 2019 01:18
Have you checked with Dual about whether the turntable comes with a 60 hz pulley? That used to be standard with all tables imported to the US from Europe and Japan, and it has to crossed Dual's mind that there are consumers in the US.
Good thought =D>

Looks like you can get a 60hz pulley (US version) for the CS 505 (all versions) Duel part #261939
https://www.dualfred.de/Drive/Pulley--I ... 39-en.html

If the TT is already fitted with the 60hz pulley it's good to go with a transformer. . .

Chris

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Re: Step-up transformers for European turntables

Post by sotpal » 22 Nov 2019 06:41

For the shake of the discussion 😊 , the next alternative solution would be to: buy a 110v AC to 12v DC converter, then output that to a 12v DC to 220v/50hz AC inverter and then feed the power to the European dual 505-4 turntable while in the U.S. πŸ™ƒ

The inverter is a bit expensive though... πŸ˜ŠπŸ™ƒ

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Re: Step-up transformers for European turntables

Post by cafe latte » 22 Nov 2019 09:30

sotpal wrote: ↑
22 Nov 2019 06:41
For the shake of the discussion 😊 , the next alternative solution would be to: buy a 110v AC to 12v DC converter, then output that to a 12v DC to 220v/50hz AC inverter and then feed the power to the European dual 505-4 turntable while in the U.S. πŸ™ƒ

The inverter is a bit expensive though... πŸ˜ŠπŸ™ƒ
Inverter for a turntable motor does not cost much as very small. This is advice I normally give. Turntable though may need a new ground as inverter breaks the ground so may get hum without running a new ground.
Chris

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