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 Post subject: Motor Voltage Question
PostPosted: Feb Thu 22, 2018 9:17 pm 
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I'm beyond the unknown adapter port question. This turntable is in a mid 60's German Imperial console.

The tonearm was broken and I was able to repair that. The turntable will play a 33 LP but when I engage the reject button to drop another album it acts as if the motor doesn't have enough power to operate the transmission. Motor just slows down and stops.

I'm not familiar with European voltages. Below is the label that's under the platter. I don't know if this motor will operate properly on 120Vac. Could this be my problem?

Image

Johnny

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 Post subject: Re: Motor Voltage Question
PostPosted: Feb Thu 22, 2018 9:36 pm 
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Johnny wrote:
I don't know if this motor will operate properly on 120Vac. Could this be my problem?
Hi Johnny,

That motor will not operate properly on any American line voltage.

It needs 240 volts, not 120 volts. All US homes have 240 volts available.

But more importantly, it needs 50Hz line frequency.
The US line frequency is 60Hz, 20% too high.

Voltages can be easily changed with a transformer.
Line frequency cannot be easily changed.

- Leigh

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 Post subject: Re: Motor Voltage Question
PostPosted: Feb Thu 22, 2018 11:23 pm 
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That's what I figured. Thank you Leigh!

Johnny

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 Post subject: Re: Motor Voltage Question
PostPosted: Feb Fri 23, 2018 1:38 am 
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Actually the presence of the 220V "Schuko" power outlet was a clue that this unit was built for 220V/50Hz service.

-David


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 Post subject: Re: Motor Voltage Question
PostPosted: Feb Fri 23, 2018 5:01 pm 
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I'm reading up on the European voltage. Is that 220 volts 50Hz actually DC? If so is this motor polarity sensitive?

Johnny

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 Post subject: Re: Motor Voltage Question
PostPosted: Feb Fri 23, 2018 5:33 pm 
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No, it is 50Hz AC. The current alternates 50 times per second vs. 60 in North America.

-David


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 Post subject: Re: Motor Voltage Question
PostPosted: Feb Sun 25, 2018 3:18 pm 
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Dual turntables had different spindle you could get to correct the speed. So when you said it played 33 did it sound like the speed was correct?
Make sure to look at the specs on the motor


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 Post subject: Re: Motor Voltage Question
PostPosted: Mar Mon 05, 2018 3:10 pm 
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It sounded fine when playing. How does the spindle control speed? Are you talking about the spindle in the center of the platter?

Johnny

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