110V Turntable

[Francois]

I have just bought a Sony PS-4300 turntable, but the owner has it plugged into a NAD amp, all of which are plugged into a 110V transformer.

I am not so worried about the 100V but rather the 60HZ ? Would a normal 220/110 step down transformer still work or are there some modifications ahead ?

I got this link to show a little bit more:

http://www.ebay.com/itm/VINTAGE-Sony-Stereo-TurnTable-Direct-Drive-PS-4300-/250868775664

[Francois]

And as I Google all over I find... Tom!

http://www.avforums.co.za/index.php/topic,11603.0.html   

[Rudi]

Franscois. all our power is 50Hz. unless you can find a way to generate 60Hz (if that is what the deck wants) you are a bit screwed with the speed issue.
but if it uses 50hz. then a normal stepdown will work 100%

[Hi-Phibian]

Direct Drive just about always means DC servo motor of sorts. If so, the the motor speed is NOT governed by the incoming AC frequency at all.

From my SL1200 exploits I would go as far as saying that taking any transformer out of the deck and replacing this with a nice (220V) external one would be a worthwhile exploration.

[Francois]

There I learn something :-) As long as a DC motor gets a stable 12V or more with plenty of current, all is well....

Thanx!

[Hi-Phibian]

For the purpose of your turntable working or not yes but to be pedantic: As long as a DC motor control circuit gets a stable operating voltage with plenty of current, all is well....

[Steerpike]

Since pedantry is creeping in... direct drive turntables don't use DC motors, they use polyphase AC induction motors, supplied with 2 or 3 electronically synthesized AC waveforms at very low frequencies, around 12Hz.
DC motors are commonly found in belt drive turntables - mostly tiny motors (about 3cm in diameter) that run on around 6v, often with a pair of trimpots in the motor or on a PC board to fine tune the speed. (This means all the later belt drives from Technics, Kenwood etc.) These motors are rated at 1 or 2 watts, so the current draw is very low indeed - except for the startup surge.

In both the above types, the AC mains is rectified and put through regulation circuitry, so its magnitude and frequency are largely unimportant (to the point of the regulator failing to be able to work).

[Ampdog]

Francois,

I found a spec for the Sony PS-4300 on the internet, saying that the nameplate shows: 110/120/220/240V, 50-60Hz mains input, power 10W. Unless yours is a different/altered PS-4300, it might mean that an internal adjustment could be possible to accomodate our 230VAC. The 10W requirement is low enough that a small transformer on the unit or even a versatile switching power supply can be on board. Have you investigated? (Tom is possibly still around to help?)

[Family_Dog]

Looking at the ebay pics shows that the unit features a stroboscopic display. As long as the strobe shows  a stationary 50Hz display, you're fine!


-F_D

[Shonver]

I found a spec for the Sony PS-4300 on the internet, saying that the nameplate shows: 110/120/220/240V, 50-60Hz mains input, power 10W.

If input voltage selection is not visible as is, take a look underneath the platter: it is common to find the selector there.

[Francois]

Thank you all for the advice guys (this forum can do with a girl or two ? )!

Now I cant wait to fetch it, quite curious about the table! I will then post a photo or two after investigating

[WaterHond]

Thank you all for the advice guys (this forum can do with a girl or two ? )!

We had a girl here recently - everybody gave her pages and pages of information (with a a bit of flirting) about the best choice of setup for her requirements - she duly went and bought the pretty one...

[Tom]

  We had a girl here recently...When 

Hey Guys, I'm still around. Thanks for all your help, I neglected this section of the forum today - won't happen again, sorry

Francois, some good news, and after opening the plastic containing the manual,  I found the selector switch, she is running on 220 now. it was very well hidden.

Reason with me running it via my NAD's - 110v switched function was:
1. It had that funny flat two pin plug
2. Name plate at back says 110


Even a much more pretty TT now......

Anycase, all's well that ends well, Still interested?

Tom

[Francois]

The payment has been made... Thanx!
See you soon 

[Francois]

Tom, thank you very much! its a beautiful turntable, not a single blemish or scratch, and sounds very nice!

A very very good 2nd table for just listening!