60Hertz to 50Hertz, does this effect output???

[scm]

Hi all,

After much research and still with no real answers, I as hoping someone has had experience with stepping down the supply voltage and frequency from 240v 50 Hz to 110v 60hz using a step down TX and if there are any negative effects on the output of the A/V receiver??

As per one of my other threads, I am purchasing a pioneer vsx82txs from the USA for use in Australia, the voltage part would be OK but the frequency part (60Hz to 50Hz) has me stumped, ie will it have a negative effect on the output.

Any feedback would be fantastic.
Thankyou..
Scott

 

[mtrycrafts]

Hi all,

After much research and still with no real answers, I as hoping someone has had experience with stepping down the supply voltage and frequency from 240v 50 Hz to 110v 60hz using a step down TX and if there are any negative effects on the output of the A/V receiver??

As per one of my other threads, I am purchasing a pioneer vsx82txs from the USA for use in Australia, the voltage part would be OK but the frequency part (60Hz to 50Hz) has me stumped, ie will it have a negative effect on the output.

Any feedback would be fantastic.
Thankyou..
Scott

Not to worry about it. That small frequency difference on the power transformer is insignificant.

 

[Haoleb]

For future reference, perhaps you wont have any negative effects on your reciever but keep in mind this is not the case for all electronics.

Some turntables use the 60hz as a reference for their speed, As do some clocks (perhaps older ones mainly) Also keep in mind that because you have just reduced the frequency by 10 hz (more than a "small freq difference") your filter capacitors will have to be able to maintain a steady voltage for a longer period of time before they are refreshed.

While the transformers will work at 50hz the regulation will be a bit higher (worse) and it could also run hotter.

Will it have an effect on the output? Probbably not.

 

[PENG]

Hi all,

After much research and still with no real answers, I as hoping someone has had experience with stepping down the supply voltage and frequency from 240v 50 Hz to 110v 60hz using a step down TX and if there are any negative effects on the output of the A/V receiver??

As per one of my other threads, I am purchasing a pioneer vsx82txs from the USA for use in Australia, the voltage part would be OK but the frequency part (60Hz to 50Hz) has me stumped, ie will it have a negative effect on the output.

Any feedback would be fantastic.
Thankyou..
Scott

You can buy a power supply that converts both voltage and frequency. I thought I provided a link in another link.

If you use a step down transformer only, the amp's P/S would run a little hotter but I agree there won't be much effect on the output.

 

[scm]

Thanks for the reply, much appreciated,

I was thinking it was not going to be too much of a problem, just needed reassurance!
When the supply voltage passes the tx, isn't it converted to DC anyway, so frequency would not be an issue, is that correct?
Scott.

 

[Haoleb]

Once the power is transferred through the transformer, Where it is stepped down in this case to say 60 volts it then goes into a rectifier, Probbably a single unit bridge rectifier in this application where the negative voltage half of the sine wave is flipped over, so that instead of having 60 volts positive then 60 volts negative you get 60 volts positive,and 60 volts positive. But there is still a dip between these peaks that needs to be filled in. This is taken care of by the capacitors in the power supply section. They are called filter capacitors because they filter out the on and off pulses. They charge up when the power is on, and release their energy when its off, so ideally you no longer have voltage humps, instead you have a single ruler straight flat line at 60 volts. this is rarely the case but you get the idea.

Because the amp was most likely designed to operate at 60hz the capacitors would get charged up more often than running off of 50hz, therefore they would have a harder time keeping that ideal ruler flat 60v line, but there would be small dips in between. Depending on the severity this can result in a humm or buzz through the speakers. I doubt that it will happen in your case but i woudnt venture to say it wont.

 

[PENG]

Thanks for the reply, much appreciated,

I was thinking it was not going to be too much of a problem, just needed reassurance!
When the supply voltage passes the tx, isn't it converted to DC anyway, so frequency would not be an issue, is that correct?
Scott.

Not a big issue, but the lower frequency at the same voltage would result in higher currents so the P/S transformer would run a little hotter.

 

[scm]

To peng,
As a matter of interest you don't know the link to the tranny that converts both voltage and frequency do you?
Cheers guys for all your input.
Kind Regards
Scott
from Australia.

 

[PENG]

To peng,
As a matter of interest you don't know the link to the tranny that converts both voltage and frequency do you?
Cheers guys for all your input.
Kind Regards
Scott
from Australia.

http://www.falconups.com/selection-guides/frequency-converter-quick-selection-guide.htm

The spec of the Falconups stuff looks good but it will likely be expensive. I thought I posted one in another thread for a more economic model but I don't have time to find it now. May be you can do a search.

 

[jazzyjez]

I can tell you from my experience that I had practically no problems with my equipment doing this the other way around. I brought all my audio/video stuff from the UK to the US - certainly my trusty old Quad (33/405) pre/power amp had no problems. I did have, as has been mentioned, a problem with my turntable as that was quite old and with a synchronous motor (many/most recent turntables have DC motors). Also, I had a very early Philips CD player that couldn't cope with 60Hz - ah well, had to scrap that and get a new one! Everything else was fine - even my PAL TV and video (that were explicitly marked 50Hz only) worked fine on 60Hz.

I would never consider using a frequency conversion device on such equipment, that's really overkill IMHO. I ended up buying a couple of toroidal transformers (for 2 different rooms) to take care of the stuff that didn't have a built in voltage selector.

Hi all,

After much research and still with no real answers, I as hoping someone has had experience with stepping down the supply voltage and frequency from 240v 50 Hz to 110v 60hz using a step down TX and if there are any negative effects on the output of the A/V receiver??

As per one of my other threads, I am purchasing a pioneer vsx82txs from the USA for use in Australia, the voltage part would be OK but the frequency part (60Hz to 50Hz) has me stumped, ie will it have a negative effect on the output.

Any feedback would be fantastic.
Thankyou..
Scott

 

[PENG]

I can tell you from my experience that I had practically no problems with my equipment doing this the other way around.

The other way around is of lesser concern. I need to think harder but it might even work better.

 

[davo]

What a Rip!!

Scott, I can totally sympathize with what you are trying to do. I just popped into the local hi-fi store today to see the new Pioneer PDP 5000 EX plasma. Fair enough it is a 1080p display at 60f/s, and it is 50", but $15,000???!!!!!!!!!!!!!!
It is total b/s. I did see your thread a week ago and kept some of your questions in mind so I asked to see the spec sheet in the manual. It can handle 110v - 240 v, 50hz/60hz. I guess this means if it works in USA then it works in Australia. Post what happens with your experience of getting gear from USA because at this moment it would be cheaper to fly to america with the missus and by it there, than to by it here. B****ards.!!

p.s. I also overheard a sales rep talking to a know-nothing middle age woman and I quote "Yea, Bose are a really good brand, they sound really good..." Poor fools.

 

[scm]

Update.
I received my receiver, used a step down tranny, everything works fine, no probs to date.
Awesome unit (for my needs at the moment) and I am very happy with my purchase.
Thanks to all who contributed to the thread, it is much appreciated!
Cheers...
Scott