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Re: My opinion on digital pianos after two weeks [Re: goatfreed] #1434369 05/11/10 10:45 AM
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TimR Offline
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Originally Posted by goatfreed
Then it must be the 50hz current. I actually went back to the Store and the 305 on display also hums. Roland won't fix it on warranty as this obviously affects all 305 in Europe apparently. I am aware that there are cheaper Pianos that are Silent, but i like all the other Features on this one.


That seems possible.

I had a hair clippers I ran in Germany using a step down transformer because it was 110V only.

It worked fine but seemed at least four times as loud, caused by the difference in frequency.


gotta go practice
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Re: My opinion on digital pianos after two weeks [Re: TimR] #1434412 05/11/10 11:54 AM
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Does anybody know why Europe uses 50Hz but the US uses 60Hz? Why not standardize on the same frequency at least to avoid problems like this?

And why doesn't Roland design their transformer different to adapt products they sell in Europe to the right frequency?

Re: My opinion on digital pianos after two weeks [Re: Volusiano] #1434427 05/11/10 12:20 PM
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50 Hz isn't the problem. Lots of equipment run just fine on 50 Hz.

Either goatfreed's piano transformer is defective or the piano design is defective.

Re: My opinion on digital pianos after two weeks [Re: MacMacMac] #1434431 05/11/10 12:24 PM
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I assume the latter, since the piano at the store was exactly the same. So for any potential 305 customers just keep this in mind. Right now it doesn't actually bother me that much anymore since I'm using in ear headphones at night that block out noise anyway and during the day when someone plays it then the piano itself is of course blocking out the noise.

But again I want to stress that apart from that this is really a fine piano.

Re: My opinion on digital pianos after two weeks [Re: goatfreed] #1434571 05/11/10 03:32 PM
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I wonder if something like the APC power conditioner might help remove the noise from the transformer? http://www.google.com/products/cata...;resnum=3&ved=0CDoQ8wIwAg#ps-sellers




Re: My opinion on digital pianos after two weeks [Re: goatfreed] #1434706 05/11/10 06:13 PM
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Originally Posted by goatfreed
Then it must be the 50hz current. I actually went back to the Store and the 305 on display also hums. Roland won't fix it on warranty as this obviously affects all 305 in Europe apparently. I am aware that there are cheaper Pianos that are Silent, but i like all the other Features on this one.


Toyota should have tried that: "The gas pedals stick on ALL of our cars, That just the way Toyotas are made."

You could fix the problem yourself, If you are lucky the transformer is mounted with screws and you could fit soft rubber washers to isolate vibration or minor surgery to move the power supply and AC mains power from the piano to it's own chassis that can be hidden in a closet.

Re: My opinion on digital pianos after two weeks [Re: ChrisA] #1434983 05/12/10 06:27 AM
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This is just ridiculous - a €2.000 audio product with noise issues due to power supply frequency? If that really is the reason, it is a major FAILURE for Roland...

This might be tolerable for hair clippers, but not for a digital piano...
Originally Posted by Volusiano

Does anybody know why Europe uses 50Hz but the US uses 60Hz? Why not standardize on the same frequency at least to avoid problems like this?

I'd suspect it's for similar reasons why we use the metric system, the Celsius temperature scale or the PAL standard (okay, this is almost history) ;-): just because.

Re: My opinion on digital pianos after two weeks [Re: Volusiano] #1435026 05/12/10 08:27 AM
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Originally Posted by Volusiano
Does anybody know why Europe uses 50Hz but the US uses 60Hz? Why not standardize on the same frequency at least to avoid problems like this?


Yup, it seems like nobody really knows. There is a good Wikipedia article about the differences:

Utility Frequency



  • Debussy - Le Petit Nègre, L. 114
  • Haydn - Sonata in Gm, Hob. XVI/44

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Re: My opinion on digital pianos after two weeks [Re: LaRate] #1435039 05/12/10 08:54 AM
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Originally Posted by LaRate
This is just ridiculous - a €2.000 audio product with noise issues due to power supply frequency? If that really is the reason, it is a major FAILURE for Roland...

I agree with this and they lost at least one potential sale. I could not believe it and checked it for myself in a UK store. The problem does not exist on the HP302 or 307, just the 305, so that's really weird as a design failure.

Re: My opinion on digital pianos after two weeks [Re: spanishbuddha] #1435046 05/12/10 08:59 AM
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Very nice assessment, i tend to agree with most of what you say


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Re: My opinion on digital pianos after two weeks [Re: Volusiano] #1435087 05/12/10 10:26 AM
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theJourney Offline
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Originally Posted by Volusiano
Does anybody know why Europe uses 50Hz but the US uses 60Hz? Why not standardize on the same frequency at least to avoid problems like this?

And why doesn't Roland design their transformer different to adapt products they sell in Europe to the right frequency?


You mean: why does the US use 60Hz and most of the rest of the world use 50Hz?

Probably for the same reason that the rest of the world is on the metric system and the US is a couple of centuries backward using bushels and yards and gallons and such.

Re: My opinion on digital pianos after two weeks [Re: theJourney] #1435154 05/12/10 12:05 PM
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Originally Posted by theJourney
...the rest of the world is on the metric system and the US is a couple of centuries backward using bushels and yards and gallons and such.

1982 - President Ronald Reagan disbanded the U.S. Metric Board and canceled its funding. Link

We seem to be trying our hardest to become a third-world backwater country - if nothing else we may soon succeed at that.

Re: My opinion on digital pianos after two weeks [Re: theJourney] #1435263 05/12/10 03:24 PM
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Originally Posted by theJourney
Probably for the same reason that the rest of the world is on the metric system and the US is a couple of centuries backward using bushels and yards and gallons and such.


Yea, go into an English Pub and order a Litre of beer. You'll probably want to ask how much a stone weighs too.

Re: My opinion on digital pianos after two weeks [Re: ChrisA] #1437782 05/16/10 11:52 AM
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I've come to the conclusion that I like the DPs better for blues, and baroque music, even early classical, some jazz also.

I like acoustic better for romantic/impressionistic music, there's a real problem on DPS with that.

I have noticed with my YPG that after a year or so the tunings sounding a little off, and some of the voices aren't as great as they were.

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