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Privia PX-730 weird sound? #1398478
03/18/10 09:13 AM
03/18/10 09:13 AM
Joined: Feb 2010
Posts: 2
Maxime Offline OP
Junior Member
Maxime  Offline OP
Junior Member

Joined: Feb 2010
Posts: 2
Hi all! I just bought a Privia PX-730 used from someone to start playing piano... After playing on it for a couple of weeks, I started to hear some weirds sounds...

Here is my explication (sorry for the details, it's hard to describ it, since english is not my first language!)

Some of the note, below the middle C, when I play them, sound a little like "plastic"... When I pushed a note, it comes up like it should with the cons-weight, but instead of doing a "muffle" toc toc, it is doing a sound like if plastic was loose, and it is kind of bugging me when I play it and the sound is not put very high...

Another problem that I can hear is when I push a little harder on notes (generally some above the middle C) I can hear a "ring" or a little "bell" sound in background of the note. I tought it was a speaker problem, but same thing with my headphone...

The piano as been bought on october 2009 by the guy who sold it to me... too exited to ask question to him or notice this when i went to his home because it was my first piano, i forgot to ask him for the bill. I wrote him a e-mail this week and he told me that he can't find the bill of the piano...

Before calling Casio to talk about that problem I would like to know if that probleme can be consider as "not abnormal" and if someone has ever met this problem!!

Thanks a lot guys!


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Re: Privia PX-730 weird sound? [Re: Maxime] #1398593
03/18/10 12:06 PM
03/18/10 12:06 PM
Joined: Dec 2009
Posts: 54
Czech Republic
pesk Offline
Full Member
pesk  Offline
Full Member

Joined: Dec 2009
Posts: 54
Czech Republic
Hi Maxime, I have PX-330 and I hear weird sounds in upper middle too. Piano patch sounds there very unnatural and artificial. I'm playing mostly with headphones so after while it's very audible. My opinion is that it's caused by short samples with audible looping in sustain and stretching of samples over few keys. Probably DSP processing (Casio's AiF) amplify this because when I decrease briliance then it's not so audible. Also some mellow patches are a little bit better. You can also have a look on dewster's thread about DP sound analyze:


cheers, Petr

Re: Privia PX-730 weird sound? [Re: Maxime] #1399072
03/19/10 04:19 AM
03/19/10 04:19 AM
Joined: Oct 2009
Posts: 97
Sean M. Offline
Full Member
Sean M.  Offline
Full Member

Joined: Oct 2009
Posts: 97
Hi, I have the PX-130 which has the same action and sounds as the PX-730.

I haven't noticed a loose plastic sound in the lower register. I just hear the usual muffled thud on all the keys, if I have the volume down very low. I'm pretty sure this is an issue on all keyboards.

That ringing overtone on a few keys about an octave above middle C... I know it well. I have no explanation. It's annoying. It's present on all three of the piano sounds on the keyboard, so I don't think it came from whatever piano they sampled originally.

I don't mind it so much given the price of the PX-130 for what you get. If I had sprung for the PX-730 though I might feel differently.

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