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#1985912 - 11/12/12 11:09 PM PX-350 sound vibration issue. Opinions needed  
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Dave Mack Offline
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Dave Mack  Offline
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Hey guys, Got my 350 tonight. First time DP owner here. Always had synths before. Mostly pleased except for three keys that give REALLY bad rattling sounds when playing the piano.

Here's a video I made...

http://vimeo.com/53377250

Doesn't happen with headphones or on any of the lighter sounds like strings. Those keys are pretty near the left speaker and for whatever reason those tones cause something to vibrate like crazy. Please tell me this isn't normal. I'm sending it back either way but I'd like to get a perfect one. My mother in law is a piano teacher and she's teaching my daughter. At her house they use her Steinway. At my apt they have been using a synthesizer, (which actually did have a decent piano sound) hooked up to an amp and my mother in law constantly complained. I thought this would be a great solution.

Anyways, anyone else have anything similar?. I can't believe this made it through inspection.
Also I think it was an open box unit or a returned one from musician's friend although i bought it new. One of the styrofoam things inside the box was broken and one of the plastic pouches was ripped.

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#1986002 - 11/13/12 05:37 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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spanishbuddha Online content
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Resonance. First thing to try before sending it back is put the unit on a different stand (table, chair, whatever), in a different room and try again. Try tightening any available case screws?Then send it back since I assume it's under warranty.

#1986014 - 11/13/12 06:31 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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JFP Offline
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Is this sound really coming out of the speaker itself ? Or is something else resonating ? Perhaps not even the PX itself ? If it is coming straight from the speaker, it could be either loose or simply broken. Something loose is fixable, a broken speaker = replacement. Hope you can sort it out before sending it back.

#1986090 - 11/13/12 11:49 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Dave Mack Offline
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Thanks for the feedback, (no pun intended) guys. Yeah I tried taking it off the stand and laying it on my carpeted floor. It was a LITTLE better but the vibration sounds were still very audible. I could try the tightening screw trick but it does seen really solid.

The sound doesn't seem to be coming from the speaker but from the area between the speaker and the keys, deep within. I'll hope for the best tonight but as it stands now it won't work for us.

I think it might have been an open box or returned unit. The box itself had clearly been opened as my invoice was inside and one of the styrofoam parts was broken and one of the plastic pouches ripped.

Thanks guys

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#1986115 - 11/13/12 12:31 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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I would go the other way to investigate this: Put some books or something heavy on top of the piano in the problematic area. If it's the top surface of the piano vibrating, this will dampen it.

Of course, sending it back is a pretty safe strategy. I haven't heard anyone else in the forum mentioning this issue. Of course, it's a pretty new piano so not many members do own it yet.

#1986149 - 11/13/12 01:15 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Dave Mack Offline
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Good idea, thanks

#1986163 - 11/13/12 01:44 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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xorbe Offline
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Sounds like a solid reason for exchange. It's probably something simple to damp inside, but it's brand new, who wants to void the warranty like that?

#1986231 - 11/13/12 04:40 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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bfb Offline
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Originally Posted by Dave Mack


I think it might have been an open box or returned unit. The box itself had clearly been opened as my invoice was inside and one of the styrofoam parts was broken and one of the plastic pouches ripped.

Thanks guys


Send it back. immediately. i find your description of how you received it- particularly now that you have an issue to deal with - completely unacceptable. I know torn plastic packaging and broken styrofoam doesn't sound like a big deal but hey- its supposed to be a brand new unit. even if the vibration goes away you will always have the thought that it is a damaged or reconditioned (poorly) unit in the front of your mind. Who needs that?

Last edited by bfb; 11/13/12 04:41 PM.

Steinway M; Roland V-Piano; Yamaha P250;
Ivory II Grands, Italian, American D; Galaxy Vintage D; True Keys American; UVI Yamaha C7; Ravenscroft 275; Garritan CFX
#1986237 - 11/13/12 04:44 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Dave Mack Offline
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Yeah, I'm DEFINITELY not opening it up.

#1986238 - 11/13/12 04:45 PM Re: PX-350 sound vibration issue. Opinions needed [Re: bfb]  
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Dave Mack Offline
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Dave Mack  Offline
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Originally Posted by bfb
Originally Posted by Dave Mack


I think it might have been an open box or returned unit. The box itself had clearly been opened as my invoice was inside and one of the styrofoam parts was broken and one of the plastic pouches ripped.

Thanks guys


Send it back. immediately. i find your description of how you received it- particularly now that you have an issue to deal with - completely unacceptable. I know torn plastic packaging and broken styrofoam doesn't sound like a big deal but hey- its supposed to be a brand new unit. even if the vibration goes away you will always have the thought that it is a damaged or reconditioned (poorly) unit in the front of your mind. Who needs that?


Thanks, yeah. You're right.

#1986286 - 11/13/12 07:11 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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dewster Offline
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I vote for opening it up...

... and taking some NEKID PICHURES!!!

Seriously, it's probably something stupid causing the trouble, and you might learn something whilst inside the thing. Don't break any obvious seals and you're golden. It's either a bad speaker (have you put your ear very near each one to test this?) or something rattling around.

Will you be out any postage sending it back? If so I'd say definitely crack it open (but only if you feel comfortable doing so).

If you can easily fix the problem you might try calling the seller and negotiating an open-box discount (since that seems to be the condition you received it in).

#1986330 - 11/13/12 08:49 PM Re: PX-350 sound vibration issue. Opinions needed [Re: dewster]  
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PossumES8SP280 Offline
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MF issues return labels and even arranges the pickup for you.
However, it is odd that they always open the box to put your packing slip in.


Roland Juno Gi
Casio PX-130
Korg Krome 61
Korg SP280
Kawai ES8
Rokit KRK 6 monitors
MXL V67G microphone
#1986359 - 11/13/12 10:20 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Dave Mack Offline
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Thanks for everything, guys. I got the return label. Going to send it back and keep my fingers crossed for the next one.

#1987033 - 11/15/12 11:50 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Daisser Offline
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It's probably defective but I'll say this about the PX. I was going around in circles for a portable DP and it was all between the P105, PX-150 and the PX-350. I read the endless posts about it on pianoworld. I really loved the touch of the new PX line but the Yamaha piano sound had more depth in my opinion. It was an impossible choice. I live in the NY area so there are plenty of places to try these and I found it very odd that I encountered 2 PX 350's at different stores with rattling either from a cabinet issue or blown speaker. Mass consumers have only had these pianos for two months now and we have no idea of the long term quality but that was a bad omen for me. Granted the P105 has also been out only for two months but Yamaha has built a reputation of quality and Casio has been trying to fight a reputation of not having quality in DPs. I've never had an issue with any Yamaha product I've purchased. We all have had different experiences though, this is just my two cents.

#1987240 - 11/15/12 09:30 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Daisser]  
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galaxy4t Offline
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Originally Posted by Daisser
Yamaha has built a reputation of quality and Casio has been trying to fight a reputation of not having quality in DPs. I've never had an issue with any Yamaha product I've purchased.


There's less risk in owning a Casio product now. They have a 3 year warranty on digital pianos. Also their musical instrument division was reorganized 3 or 4 years ago. Your seeing some of those changes reflected in their product line.

#1987839 - 11/17/12 03:17 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Dave Mack Offline
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Thanks again for all the feedback guys. It's on it's way back now. Fingers crossed for the replacement. wink

#1987849 - 11/17/12 03:44 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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PossumES8SP280 Offline
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I got my replacement- its a lot better. I will be posting just 1 picture- 4 or 5 keys from the end the last G is just a little higher than the F but the overall spacing was better.
Is key height anything to worry about?

This one was packed better, but I found it ironic that they have masking tape on the keys and had scotch tape on the last ones.


Roland Juno Gi
Casio PX-130
Korg Krome 61
Korg SP280
Kawai ES8
Rokit KRK 6 monitors
MXL V67G microphone
#1988036 - 11/18/12 06:06 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Dave Horne Online content
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I vote for opening it up as well.

If you really want to have a good idea of the power of resonance, drop a coin in the F hole of an upright bass. (Do it when the bass player is not looking.)



website | mp3\wav files | Yamaha AvantGrand N3 | Roland RD 2000 | Sennheiser HD 598 headphones
#1988044 - 11/18/12 08:11 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Bayoy Offline
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The same issue I had with my px350. I returned it. It actually did it and then quit after I restarted it for the second time.

#1988080 - 11/18/12 10:21 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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JFP Offline
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Please stop worrying about a little keyspacing, if its functioning well. Again it's not rocket science - if the rest is fine, enjoy your piano !

#1988148 - 11/18/12 01:29 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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helloworld1 Offline
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I have almost exactly the vibration / resonance issue. When I press G / G# / A key in lower register (Especially G2, G#2 A2, It also happen in G3 but not as noticable), the mid-upper-left part of the piano is making a rattling vibration noise. It only happens when I press it a little bit hard. Pressing G2 and G#2 together, I got a very strong vibration. My piano was new and unopened in the box unlike you.

I wonder if it is a common defect of the px350

Last edited by helloworld1; 11/18/12 01:31 PM.
#1988256 - 11/18/12 06:56 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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I went to the nearby Guitar Center and try out their PX 350. Surprisingly if I press G2 and G#2 key together hard, the piano is also making rattling sound hard. Also F3 and F5 make the right part of the piano vibrating too.

#1988262 - 11/18/12 07:11 PM Re: PX-350 sound vibration issue. Opinions needed [Re: helloworld1]  
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PossumES8SP280 Offline
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I checked- luckily I don't I have those issues, could be QC issue with design and when it was made in the production line.


Roland Juno Gi
Casio PX-130
Korg Krome 61
Korg SP280
Kawai ES8
Rokit KRK 6 monitors
MXL V67G microphone
#1989159 - 11/20/12 11:59 PM Re: PX-350 sound vibration issue. Opinions needed [Re: PossumES8SP280]  
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I couldn't find any black PX350s at the store without this issue. Probably a bad batch. Maybe the white ones are better.

#1989654 - 11/22/12 03:49 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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Grumpy Old Man Offline
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Just to add a bit more comparative info: I quickly wanted to chime in on this since I just got a PX350 to start down the long road of an adult piano player... Mine was delivered without broken styrofoam, opened bags, and the tape holding the keys in place was one continuous strip.

I find the other descriptions a bit fishy, doesn't sound factory new to me, and sometimes things get returned -for a reason- but some unscrupulous dealers will just give it a cursory glance and decide it's OK to re-sell the same one as new...

I'm using it with the (rather sturdy) Casio stand, and there is no rattling on any note or key, at least up to the max. speaker volume I dare use in my apartment (will be using headphones almost exclusively, the main reason for picking a digital piano)

All the keys are at the exact same height, and the gap inbetween may vary by fractions of a millimeter but none stand out.

Generally, compared to the Roland I owned a decade or so ago, and the one at a friend's place I recently tried that inspired me to get give it another go, I find the PX350 exceptional in terms of features and keyboard action, esp. for the price. I'm sure there's better out there but at a higher cost, and certainly not something I'd probably be able to appreciate at my level...

P.S.: The original video seems to be password protected, so I don't know how bad the vibration issue would actually be.

Last edited by Grumpy Old Man; 11/22/12 03:52 AM. Reason: P.S.
#1989759 - 11/22/12 01:09 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Grumpy Old Man]  
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Vikas Sharma Offline
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Originally Posted by Grumpy Old Man
Mine was delivered without broken styrofoam, opened bags, and the tape holding the keys in place was one continuous strip.
...
I'm using it with the (rather sturdy) Casio stand, and there is no rattling on any note or key, at least up to the max. speaker volume I dare use in my apartment (will be using headphones almost exclusively, the main reason for picking a digital piano)

All the keys are at the exact same height, and the gap inbetween may vary by fractions of a millimeter but none stand out.

...I find the PX350 exceptional in terms of features and keyboard action, esp. for the price. I'm sure there's better out there but at a higher cost, and certainly not something I'd probably be able to appreciate at my level...

My experience matches 100% with all of your above statements.


Vikas Sharma
'without music, life would be a mistake' - F Nietzsche
#1989816 - 11/22/12 04:01 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Grumpy Old Man]  
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I also using Casio's stand and the vibration is not coming from the stand. It is like from something inside. I send mine back for replacement. And hopefully the return will be better. I definite like the feature px 350 has.

#1989823 - 11/22/12 04:21 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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ill be getting mine this Wednesday, along with stand.. ill let you guys now if I run into any problems.

#1993482 - 12/02/12 02:51 AM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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xorbe Offline
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I discovered that one note on my PX-330 tickles a small buzz over by the mod wheel on the left ... oh well lol.

#1993770 - 12/02/12 05:54 PM Re: PX-350 sound vibration issue. Opinions needed [Re: Dave Mack]  
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helloworld1 Offline
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The PX350 replacement also have vibration with G#2 key instead of G2 key.
Also the USB port (No usb stick) vibrate with F5 key.

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