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#2237733 - 02/25/14 11:56 PM Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)??  
Joined: Feb 2013
Posts: 225
phrygian Offline
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phrygian  Offline
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Joined: Feb 2013
Posts: 225
HI there-

I thought I'd bounce this off you guys and gals and see what your thoughts are-
In my search for a 7 footer for recording, one of the models I'm interested in is the Yamaha C7. I've been advised by one technician to avoid any C7 series E (with the E at the beginning of the serial number) - he said sometimes the 5th and 6th octave strings can buzz, and this is extremely difficult, if not impossible, to fix. He said if used, much better to go with a series B or F. Any thoughts on this? The reason I ask is that I was thinking of checking out a C7 this weekend that supposedly is a very nice C-7, according to the seller, but has the E in the serial #. I'd have to drive about 90 minutes to get there. I was just wondering if:

1) You have in fact noticed this problem with this particular series
2) It is rare or a common occurrence

many thanks

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#2237868 - 02/26/14 09:47 AM Re: Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)?? [Re: phrygian]  
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Silverwood Pianos Offline
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Silverwood Pianos  Offline
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Vancouver B. C. Canada

I would encourage you to attend any instrument which is found of interest to you. I dont go for this blanket condemnation of;

I found such and such model of piano that had problems so this means that all of the same models will have problems.

So much depends upon so many variables even with robotic processing lines; no two models will come out the same; very close but not the same.


Dan Silverwood
www.silverwoodpianos.com
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"If you think it's expensive to hire a professional to do the job, wait until you hire an amateur."
#2237886 - 02/26/14 10:31 AM Re: Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)?? [Re: phrygian]  
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Ed McMorrow, RPT Offline
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Ed McMorrow, RPT  Offline
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There was a period about 15-20 years ago when Yamaha made some grands with a round rod as the string termination point of the Capo bar. These do not work well. The treble tone is nasty and overt buzzes often occur.

You can probably see it by using a small inspection mirror and flashlight between the two capo sections under the strut without removing the action.

The only way to properly repair these would involve removing the plate and machining the capo bar to have upside down agraffes installed. Not cheap.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
#2238021 - 02/26/14 03:39 PM Re: Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)?? [Re: Silverwood Pianos]  
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phrygian Offline
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phrygian  Offline
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Thank you Dan, good advice - I will probably go check it out at least

Last edited by phrygian; 02/26/14 03:46 PM.
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#2238022 - 02/26/14 03:46 PM Re: Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)?? [Re: Ed McMorrow, RPT]  
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phrygian Offline
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phrygian  Offline
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Originally Posted by Ed McMorrow, RPT
There was a period about 15-20 years ago when Yamaha made some grands with a round rod as the string termination point of the Capo bar. These do not work well. The treble tone is nasty and overt buzzes often occur.


Ah, this must be what he's talking about then. Ed, then does this round rod construction always seem to produce this buzziness in the treble, or in just some cases? The particular C7-E I was going to check out was apparently used for recording (which is what I was going to do with it as well) & the seller tells me he spent 2 years looking for a piano before finally finding this one. So I thought it would perhaps not have this problem. Just wanted to get your take on it.

Originally Posted by Ed McMorrow, RPT

You can probably see it by using a small inspection mirror and flashlight between the two capo sections under the strut without removing the action.


I'm not so up on the terminology- If I bring the mirror and flashlight, can you explain how to look for this in more detail or in simpler terms (for someone who doesn't really know the names of all the parts)- sorry, and thanks :-)

Last edited by phrygian; 02/26/14 03:47 PM.
#2238172 - 02/26/14 10:04 PM Re: Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)?? [Re: phrygian]  
Joined: Dec 2012
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Ed McMorrow, RPT Offline
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Ed McMorrow, RPT  Offline
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Joined: Dec 2012
Posts: 4,420
Seattle, WA USA
Phrygian,
The capo sections are the two highest sections of strings in a C7. If you open the lid and look in from the treble side you will see the plate strut that runs between the sections. There is room under the capo bar between the sections to place a small inspection mirror under there and shine a flashlight parallel to the strings toward the capo.

You would be best served to hire a technician to inspect the piano overall for you and ask him/her to look specifically for a round rod string termination. I wouldn't buy it if it has it.


In a seemingly infinite universe-infinite human creativity is-seemingly possible.
According to NASA, 93% of the earth like planets possible in the known universe have yet to be formed.
Contact: Ed@LightHammerpiano.com
#2238495 - 02/27/14 02:12 PM Re: Buzzing strings in 5th-6th Octave in Yamaha C7 (Series E)?? [Re: Ed McMorrow, RPT]  
Joined: Feb 2013
Posts: 225
phrygian Offline
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phrygian  Offline
Full Member

Joined: Feb 2013
Posts: 225
Originally Posted by Ed McMorrow, RPT
Phrygian,
The capo sections are the two highest sections of strings in a C7. If you open the lid and look in from the treble side you will see the plate strut that runs between the sections. There is room under the capo bar between the sections to place a small inspection mirror under there and shine a flashlight parallel to the strings toward the capo.

You would be best served to hire a technician to inspect the piano overall for you and ask him/her to look specifically for a round rod string termination. I wouldn't buy it if it has it.


Great, thanks Ed


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