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#1238007 - 07/27/09 07:13 AM Kawai RX6 first 4 bi-chord notes sound metallic
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
The first 4 notes from G1 to A sharp 1 sound metallic, lacking in tone, no resonance, tinny and thin. All notes below and above these sound GREAT!!!! Why is this so?? The piano is 1 year old and is an excellent piano. These issues are my only problems. They are problems that really BUG me! Something is NOT right. Piano has been set up, strings have been seated, the strings are all perfectly mating with hammers. The tuner needled the hammers - nothing changed except the sound was muted. Not good. Tone the same. Thin, metallic and lacking in resonance. The 7 ft Schimmel sounds fabulous in this area!
I have thought about a possible solution. Maybe these first few notes need new strings of a THICKER GUAGE??? Yamaha ( Steinway, who use the same scale design as Kawai with the first bichord on G1) use mono-chord stings to the A sharp. Kawai puts the G1 as the fist bi-chord. What do members think of this? I woud like to replace the first few strings of the bi-chords with THICKER guage strings. The sound of these notes is driving me MAD MAD MAD!! SOMETHING IS NOT RIGHT HERE. Any ideas would be most appreciated. Thank you.


Edited by piano_mike (07/27/09 07:23 AM)
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1238024 - 07/27/09 08:51 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
The overall tone of the piano is otherwise wonderful. The bass is very consistent and smooth in its transition from treble to tenor to bass and the tone is very warm and mellow, except for these G1 G sharp 1, A1, A sharp 1. From the B up it is great!
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1238227 - 07/27/09 02:13 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
Glenn Grafton Offline
Full Member

Registered: 01/28/05
Posts: 190
Loc: Souderton PA
A few suggestions:

1. First take a deep breath, get away from the piano, take in a movie or whatever.

2. Contact the piano tech that you had out and express your feelings. See if he can come out again to take another look at the piano — WHEN YOU ARE THERE.

3. Don't think that you can willy nilly change strings on your Kawai. The people at Kawai that designed the scale know way more than you or your piano tech do. Best to work with the piano tech you had out initially or someone that Kawai recommends.

You may also want to ask your piano tech to talk with Don Mannino @ Kawai - 800-421-2177. Don has an incredible wealth of knowledge on servicing/tweaking Kawai grands. That would be my recommendation.

The conversation that Don and your piano tech has with Don will do magnitudes more than piano players opinions on this forum will accomplish.
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Grafton Piano & Organ Co.
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#1238615 - 07/28/09 01:47 AM Re: Kawai RX6 first 4 bi-chord notes sound metalli [Re: Glenn Grafton]
Konzert Patrick Offline
500 Post Club Member

Registered: 07/09/08
Posts: 791
Loc: The Netherlands
deleted


Edited by GC1Patrick (07/28/09 01:53 AM)
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Schimmel Konzert 189 Tradition

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#1240186 - 07/30/09 05:55 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Glenn Grafton]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Thanks Glenn for your reply. I get the impression that many techs on this forum don't eally take me very serious. I think I bring up some insteresting ideas and observations, as I have been a pianist have been tinkering with pianos since I was 12. I first pulled my old Schwechten upright to bits! (God - my mother had a fit - but I fixed it and whitened the ivories with peroxide! A nice memory, as I am now 55)

Beleive me I DO know pianos and what they do and maybe should sound like, based on size, quality and make.

The Kawai is an excellent piano. But if they are experts and know more than me (as you have said and that is probably true) then why do they allow such an expensive, 7 ft semi-concert grand come out of the factory with bad sounding notes as I have tried to describe? I am beginning to think I KNOW more about sound quality than they do. But of course I do not control their budgets and cost control etc.. Maybe someone put in some dud strings in my piano?? Maybe the windings are not tight enough. Maybe the copper winding has some flaws in it so the string vibrates incorrectly? Maybe I have 6 of these poor strings on my piano? Something is not quite right.

I often watch movies - every night in fact and I do breath and take deap breaths at the gym during my workouts.

Even so I am very keen to make the most of my expensive investment. This piano cost me MORE than just an arm and a leg I can assure you. I am in debt for the rest of my life because of this piano! And I want it right. Shouldn't I?

When the tech comes I am always there. But in future I will question everything he does and I will watch and observe. My tech is coming out next week and hopefully he can suggest something. Maybe it just might need a string twist? I don't know. I hope that's all it is but honestly I don't think it will make an ounce of difference.

I agree with you highly that the piano just needs tweeking by someone is is qualified and WILLING to do so. I am a very fussy person and I know what I want to hear and should hear on this piano. I am so particular that I found faults on a Steinway concert grand, (brand new) worth over $300,000.00AU. I was quite suprised, but then again even what they say is the "best" piano in the world is not perfect. The issue I found on the Steinway was the same as the problems I found on my previous pianos - of which no tech was able to fix. These pianos incidently went promptly BACK to the dealer.

Unfortunately, Don Mannino might now want to have anything to do with me, as he has deleted and not responded to my previous posts. He has given up on me which is a pity, as I highly regard him and the Kawai brand. It would be indeed great to have my tech and Don discuss the RX6 and come to some conclusion, but I doubt if Don would be willing to do this.

Thanks for you comments Glenn and as soon as I know what the problem is with my piano I will gradly enlighten members of this forum and I will be a very happy piano player!

Cheers!
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1240370 - 07/30/09 01:40 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
Gadzar Offline
1000 Post Club Member

Registered: 12/15/06
Posts: 1726
Loc: Mexico City
I take your post in a serious way, but I have no answer to it. The problem you are referring is not uncomun. I've seen several posts in this forum talking about problems with the scaling of pianos of well reputed brands. I seems that most of such problems are near the bridge break and the passage from wound to plain wire strings.

But, I've never seen a definitive answer to this problem. Each one has his opinions of course but none can give a definitive solution to these issues. Some suggest to use thicker wire, some suggest the contraire in order to increase string's tension, some suggest to replace trichord plain wire unisons with bichords of wound strings unisons, etc...

I am not a specialist in scaling but I guess it is not an easy task to design a scale where there is no abrupt change at this spot in the piano's scale.


Edited by Gadzar (07/30/09 01:50 PM)
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Piano Technician
rafaelmelo@afinacionpianos.com.mx

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#1240904 - 07/31/09 11:44 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Gadzar]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Thanks Rafael,

You are quite right. As I test out other pianos I always find these notes sounding poor near the breaks. I also have a poor sounding bi-chord right at the tenor/bass break. But it does not worry we too much as it is tonally of the same timbre as the surrounding notes, but it sounds a bit harsh and metallic. The reason I object so much to the low G is that in this area the notes surrounding have really nice deep, rich sonorous tones. The G stands out big time as it has no tone, lacks sonority, sounds metallic and thin.

I will continue to pursue an answer to this issue because I believe it to be worth the trouble. The RX6 is a mighty good piano and deserves to be as near perfect as possible.

Many thanks for your messages,
Cheers,

Michael
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1241962 - 08/02/09 09:05 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
I spoke to a good friend today - he was my tech for the last 30 years when I lived in the eastern part of Melbourne. He sugested that it may be the hammers causing these problems. Of course he is not sure - but it was a suggestion. Maybe the density / hammer mass is not right for these strings in the break area? Voicing with needles seems not to make any difference eccept mute the sound and it becomes muffled. Maybe a difference voicing technique is needed? Is is possible to make a bass bichord to sound MORE BASSY with more tonal quality??
Any ideas? Thanks!
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1248398 - 08/13/09 10:56 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Hows this ladies and gentlemen: I got so sick and tired of hearing those metallic, harsh sounding notes. So I pulled out the action, cut some small strips of name board felt and attached these to the offending hammers with masking tape. The strike points covered with name board felt. Put the action back in. Viola! The sound is GOOD!! More fundamental, more tonal quality NO harsh metallic sound, no ringing, and the notes sounded similar in tone to their neighbors! (except of course slight muffling )This is all I am asking for. Surely it is possible to fix this problem, as the name board felts will not stay in place for too long. So the hammer is the culprit!

My hypothesis is that the hammers on my piano have become somewhat too hard and need to be softened, voiced BUT in such a way that the tone does not become muffled.

My tech needled these hammers last week - but it made no difference. Why did this make no difference?

Before I bought the piano is had been in the dealers shop in an airconditioned (evaporated - water type) environment for about 2 years. The strings were slightly rusty too. Is is possible that this effected the hammers?

Any ideas would be gratefully accepted.
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1248422 - 08/13/09 11:30 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
Steve Jackson Offline
500 Post Club Member

Registered: 03/02/07
Posts: 660
Loc: Toronto

Hi Mike:

You just need an experienced patient technician who will listen to you and make the piano just how you want it, and is also capable of telling you what are this model's limitations. All pianos have limitations. Your part is to be patient too, work with the tech and pay the fees. A good voicer can work wonders with your piano. You most certainly can control the harmonic structure produced by a hammer, which can give a rounder tone and more power, or whatever. However, some hammers respnd better and stay put longer. Find the right tech, even if it takes a while. The right tech is the one who listens to you and can translate what you are saying into technical terms, and take the appropriate steps to translate the technical terms into action producing what you want within the limitations of your piano.

Good luck!

Steve
_________________________
Vintage Piano sales and restoration in Toronto
Exclusive Live Performance Player Systems Dealer

http://stevejacksonpianos.com

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#1248534 - 08/13/09 02:01 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
Silverwood Pianos Offline
4000 Post Club Member

Registered: 03/10/08
Posts: 4190
Loc: Vancouver B. C. Canada

Question:

“My tech needled these hammers last week - but it made no difference. Why did this make no difference?”

Answer:

Most likely because he/she did not voice the correct area of the hammer to remove the unpleasant sound you are hearing.

Observation:

“So I pulled out the action, cut some small strips of name board felt and attached these to the offending hammers with masking tape. The strike points covered with name board felt. Put the action back in. Viola! The sound is GOOD!! More fundamental, more tonal quality NO harsh metallic sound, no ringing, and the notes sounded similar in tone to their neighbors! (except of course slight muffling )This is all I am asking for. Surely it is possible to fix this problem, as the name board felts will not stay in place for too long. So the hammer is the culprit!”

Possible remedy:

When you state that you have covered the strike point of the hammer to get the sound you want, then voicing on the crown and near crown is what you are looking for. Maybe even some cross stitching is required. This will cause the front of the hammer to expand and “cushion” the blow of the hammer strike. This allows the hammer to stay on the strings a split second longer than normal.

Also remember that any hammer set will have better final results if the set is shaped correctly previous to commencing the voicing procedures…..
_________________________
Dan Silverwood
www.silverwoodpianos.com
http://silverwoodpianos.blogspot.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."

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#1248994 - 08/14/09 10:05 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Steve Jackson]
Dave Stahl Offline
1000 Post Club Member

Registered: 05/06/07
Posts: 1645
Hello Mike,

Your experiment with name board felt told you something. That felt is far softer than the hammer felt. If that sound is what you want, I would suggest--at the risk of egg on my face because I haven't seen the piano--that your intuition is correct: that the hammer needs some voicing on those notes, probably not very much, and probably near the crown.

I don't know what the odds are that you can get one of the Shigeru MPAs out to work on your piano when he's in your area working on the SKs, but it would be worth checking into.
_________________________
Promote Harmony in the Universe...Tune your piano!

Dave Stahl, RPT
Piano Technician's Guild
San Jose, CA
http://www.youtube.com/watch?v=JAniw3m7L2I
http://dstahlpiano.net

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#1249031 - 08/14/09 10:55 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Dave Stahl]
MarKey Offline
Full Member

Registered: 03/11/07
Posts: 235
Mike, that was a cool experiment. Try: Isaac Piano Hammers and/or bass strings at: http://isaacpiano.com/


Edited by MarKey (08/14/09 10:55 AM)
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Time's a tickin!

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#1250514 - 08/16/09 11:01 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Steve Jackson]
Seeker Offline
Full Member

Registered: 06/26/04
Posts: 360
Loc: Rockville, MD
Originally Posted By: Steve Jackson

Hi Mike:

You just need an experienced patient technician who will listen to you and make the piano just how you want it, and is also capable of telling you what are this model's limitations. All pianos have limitations. Your part is to be patient too, work with the tech and pay the fees. A good voicer can work wonders with your piano. You most certainly can control the harmonic structure produced by a hammer, which can give a rounder tone and more power, or whatever. However, some hammers respond better and stay put longer. Find the right tech, even if it takes a while. The right tech is the one who listens to you and can translate what you are saying into technical terms, and take the appropriate steps to translate the technical terms into action producing what you want within the limitations of your piano.

Good luck!

Steve


I think Steve's got it just right as well as Dave Stahl who told you to see if you could find a way to get one of the Shigeru-Kawai factory techs to work on your instrument.

As an Australian, you might be interested to know that you've got some folks in Sydney at Overs Pianos http://www.overspianos.com.au who, from what I have read, do superb rebuilding work. More interesting, Ron Overs has even designed and built a new concert grand with a number of enhancements to traditional piano design. I've heard recordings of it, and they sound great. The relevance to your situation is, I suspect, that he and his techs are extremely competent. Unfortunately they are not in your neighborhood although they're at least on the same continent. Depending on your budget, you could consider flying one them to work on your piano (if they'd take the gig). Alternatively, they might have a network of contacts in the piano technician world in Australia from which they could refer somebody closer to you geographically with the right skills to help you with your piano problem. It's probably worth a phone call.

BTW - brilliant problem determination on your part! My bet is that the problem is, indeed, with the voicing of the hammers in that area of the piano - but you've got to get a tech who knows what s/he's doing to work on it. There's way more to it than just needling near the crown of the hammer thought that may well be all that's needed to address your situation. There's a huge thread on voicing here in the tech forum on the ART of voicing. You could read it and giver yourself a headache from trying to reconcile the many points of view if you find that sort of exercise interesting ;-)

Good Luck with your piano.
_________________________
Andrew Kraus, Pianist
Educated Amateur Tuner/Technician
Rockville, MD USA
www.AndrewKraus.com
www.YouTube.com/RockvillePianoGuy
Twitter at @IAmAPianist

1929 Steinert 6'10" (Close copy of New York S&S "B")

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#1257756 - 08/28/09 09:59 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Steve Jackson]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Thanks Steve! You are so very right here. I appreciate your help. I think I have found someone. My tech who I have known for 35 years or so, but lives a long distance from me is willing to come over and sort the piano out for me. He understand me and listens. I am quite convinced that my problem is simply a hammers voicing issue which needs lots of patience and care and expertise. Oh and the piano is almost 3 years old. I found out recenlty from Kawai. As it has been in a dealers shop with watercooled airconditioning and in a wharehouse (under what conditions??) all this time, it is any wonder the hammers and not at their optimal condition for a fussy player like me.I took out some hammers and had a good look at them and felt the hardness of the felt. They were as hard as rocks!

Cheers! I will let you know how things go.

Michael
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1257764 - 08/28/09 10:09 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Thanks to everyone here for your help.
Fantastic information. I will post info on the results. I just know my RX6 can be awesome!
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1257776 - 08/28/09 10:27 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
Hop Offline
500 Post Club Member

Registered: 01/24/08
Posts: 654
Loc: Hudson, FL
Piano Mike:

Have you tried voicing on the strike points rather than on the shoulders? My limited understanding is that this is not normally desireable, but perhaps in your situation, mindful of your experiment, this might help. My hammers were voiced (lightly, lightly) right on the strike point. Sounds good to me!

Hop
_________________________
HG178, Roland FP-5, Casio PX 130

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#1446035 - 05/29/10 12:19 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Hop]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Hi all, after some busy months of performing and teaching I am now back trying to solve a few issues with my RX. (See my other recnet posting regarding the pianos raise in pitch!)I actually got so fed up with techs not fixing the problem and NOT hearing the offending sound that I was hearing.. I bought my own voicing kit. With great care and reading I will voice these offending hammers and post the results. When I pluck these strings in the area with a guitar pick all the strings sound uniform and resonant. I think its the hammer for sure being the problem.

I really appreciate all your help and ideas. Most grateful to all. Keep up the good work and enjoy piano world!
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1446099 - 05/29/10 02:34 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
kpembrook Offline
1000 Post Club Member

Registered: 04/06/10
Posts: 1309
Loc: Michigan
Originally Posted By: piano_mike
Hi all, after some busy months of performing and teaching I am now back trying to solve a few issues with my RX. (See my other recnet posting regarding the pianos raise in pitch!)I actually got so fed up with techs not fixing the problem and NOT hearing the offending sound that I was hearing.. I bought my own voicing kit. With great care and reading I will voice these offending hammers and post the results. When I pluck these strings in the area with a guitar pick all the strings sound uniform and resonant. I think its the hammer for sure being the problem.

I really appreciate all your help and ideas. Most grateful to all. Keep up the good work and enjoy piano world!


You may be right -- although it is unusual for individual or a few hammers in a set to have a tonal quality radically different from the rest. One other possibility that I would suggest you check out first is that when the note is struck, the excursion of the string is far enough to brush against the damper wire. I don't know exactly what you are hearing, but this can make a "zing". You can't even see it but if you move the damper wire away from the unison, the sound will go away.

If you PM me, I can send you a PDF of an article I wrote titled "Voicing for the Rest of Us". Most instructions for voicing are way more complicated than necessary.

--Keith
_________________________
Keith Akins, RPT
USA Distributor for Isaac Cadenza hammers and Profundo Bass Strings
Supporting Piano Owners D-I-Y piano tuning and repair

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#1449322 - 06/03/10 08:56 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: kpembrook]
Porten2 Offline
Full Member

Registered: 05/22/10
Posts: 38
Loc: Cicero, IL
I played an RX1 at the store and noticed the same thing in the upper break. Just 5 or 6 notes and then it was fine above that. I'm interested in knowing how this turns out.
_________________________
Kawai MP9000
Kawai RX1

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#1449535 - 06/03/10 02:40 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Porten2]
piano_tech chris Offline
Full Member

Registered: 01/10/10
Posts: 72
Loc: South Central PA
First, find out which string is causing the metallic ringing of the bi-chord unison, then use a voicing tool to needle "in line" from the end of the string grooves, not at the near crown or crown area of the hammer. Don't go too deep, 4-5mm or so should do the trick.

This should reduce or eliminate this metallic ringing you are hearing. I would not normally suggest this as a DIY project, but since you have some technical background, it should work.

There are other technics to "get more" out of the hammer. How old are the hammers again?

Enjoy


Edited by piano_tech chris (06/03/10 02:42 PM)
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#1469842 - 07/07/10 12:13 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Porten2]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Originally Posted By: Porten2
I played an RX1 at the store and noticed the same thing in the upper break. Just 5 or 6 notes and then it was fine above that. I'm interested in knowing how this turns out.
Thanks, I will post the results of my findings for sure.
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1469848 - 07/07/10 12:20 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: piano_tech chris]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Originally Posted By: piano_tech chris
First, find out which string is causing the metallic ringing of the bi-chord unison, then use a voicing tool to needle "in line" from the end of the string grooves, not at the near crown or crown area of the hammer. Don't go too deep, 4-5mm or so should do the trick.

This should reduce or eliminate this metallic ringing you are hearing. I would not normally suggest this as a DIY project, but since you have some technical background, it should work.

There are other technics to "get more" out of the hammer. How old are the hammers again? Hi Chris, the hammers would be about 3/4 years old, as the piano was in the shop for 2 years i think..its a new piano which has only had basic factory (probably a rushed effort being a cheaper RX and not a Shigeru)voicing. On the other hand the hammers may have hardened due to water cooled airconditioning in the dealers shop? (The strings were rusty)

Enjoy
_________________________
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Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1469849 - 07/07/10 12:21 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: piano_tech chris]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Originally Posted By: piano_tech chris
First, find out which string is causing the metallic ringing of the bi-chord unison, then use a voicing tool to needle "in line" from the end of the string grooves, not at the near crown or crown area of the hammer. Don't go too deep, 4-5mm or so should do the trick.

This should reduce or eliminate this metallic ringing you are hearing. I would not normally suggest this as a DIY project, but since you have some technical background, it should work.

There are other technics to "get more" out of the hammer. How old are the hammers again?

Enjoy
Hi Chris, the hammers would be about 3/4 years old, as the piano was in the shop for 2 years i think..its a new piano which has only had basic factory (probably a rushed effort being a cheaper RX and not a Shigeru)voicing. On the other hand the hammers may have hardened due to water cooled airconditioning in the dealers shop? (The strings were rusty) Cheers, Mike
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Roland E09W Interactive Arranger

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#1470334 - 07/08/10 06:47 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Glenn Grafton]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Originally Posted By: Glenn Grafton
A few suggestions:

1. First take a deep breath, get away from the piano, take in a movie or whatever.

2. Contact the piano tech that you had out and express your feelings. See if he can come out again to take another look at the piano — WHEN YOU ARE THERE.

3. Don't think that you can willy nilly change strings on your Kawai. The people at Kawai that designed the scale know way more than you or your piano tech do. Best to work with the piano tech you had out initially or someone that Kawai recommends.

You may also want to ask your piano tech to talk with Don Mannino @ Kawai - 800-421-2177. Don has an incredible wealth of knowledge on servicing/tweaking Kawai grands. That would be my recommendation.

The conversation that Don and your piano tech has with Don will do magnitudes more than piano players opinions on this forum will accomplish.
"""First take a deep breath, get away from the piano, take in a movie or whatever."""
You have to be kidding!... What the...lol
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1470336 - 07/08/10 06:48 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: eightyeight_keys]
eightyeight_keys Offline
Full Member

Registered: 12/20/08
Posts: 383
Loc: Melbourne, Australia
Originally Posted By: piano_mike
Originally Posted By: Glenn Grafton
A few suggestions:

1. First take a deep breath, get away from the piano, take in a movie or whatever.

2. Contact the piano tech that you had out and express your feelings. See if he can come out again to take another look at the piano — WHEN YOU ARE THERE.

3. Don't think that you can willy nilly change strings on your Kawai. The people at Kawai that designed the scale know way more than you or your piano tech do. Best to work with the piano tech you had out initially or someone that Kawai recommends.

You may also want to ask your piano tech to talk with Don Mannino @ Kawai - 800-421-2177. Don has an incredible wealth of knowledge on servicing/tweaking Kawai grands. That would be my recommendation.

The conversation that Don and your piano tech has with Don will do magnitudes more than piano players opinions on this forum will accomplish.
"""First take a deep breath, get away from the piano, take in a movie or whatever."""
You have to be kidding!... What the...lol
Oh, I should mention - Don won't talk to me...
_________________________
Kawai RX6G Grand
Bernstien/Hailun Europa BH - 1EP Upright
Roland HP-335 Digital Piano
Yamaha W7 Synthesizer
Roland E09W Interactive Arranger

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#1470403 - 07/08/10 10:06 AM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Steve Jackson]
Peter Sumner- Piano Technician Offline
500 Post Club Member

Registered: 12/09/07
Posts: 852
Loc: San Francisco
I've been reading the above posts and trying to think of a solution....
One line jumped out at me.....'the hammers have been perfectly fitted to the strings'....
After literally doing this exercise hundreds of times, and following techs who had 'fitted the hammers', I think it would be worth re-visiting this area....
It is easy to think the hammers are fitted...depending how hard the hammers are pulled up when testing...this testing should be done very lightly and when plucking the strings (in a very quiet environment) the slightest difference should be noted and the hammers filed until the fitting is complete....very easy to blow this off....and think that you are there....but it requires a high skill level to get this precise...
I'm not saying that the hammers do not need voicing....deep shoulder needling will relax the hammers and could make a huge difference.
Good luck..
_________________________
Peter Sumner
Concert Piano Technician



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#1470467 - 07/08/10 12:19 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Peter Sumner- Piano Technician]
BDB Online   content
Yikes! 10000 Post Club Member

Registered: 06/07/03
Posts: 21522
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PEBKAC
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#1470474 - 07/08/10 12:31 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: BDB]
Silverwood Pianos Offline
4000 Post Club Member

Registered: 03/10/08
Posts: 4190
Loc: Vancouver B. C. Canada
Originally Posted By: BDB
PEBKAC


????
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#1470505 - 07/08/10 01:19 PM Re: Kawai RX6 first 4 bi-chord notes sound metallic [Re: Silverwood Pianos]
UnrightTooner Offline
4000 Post Club Member

Registered: 11/13/08
Posts: 4940
Loc: Bradford County, PA
Problem Exists Between Keyboard And Chair
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