Author Topic: Upper Register Sustain  (Read 334 times)

Offline WurlieNewbie

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Upper Register Sustain
« on: November 09, 2019, 07:24:39 PM »
Hey guys.  The last few notes on the upper register of my 200 are not dampening and are sustaining too long.  I read a quick fix about turning the damper screw in the back counter clockwise to fix this. 

However, upon closer inspection, the last few notes don't have dampers!  Will turning the screw still work?

Thanks.

Offline OZDOC

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Re: Upper Register Sustain
« Reply #1 on: November 09, 2019, 07:33:29 PM »

The last 5 notes have no dampers. So altering the screws will not alter the sustain. These 5 notes are intended to sustain - the duration of sustain on these notes is generally fairly short.
In some reed and tine pianos the makers add extra mass to the mounts or resonators of these upper notes in order to get the sustain up to an acceptable level.
David
Co-author, "Classic Keys: Keyboard Sounds That Launched Rock Music" (Coming November, 2019)

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Offline pianotuner steveo

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Re: Upper Register Sustain
« Reply #2 on: November 10, 2019, 06:02:40 AM »
Yes, even acoustic pianos are like this too, but it's far more notes. People complain of this all the time.
There is nothing that can be done.
1960 Wurlitzer model 700 EP
1968 Gibson G101 Combo organ
1975 Rhodes Piano Bass
1979 Wurlitzer 206A EP
1980 Wurlitzer 200A EP
1980 Wurlitzer 270 Butterfly Grand
2000 Yamaha acoustic piano
2004 Hammond XK3
2009 73A Rhodes Mark 7
2009 Korg SV-1 73
....and a few guitars...

Offline WurlieNewbie

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Re: Upper Register Sustain
« Reply #3 on: November 10, 2019, 12:55:22 PM »
Wow.  That's a shame because the notes in question (G# and A) are sustaining particularly longer than the others. Oh well, the joys of vintage gear!  Thanks, guys.

Offline OZDOC

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Re: Upper Register Sustain
« Reply #4 on: November 10, 2019, 05:13:10 PM »
All is not lost.
The excellent sustain of these notes indicates that they are good reeds with excellent coupling to the mounting chassis.
There are a couple of things you can try - however, I've never tried them, so report back to the forum if you do.
The easiest would be to get a lump of Blu-Tac or chewing gum and stick it on the base of the reed a little out from the screw. The theory is to provide a small amount of damping permanently to the reed without significantly altering the reed weight.
Another possibility is to get some thick felt and cut a strip that you can lay across the bases of the last 5 reeds. You may need to tape this in place and weight it slightly.
A more difficult experiment would be to take the reed out and put a very thin shim of bond paper between it and the chassis. This may get you to a point where the coupling to the chassis is sufficiently impaired that the note has a shorter ring. But getting the reed back correctly aligned in the pickup and placed so it is still in tune could be a challenge.
David
Co-author, "Classic Keys: Keyboard Sounds That Launched Rock Music" (Coming November, 2019)

Learn about the book: http://www.classickeysbook.com/
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Offline pianotuner steveo

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Re: Upper Register Sustain
« Reply #5 on: November 11, 2019, 09:36:54 AM »
David, won't the shim break the ground connection? Or alter it enough to cause an audio issue? ( the reed bolt should still ground it, but not perfectly)
1960 Wurlitzer model 700 EP
1968 Gibson G101 Combo organ
1975 Rhodes Piano Bass
1979 Wurlitzer 206A EP
1980 Wurlitzer 200A EP
1980 Wurlitzer 270 Butterfly Grand
2000 Yamaha acoustic piano
2004 Hammond XK3
2009 73A Rhodes Mark 7
2009 Korg SV-1 73
....and a few guitars...

Offline OZDOC

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Re: Upper Register Sustain
« Reply #6 on: November 12, 2019, 05:37:32 PM »
Good question. I've never needed to try any of the suggestions I've made above. I would think that the downward force on the fastener head would need to be so great to ensure good resonance of the reed that the electrical connection would be certain.  David
Co-author, "Classic Keys: Keyboard Sounds That Launched Rock Music" (Coming November, 2019)

Learn about the book: http://www.classickeysbook.com/
Follow us on Facebook: www.facebook.com/ClassicKeysBook/