[sdiy] Aftertouch on YS-25D -> YC-25D?

[Florian Anwander]

Hi Bob

sounds like you speak of a Yamaha organ: YC-25D (C instead of S)

No further help from my side, because I owned only a YC30, which didn't 
have the aftertouch (but a left/right movement pitch modulation)

Florian

Bob Weigel wrote:

> Has anyone ever worked on one of these things?  I was figuring maybe a 
> blown light but the light is good.  Then I see the way this 
> thing..supposedly...works... it's got a thin metal strip and felt pad 
> under it all the way along the keyboard it appears to me.  I see how 
> it's supposed to work.  I think...the problem is that the foam as become 
> too flimsy.  And thus when you push on a key there isn't enough BOW in 
> the metal to create a length contraction that pulls the hings on the 
> piece that covers/uncovers the light path.
> But there's another strangeness.  When I move it manually I get a wah 
> effect instead of vibrato!  The fixed vibrato works.  The pot for the 
> touch is attached as it should be to that fixed vibrato pot and when you 
> hit the 'vibrato mute' it mutes the wah effect for sure.  Very strange.  
> Has anyone worked on one of these or do you have a working one to let me 
> know if it's supposed to vibrato or wah? :-)  I assume vibrato since 
> that's what it says but it also bends the note a bit so you can do a 
> manual vibrato by vibrating your fingers I guess :-) -Bob
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