Yamaha CS80

Hi Tom,
in my CSY-2 the board is named SK, and it's the VR3 poti ( see linked images, marked with a yellow arrow ).
Probably there is a difference between the SY and CSY models. As you can see on the
2nd picture everything is build with descrete components except the VCO module.
I think in the SY models there is probably more modularized stuff... 

http://www.blowmymind.com/CIMG2135.JPG
http://www.blowmymind.com/CIMG2136.JPG

Christof


----- Original Message ----- 
  From: Quazimodo 
  To: yamahacs80@yahoogroups.com 
  Sent: Tuesday, December 30, 2008 2:28 PM
  Subject: [yamahacs80] Re: SY-1 ... Happy New Year...!


  Hi Christof...

  Thanks for the reply. Would you by any chance know the poti's number
  (VR?)...? Looking at the circuits diagrams - I think the SM1 board in
  the SY1 and SY2 are very similar... there are 3 (possibly 4) presets
  mentioned in the manuals. VR1, 2 and 3 are mentioned in the
  calibration section - and I think VR4 is actually shown on the layout
  but not mentioned anywhere in the text...!

  But I can count 7 presets altogether on my board. So it might be
  either VR5, 6 or 7...?

  Cheers,
  TOM

  --- In yamahacs80@yahoogroups.com, "Christof Lorenz" <lochri@...> wrote:
  >
  > I own a CSY-2 that i calibrated yesterday.
  > There is a poti on one board where you can move the center cutoff
  frequency.
  > It could be in your case that your cutoff is too high so that you
  don't reach deep
  > enough frequencies and the resonance has nothing to resonate :-)
  > Christof
  > 
  > ----- Original Message ----- 
  > From: Quazimodo 
  > To: yamahacs80@yahoogroups.com 
  > Sent: Tuesday, December 30, 2008 2:28 AM
  > Subject: [yamahacs80] SY-1 ... Happy New Year...!
  > 
  > 
  > Happy New Year Guys...!
  > 
  > I have an SY-1 question... for any of you that have access to one.
  > 
  > I've noticed that on my SY the "Resonance" control doesn't really
  seem 
  > to do much. The "Cut Off Frequency" control makes a difference, but 
  > the "Resonance" control just seems to make the sound quieter at one 
  > end..!
  > 
  > I find that the Attack Bend - TONE switch makes more of an 
  > apparent "Resonance" difference than the actual "Resonance" control.
  > 
  > I am aware that Resonance might only be effective on certain presets, 
  > probably not meant to affect all patches, but this symptom runs 
  > throughout all the patches on mine. 
  > 
  > Can anyone please confirm for me that this is *normal* for the SY-1..?
  > 
  > Many thanks,
  > TOM
  >



   

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