Yamaha CS80

Hi Doug,
Hope you are well.
Do you currently have any IG00153 VCOs for sale? I need one.
 

Best Regards

Andy Collins
Antech Systems
Unit 3A Hackhurst Lane Ind. Est.
Lower Dicker
East Sussex
BN27 4BW
UK.
tel: +44(0)1323 442035  fax: +44(0)1323 840003 mob: 07833313251
email: musicalfix@...
web: www.Antech-systems.com
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-----Original Message-----
From: synthparts <synthparts@...m>
To: yamahacs80 <yamahacs80@yahoogroups.com>
Sent: Wed, 16 Oct 2013 2:12
Subject: RE: RE: Re: [yamahacs80] CS80 tuning



  
    
                  

So the problem is with the IG00153 VCO chips you think? I still have a few in stock if you want any... 
 


---In yamahacs80@yahoogroups.com, <yamahacs80@yahoogroups.com> wrote:


Hi. Thanks for your reply. On your advice I did replace the caps on the S/H board which got rid of some unwanted crackling. Then  went back and re-calibrated the power supply, S/H and KAS boards. Which I had already done, but the tolerances are small and some were out. Also the transposition gate zeroing on each voice shifted a bit (0mv between cp6 and EK). The tuning was then better, but still three or four voices were 20 or 30 cents flat on the lower octaves on the 8 and 16 feet ranges. Eventually I tried swapping the VCO chips around and found the fault moved with the VCOs. So I think I cannot improve it any more.