Vintage Synth Repair

And here:

http://www.organservice.com/scgi-bin/SearchPart.pl

or

http://www.wdgreenhill.com/AtoZ/semiconductors.htm

Daniel Forro


On Jul 8, 2012, at 11:53 PM, colinbutterfield@... wrote:

> Hi Guys,many years ago(34 to be exact) I built the Clef Products  
> String Ensemble from articles in Practical Electronics.This was one  
> of the best analogue string machines I have ever heard but I sold it  
> shortly afterwards to raise money to build the Clef Piano.I now have  
> the urge to go back to my youth and build it again.I've managed to  
> get hold of the old magazines and nearly all of the parts but the  
> ones giving me problems were the BBD chips and the top octave  
> generator.I've now got the TDA1022 BBD's but can't find  the  
> AY-1-0212 top octave gen.Does anyone out there have one or know  
> where I could source one.As a last resort I could use the one out of  
> the piano but I don't really want to keep swapping it about.Could I  
> slave the O/P from the piano tone gen to the string ensemble via an  
> extra set of buffers to the divider ccts as I am thinking of housing  
> both instruments in the same cabinet using the same keyboard with an  
> extra set of key contacts.Ideally I would like it to have its own  
> tone generator but that depends on if I can get the chip.Any help  
> gratefully accepted Regards Colin.