Xpantastic!

Nice demos there Andy.
The CEM chips labels are 3374 for the dual vco and 3372 for the vcf chip, i 
think you will be able to find the 3372 filter chips quite easily on ebay, 
but the dual vco chip is harder to find- i think they do pop up on ebay from 
time to time, but i think thats going to be your best bet for those, also 
check some of the vintage parts suppliers:
www.synthparts.com
http://www.vintageplanet.nl/
I just checked and synthparts have them in stock, they also have the HS3140C 
dac in stock which is another hard to find part.. 

My tech buddy built some replacement display boards for the xpander, check 
it out:
http://www.lenham.clara.net/sound/xpander.html 

Hope that helps! 


> Hello, finally got hold of an xpander last week, absolutely love it. Some of my first sounds out of it here: http://soundcloud.com/t1b/sets/xpander/ 
> 
> Im not really a vintage chap but I make exception for the XP, always amazes me that no-one has ever really topped it in the 25 years it has been out. I guess the andromeda came close but since its not a desktop synth and looks like a mid 90's car stereo Im ruling it out. 
> 
> Anyway, Ive a few questions: 
> 
> CEM's- anyone know of anywhere with a few spare VCO and filter chips. Is that all I should be stocking up on or is there anything else prone to faliure? 
> 
> OS- Im not on the most recent OS (think Im on 1.0 and 1.2), everything is running perfect so Im tempted to leave as is- is there anything Im missing out on by not upgrading? Was it just a bug fix upgrade? 
> 
> Manual: I have a PDF I can print though I was wondering if anywhere stocks printed & bound manuals? 
> 
> Cheers, 
> 
> Andy/tIB/sonofprent 
> 
>