OBERHEIM SYNTH

Walter,

First, download the 1st and 3rd edition of the service manual. First edition is here:

http://launch.groups.yahoo.com/group/oberheim/files/OB-xa%20files/

3rd edition: http://www.synthfool.com/docs/Oberheim/Oberheim_OBXa/oberheim_obxa_service_manual_3.pdf

You don't need a scope to tune the boards. It is very straight forward if you follow the manual. 

To do this right, you need to perform the full service. The 5 and 15 volt piece always comes first followed by all of the adjustments on the bender assembly. Once those are finished, then you tackle the cards.For your first time, you might want to plan on 2 hours for the whole calibration. 

James




________________________________
 From: walter bonacci <walterbonacci@...>
To: oberheim@yahoogroups.com 
Sent: Tuesday, January 7, 2014 5:51 AM
Subject: [oberheim] Oberheim OBX-a voice tuning specifics
 


  
Hi,

Someone has the specifics for the voice of an oberheim obxa?
I would like to know which trimmer does what.

In theory is it possible to do the tuning by hear and without an oscilloscope?

Thanks,
Walter