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