OBERHEIM SYNTH

I don't think the OB-8 has individual voice boards, rather it has a 
big mother-board.  Don't even think about trying.    

The OBX-A boards are just a plug-in and a 8 or so screws, as I 
recall, no soldering.  You have to use the OBX-A boards, don't try 
anything else (unless someone corrects me and tells you you can use 
an OB-SX board.)Also, you have to make sure the OBX-A knows you have 
8 voices installed.  According to the service manual, you have flick 
a small toggle switch on the OBX-A to turn the voice on: "On the 
front of the OBXa [after you open up the top pannel] is a 8 position 
DIP switch.  This switch is used for voice selection, it is 
labled "VOICES".  If the switch is down (the open position) that 
voice is off.  Position 1 is for voice one, position 2 is for voice 
two, and so on." This is really easy to do so just make sure you 
flick the switch up.

Good luck in finding the 8th voice - but I would not be to worried 
about running the board in 7-voice mode.  If this is your only 
problem be thankful. I run 7 voices on my 8 voice OB-X most of the 
time.       


--- In oberheim@yahoogroups.com, "L8RDOOD" <nansbears@...> wrote:
>
> --- In oberheim@...m, "nelsonj_sce" <nelsonj_sce@> 
> wrote:
> > That's good to know they're all the same. To replace/install a 
> board, is it just a  matter of plugging it in or is there soldering 
> involved? Do you happen to know if an OB-8 board is the same as an 
> OBX-a board(can I switch them)? I'm asking this in case I cannot 
find 
> a board for the OBX-a, then maybe a OB-8 board will work the same. 
> Plmk if you know and thanks again!
> > All the voice boards are the same.  
> > The general number convention is voice 1-4 are on the bottom, 
> voices 
> > 5-8 are on top.  
> > Running as a 7 voice is no problem, but you will only get 3 
voices 
> > rather than four when you split the board (the other end of the 
> split 
> > will have 4 voices) , but when you double, some strange things 
> might 
> > happen - I have never tried it. 
> > 
> >  
> > 
> > --- In oberheim@yahoogroups.com, "L8RDOOD" <nansbears@> wrote:
> > >
> > > I'm somewhat of a novice so forgive me if my questions 
> > seem "ignorant". 
> > > I bought off Ebay quite awhile ago an Oberheim OBX-a. I got it 
> > cheap 
> > > because the seller said it was "dropping a sound". Not knowing 
> any 
> > > difference at the time, I thought it would be cool to have a 
> > vintage 
> > > synth to "restore" as a project. Well, due to several unforseen 
> > > situations, I wasn't able to get on the project so I put it off 
> for 
> > a 
> > > year. As I researched, I found the contacts needed to be 
cleaned 
> & 
> > the 
> > > keys leveled, among other things. Since my time for this was 
not 
> > going 
> > > to be like I thought, I decided to take it in to a repair shop 
in 
> > L.A.. 
> > >    It took quite a while but the repairman said it was missing 
a 
> > voice 
> > > board. To get all the work done, he wanted nearly double what I 
> > even 
> > > paid for it so I decided to pass on getting the board for now. 
So 
> > now 
> > > it's a 7 voice synth. I had the contacts cleaned anyways and I 
> will 
> > be 
> > > picking it up this week(minus the missing board). 
> > >    Here goes the questions: Are all the voices the same? If 
not, 
> > are 
> > > they numbered or named so I know what to get? Does anyone on 
this 
> > list 
> > > have any boards available to sell? Is this even worth my time 
to 
> do 
> > > this? If anyone has done this in the past, please help if you 
can 
> & 
> > > thanks for all your help in advance!
> > >
> >
>