MATRIXSYNTH: Oberheim OB-XA SN 813504 - 8 Voice 120 Patch Model w/ Midi

Friday, September 17, 2021

Oberheim OB-XA SN 813504 - 8 Voice 120 Patch Model w/ Midi

via this auction "This is priced firm. This synth need just a little TLC on some specific sections, and it ready for the prime time. Even with the Issues described it can still make music as I still use it till the day it goes in the box for sale. It can take 10 to 15 mins to warm up before AutoTune is pressed. After that It is very stable.

All the Bushing are great and no clicks keys, No pot has any scratchiness so thats good. All Knobs and Buttons work aside from the issues described below.
Midi Works as well and the Tape Input works as I put in the factory sound (Minus a few).

The 120 patch are not fully loaded but It can hold that much memory I erased a few towards the end to make room for custom patches. All voices pass Tuning but one of the voice slots fails the tuning.

ALL 8 Voice cards work and the Auto Tune test it Failed Voice card 7. Voice card 7 works if you switch its position to any other slot. So Slot 7 Controlled by the Disable switch means that the switch went bad. To Fix this it should be the 8 Voice Dip Switch.

The Performance section only effect 4 voices out of 8 so that may be Cable harness problem. Aside from those very specific issues every thing else works fully. The Midi works and is what I use all the time. Aside from the mentioned issues every thing works. This is a Big Heavy Synth and will be boxed up well."

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