Quote:
Originally Posted by PeteMOBie  Question for Clusterchord.
Your friend has opened his OB-SX many times, as have I. It wouldn't be to tweak the manual tuning trim pots on the oscillators by any chance would it? Or am I the only one needing to retune every now and then? |
hi Pete. two things you can/need to do.
in case you havent changed the capacitors on your board, like ever since the synth was made, you should asap. electrolytics typically have life expectancy of 18 - 20 years. after that they dry out, either completely or become unstable, changing values.
this makes the synth absolutely impossible to tune or retain the tune for a longer period of time. new caps on them voiceboards and PSU, besides remedying this, also lower the noise, restore the transients, and make the warm-up period extremely shorter. my re-capped OBXa needs less than a minute now. when i bought it it took 5 to 10.
don't use cheap ones, but rather a brand name like nichicon or panasonic audio.
second: in order to make the trimmers easier to position (old trimmers get dirty and lose the continous, smooth range i.e. jumping over areas..) , and make the synth more stable overall (esp if u move it arround) u should replace them with multiturn trimmers. not all, but VCO1 and VCO2 tune, and perhaps the HI RANGE trimmers too. i want to replace the VCF cutoff trimmers too bcs im having trouble calibrating all 8 filters to exact same position.
parts are not expensive, but there's some time and solder required to do this. ive done the capacitors few yrs ago, and am getting ready to do the trimmers just now.
cheers
Quote:
Originally Posted by Rangoon The OBSX would become a hot keyboard if Encore Electronics (Tony Karavidas) would make a MIDI interface for it. Generally with his stuff you can port in patches through system exclusive into the new memory which is on the kit (which replaces the old memory circuits). This means that you could port in sounds from the OBX, which in turn means that the OBSX becomes a fully variable synthesizer....albeit the variability has to come from a "mother keyboard" (the OBX). |
phuuuk id love that. id get a SX right away for my gigs, and leave the big oberheim at home. however, knowing Tony, and how slow he develops things bcs of his day job (he promised a new eeprom version of the JP8 retrofit some 3 or 4 yrs ago, i stopped holding my breath), i doubt it. he did tell me while he was developing the new OBXA retrofit that it will have ability to receive and TRANSMIT !! all midi controllers from his front panel pots in the next update. that would be just awesome.. we can only wait..