No presets, menus or anything like that, of course. Overall, it's a nice big sound, but I miss all the other organ voices from the previous ranges. The rhythm unit is a joke, you have go search a little to find a more unrealistic unit (er, that would be the Eminent/Solina one!).
Monophonic, of course, but only two octaves. The Orbit is good fun, but the 625 only has the cut down version. Ensemble Strings are very mushy, Wurlitzer never did get the smooth strings that you found on Eminents or Kawais, but the strings do blend with the tibias quite well. Percussions like Piano are par for the course for this age of instrument. Nice, but not as smooth as the older Wurlitzers. It is unclear when manufacture ended.Tibias are a bit bright on the 625/650/950 series. There appear to have been two models, the Orbit II and the Orbit III (there does not seem to have been an Orbit I) the differences between them are not known. Generally, there was a bank of organ-style tab switches to the left of the keyboard for preset selection, and a group of sliders or knobs to the right controlled the mix of the synth with the organ sound, as well as allowing a few parameters to be varied. The keyboard was not velocity or aftertouch sensitive, and there were no performance controls. The standard installation employed a 25-key, C-to-C mini keyboard, positioned above the organ's two full sized manuals, as can be seen in the photo. Preset sounds were hard-wired and were generally typical of the era they varied depending on the model of organ that the synth was incorporated into. The Orbit's architecture was very basic, with a single VCO, a low pass filter of some type, a VCA, and an AR envelope generator, along with various bits of dedicated modulation circuits. (Compare to the Moog Satellite, which was incorporated into organs built by Thomas but was also available as a stand-alone unit.)
The Orbit was not made or sold as a stand-alone synth it was only available incorporated into various models of Wurlitzer electric organs.
Courtesy of Ī monophonic preset synthesizer offered by the organ maker Wurlitzer in the early 1970s. Wurlitzer model 605 organ with Orbit III synth (top manual) installed.
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