As an example, it's like this (where w is white, B is black, and X is a dead key): starting at middle C - wBwBwwXwBwBwwBwBwwXwBwB.etc. The biggest issue is that on the two bottom keyboards, the first black key of each set of three black keys won't work. The organ is very good shape with a only a couple of cosmetic flaws. The organ is in a storage space and I had to use photographs I had sitting around, so sorry the pictures aren't that great. I believe the original lesson tape is in the player, but I can't remember. Also has a built in cassette player/recorder for practicing with and recording yourself.

Has built in rhythms and various effects such as reverb and tremelo among others. The top keyboard is an Orbit III synthesizer. Very cool vintage organ from 1971 with three keyboard sets and bass pedals. It is unclear when manufacture ended.Wurlitzer Model 4037 Organ with Orbit III Sythesizer for sale. 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.

Wurlitzer orbit organ