Many of my issues were resolved by replacing the CA3080s after something probably shorted during the negative voltage regular replacement.Įdit edit: you can change the frequency of the oscillation with the filter cutoff frequency slider and the resonance seems to work. There’s probably more to do once I resolve this filter issue, but this issue is the one that currently confounds me. The filter worked prior to me unnecessarily replacing the negative voltage regulator on board one…in fact everything worked prior to that point (except oscillator b, but I think that has been fixed in the meantime, though I can’t quite tell with the loud filter overpowering everything). I’m just curious if the loud Filter could be caused by the tantalum or the SG3821 failing. I’ve replaced most active components in the filter section except for SG3821 (I just ordered CA3046 which is the modern equivalent of that chip) and I have yet to replace the 5.6 uf tantalum capacitor (awaiting electrolytic equivalents in the mail). Additionally, the master volume control seems to have no effect on the volume of the synth at the moment. Unfortunately, now the filter seems to only self-oscillate and it is very, very loud…there’s no way to turn it off and it over powers anything I do with the oscillators (which you can vaguely hear in the background). Then I put in new CA3080 chips at IC14 and IC27 on board two and it seemed to bring the filter back to life.
MIDIKIT FOR MOOG MG1 AND SONIC SIX GENERATOR
I replaced pretty much every transistor in the VCA/filter/articulator and ultimately when I threw in a new CA3080 (IC21 on board 2) I was able to get the correct sounds by turning on the Direct Output Mixer knobs (but that seemed to bypass the filter, articulator and contour generator which still didn’t work). Well, I must’ve shorted something at that point because when I turned the synth on after I could very faintly hear the synth functioning but it seemed the VCA had kicked the bucket. I successfully changed the positive voltage regulator which had failed and had read that it was best just to replace both because they would inevitably fail. It stems from me changing out IC11 on board 1 (the -v regulator). Audio signals may also be routed through the Moog filter and ring modulator via an external input.I’m having problems with the Filter section of the Sonic Six. The Sonic Six also features a ring modulator which allows a player to produce non-chromatic sounds. Each LFO can produce saw, reverse saw, triangle, and square wave outputs. Call me a heretic if you like, but I sometimes wonder why we make.
MIDIKIT FOR MOOG MG1 AND SONIC SIX PORTABLE
A mix control allows mixing of each LFO source, while voltage control of each LFO allows additional rate control not often seen in portable synthesizers. The pioneering Sonic 6 has a complex and intriguing background, featuring not only the synth industrys most famous name, Bob Moog, but also that of an unsung hero called Gene Zumcheck a shadowy figure now, but one whose contribution to synthesis deserves acknowledgement. The Sonic Six also features pink or white noise. One can adjust the temperament of the Sonic Six to play scales that have less than 12 notes per octave. The pitch of each oscillator can be controlled by dual LFO, one by contour, and the other by the other oscillator. Available waveshapes are pulse (variable), saw, and triangle. one oscillator takes high-note priority and one oscillator takes low note priority), monophonic (both oscs), or monophonic with a drone (one osc changes pitch, one does not). It can be set for duophonic, (two notes at a time. The Sonic Six is a two-oscillator duophonic synth. The Sonic Six features two VCOs with changeable waveform (sawtooth, triangle, square, pulse), one low-pass VCF, a VCA, two multimode LFOs for modulation and a 49-note keyboard.
The Sonic Six is also the only Moog synthesizer that featured built-in speakers rather than requiring the user to use an external amplifier. This feature was used by a number of synthesizer manufacturers of the time, however the Sonic Six was Moog Music's only product that incorporated this into its design.
The Sonic Six is mounted in its own briefcase the upper control panel folds and latches over the keyboard to ease transportation and storage. It was under this new brand that a new version of the Musonics Sonic V was released as the Moog Music Sonic Six. Moog Inc., moved the company to Buffalo, New York, and renamed it Moog/Musonics (which eventually was shortened to simply Moog Music). Interested in the marketing opportunity afforded by the Moog name, Waytena acquired R.A. The Sonic Six is the result of Bill Waytena, then the owner of synthesizer manufacturer Musonics, acquiring R.A.
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