Find great deals for MOOG Concertmate Mg-1 Analog Synthesizer – Vintage Mg1 Realistic S. Shop with confidence on eBay!. I pulled my Concertmate MG-1 synthesizer out of storage for my next Arduino project (to be described later), only to find that it wasn’t working quite right. The MG-1 was manufactured by Moog Music for Radio Shack for their Concertmate line of casio-like keyboards. However, the MG-1 is a true Moog, somewhere.
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Therefore it is true that the Poly tones are not “faded out” by the Fall time release contour setting when a key is released. There is a headphone output as well as a set of stereo phono rca plugs for output and “input”.
Who Played This Instrument? Due to the fact that this keyboard was marketed to a home-keyboard crowd, the design uses bright color graphics and a simplified terminology. Second, both Rogue oscillators share the concertmaate waveforms and octave range selectors, whereas on the MG-1 there are separate selectors for each.
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It can produce sawtooth, concertamte and pulse waveforms, concertmte the oscillators are detunable and syncable. I measured the inputs to the CA with an oscilloscope and found they all seemed normal. All signs pointed to a problem with the CA amplifier chip, which was somehow amplifying a big DC signal. The Contour settings can only affect Polyphony while a key is pressed due to the Polyphonic gate design. It is a lot like the strap-on Moog Liberation in its design and architecture and also looks and sounds very much like the Moog Rogue.
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Infew electronic musical instruments had the MG-1 combination of paraphonic poly section and monophonic synthesizer in one instrument. Polk for providing information. Sounds of the MG Retrieved from ” https: Against these limitations, the Polyphony is total, meaning all 32 keys can sound all at once.
In the schematic below, op-amps U10A and U10B feed the differential output signal into concertmat amplifier. For other uses, see MG1 disambiguation.
You need to be a member in order to leave a review. There are separate tuning knobs for the TGs and the polyphonic section.
It is also somewhat infamous in analog synth circles for having conceftmate polyurethane foam insulating the interior which did not keep well over time, turning into a black sludge which clogs the various moving parts in the synth so much so that entire replacement switches and faders can be bought on eBay, specifically for this synth. The Contour settings can only affect Polyphony while a key is pressed due to the Polyphonic gate design.
Here is a table highlighting some of the differences pointed out by a user between the Concertmare and Rogue.
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The synthesizer’s features aren’t labelled using the usual synthesizer nomenclature, instead using more “laymen friendly” terms such as “Tone Source” for the oscillators, “Contour” for the envelope with “Rise Time” for Attack Time and “Fall Time” instead of Decay or Release Time.
Second, both Rogue oscillators share the same waveforms and octave range selectors, whereas on the MG-1 there are separate selectors for each. The synthesizer also featured a pair of pass-through RCA jacks, which allowed users to mix radio or records into the final live synthesized sound output. Unfortunately there is no pitch wheel or modulation wheel.
The second problem was that when I set the contour for an attack and decay, the note got louder and softer, but as the note got softer it was replaced with a buzz at the frequency of oscillator 1. Polyphony – Monophonic plus fully polyphonic divide-down organ sound. In conclusion, I succeeded in fixing my MG-1 and getting that lovely, rich Moog sound.
Panel Layout The synthesizer’s features aren’t labelled using the usual synthesizer nomenclature, instead using more “laymen friendly” terms such as “Tone Source” for the oscillators, “Contour” for the envelope with “Rise Time” for Attack Time and “Fall Time” instead of Decay or Release Time. Pin 5 of the receives the contour signal to provide the attack and decay when you press a key.
Although there are stereo plugs, they both had the same mono output. Unique to the MG-1 is a slider on the far right side of the keyboard which controls the volume of a simple divide-down polyphonic organ sound.
This allows the creation of Saw- and Ramp- waves, as well as asymmetrical Triangle waves and unusual trapezoids, not otherwise found through modulating with the LFO alone.