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CONCERTMATE MG-1 PDF

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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This page was last edited on 27 Octoberat Second, both Rogue oscillators share the same waveforms and octave range selectors, whereas on the MG-1 there are separate selectors for each. Images from Perfect Circuit Audio. This is the benefit of not having the standard pitch- and mod-wheels. What a cool synth. The square wave based polyphony section is described as a “cheesy organ sound”[2] by some, and well-used by others.

Concertmate MG-1 Production period: I studied it and the schematic, and my first guess was that there was a DC offset going into the CA amplifier, resulting in an amplified DC signal in the output. The Liberation and Rogue have to route both through concertmaet Mod Wheel with the same amount level.

In the schematic below, op-amps U10A and U10B feed the differential output signal into the amplifier. The Liberation and Rogue have to route both through the Mod Wheel with the same amount level. Here is a table highlighting some of the differences pointed out by a user between the MG-1 and Rogue.

Both models share exactly the same plastic casing, but are different machines in many respects. Fortunately, by some bizarre twist of fate, I happened to have one in my rather small box of parts.

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 concert,ate. The main problem with the MG-1 was a loud click a bit like a kick drum when I pressed or released a key.

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The MG-1 in the Present Still, this synthesizer is sought-after as an inexpensive way to get the famed “Moog Bass” sounds. 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. 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.

Second, both Rogue oscillators share the same waveforms and octave range selectors, whereas on the MG-1 there are separate selectors for each. As with many analog synthesizers, the MG-1’s resale price is slowly rising as alternatives and working instruments become less common, and buyers and sellers congregate online.

This signal controls how much the inputs are amplified. All of the sound-generating features come together in a mixer allowing the levels for the two monophonic tone sources, noise, bell tone and polyphony to be adjusted independently. The CA is not a normal amplifier but an operational transconductance amplifier, an unusual amplifier where the current on a control input controls the amplification of the input signal more info. Unfortunately, the CA is no longer being manufactured and is hard to obtain.

Concertmage MG-1 User Group. As with many analog synthesizers, the MG-1’s resale price is slowly rising as alternatives and working instruments become less common, and buyers and sellers congregate online. Very basic and easy to use, this is a nice cheap way to get your hands on Moog sounds! The rest of the modulation, including the sample-and-hold, will affect the Polyphonic Signal via the filter section. The multiple notes of polyphony feed into the single filter, giving a paraphonic result.

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Although there are stereo plugs, they both had the same mono output. I opened up the MG-1 and adjusted this, but unfortunately it made no difference at all. They expected people to hook it up cnocertmate their home stereo systems. There are separate tuning knobs for the TGs and the polyphonic section. Infew electronic musical instruments had the MG-1 combination of paraphonic poly section and monophonic synthesizer in one instrument.

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Unfortunately, I didn’t get any output at all. It is a lot like the strap-on Concwrtmate Liberation in its design and architecture and also looks and sounds very much like the Moog Rogue. The upper concfrtmate is concertmare sound generation, filtering, and amplification, while the lower board has the power supply, keyboard, control, and polyphonic sound. The Realistic Concertmate MG-1 is an analog synthesizer manufactured by Moog Music in and sold by Radio Shack from to under their “Realistic” brand name.

In addition, the contour input showed it was picking up some crosstalk from the oscillator 1 trace that runs next to it, and this was being amplified into the buzzing noise. Also, like the Liberation, it had a simple polyphonic section much like a simple organ. Animoog Filtatron Model You need to be a member in order to leave a review.

Infew electronic musical instruments had the MG-1 combination of paraphonic poly section and monophonic synthesizer in one instrument. The output goes into the master volume control, and then to the synthesizer outputs. Therefore it is true that the Poly tones are not “faded out” by the Fall time release contour setting when a key is released.

TG1 Tone Generator 1 has available sawtooth and square waveforms, and TG2 has sawtooth and pulse waveforms. If there’s a DC offset between the input mg1- 2 and 3, there will be an amplified DC offset at the output. Additionally there is a simple Ring-Mod effect called ‘Bell’. All signs pointed to a problem with the CA amplifier chip, which was somehow amplifying a big DC signal.