Electro Harmonix Mini-synthesizer
Country: USA
Weight: n/a
Dimensions: n/a |
trend price : 400€ |
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Electro harmonix Mini-Synthesizer (1980)
Model EH 0400
Basic monophonic synthesizer with a superb compact design and a membrane keyboard, similar concept found on EDP Wasp.
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KEYBOARD portable 25 membrane keys with no velocity but the IMPACT SENSOR circuit which opens filter to major pressure.
Synth bottom is made out of cheap cardboard which is a total shame.
The EHX synth features 7 sliders potentiometers, 6 two-ways switches and a built-in audio speaker.
Back panel terminal connectors:
- audio signal output
- master tuning.
Power supply is a 9V external PSU or 2 x 9V batteries.
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VOICE monophonic single analog oscillator structure.
A voice is composed by a 1 VCO pulse + 1 suboscillator (1 octave lower) which is obtained from divider structure, while octave function switches the VCO to 2 octaves below.
FILTER the VCF is resonant (Q switch) and the 2x switch steps the filters 1 octave up.
EFFECT VCF phase function activates a phase shifting on the sound.
ENVELOPE a single EG control on the cutoff filter: the START and STOP sliders set the lower and higher frequencies range at key down and up.
LFO a very basic modulation on the VCO pulse rectangular width (PWM).
MAINTENANCE after some pressures (and some years) the keyboard usually has some issues: it is necessary to refurbish the contacts using some homemade tricks or directly redisigning a new cardboard.
RELATED FAMILY:
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Mini-synthesizer Mk2 - with red script : adds an analog delay feature and an external filtering on the VCF, but it is the same machine.
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Mini synthesizer APP (ios / android) - 2016. Virtual version with some new features VIDEO |
AUDIO DEMO
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original brochure
M.Matthews
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-analog
-design
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- reliability
-limited sound
-vintage expensive
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nice, but...
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REVIEW " love the design, nice vintage object! bad news: sound is not so compelling, unplayable keyboard and membranes maintenance are major drawbacks."
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all snapshots, sounds, texts copyright Polynominal.com / Eric Pochesci
Electro harmonix Mini-synthesizer 2 out of 5 based on 11 ratings.
price €300