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Gleeman | Pentaphonic (Clear)
The Pentaphonic is a five-voice polyphonic analog synthesizer released in 1982. It was designed by brothers Al and Bob Gleeman and featured three DCOs for a stable and juicy analog sound. The Pentaphonic was in the running against such classics as the Sequential Prophet-5, Moog Minimoog and Polymoog, and the Oberheim 4-Voice. But the Gleeman Pentaphonic (and the Pentaphonic Clear) are extremely rare! Only about 30 Pentaphonics and 20 Pentaphonic Clears were ever made.
In addition to three oscillators per voice, the Pentaphonic has a four-pole lowpass resonant filter with an ADSR envelope, a VCA with ADSR, an LFO, and built-in chorusing (slow or fast). There is also a handy 300-note capacity sequencer on-board for simple real-time recordings that you can play along with. There's also a cool X/Y joystick for controlling pitch and mod effects. Some models also had a Presetter added which gave it 100 patch memories and eight digital waveforms.
The Clear model is unique because of its transparent plexiglass case. It was also designed to be strapped on like a guitar for live use. The standard models had a boring black case and a built-in speaker. Their demise has been blamed on the rise of the digital revolution as led by the Yamaha DX7. They went out of production in 1983, but the Audities Foundation had bought, restored and built some since. Audities-built Clear versions have green circuit boards.
|LFO||One with sine wave modulation; routes to VCO, VCF or VCA|
|Engine Detailed||3 DCO's|
|Filter (VCF)||4 dB/oct with cutoff freq, resonance and EG amount. Has dedicated ADSR EG to filter.|
|Envelope (VCA)||ADSR envelope|
|Recording||300-note realtime "sketch-pad" sequencer|
|Extra info||Only about 30 Pentaphonics and 20 Pentaphonic Clears were ever made. The Clear model has a transparent plexiglass case. It was also designed to be strapped on like a guitar for live use. Some models also had a Presetter added which gave it 100 patch memories and eight digital waveforms.|
|Produced:||1982 - 1982|
|Legend:||Obvious||Y: Yes, N: No, N/A: Not Applicable|
|VCO||Voltage Controlled Oscillator||DCO||Digital Controlled Oscillator|
|LFO||Low Frequency Oscillator||Sub||Sub Oscillator|
|VCF||Voltage Controlled Filter||VCA||Voltage Controlled Amplifier|
|Velocity||As with a piano, the harder you hit a key, the louder the sound, unlike most organs which always produce the same loudness no matter how hard you hit a key.||Aftertouch||Pressing a key after you activated it. Channel Aftertouch, no matter which key, it will send a Channel message. Poly Aftertouch, sends the pressure per key instead of the whole channel.|
|Values for OSC, LFO, Filter, Envelope are per voice unless stated otherwise.|