Synth DB

The Ultimate Synthesizer Database

Filter on ALL, SYNTH, DRUM, SAMPLER or MISC

Total list currently 2405 items in 330 Brands

Gleeman | Pentaphonic (Clear)

Description

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.

BrandGleeman
ModelPentaphonic (Clear)
DeviceSynth
TypeKeys
Engine TypeAnalog
EngineDCO
Voices (max)5
Oscillators3
LFOOne with sine wave modulation; routes to VCO, VCF or VCA
Engine Detailed3 DCO's
Filter (VCF)4 dB/oct with cutoff freq, resonance and EG amount. Has dedicated ADSR EG to filter.
Envelope (VCA)ADSR envelope
Recording300-note realtime "sketch-pad" sequencer
Keys37
Key typeKeys
VelocityNo
AftertouchNo
Extra infoOnly 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.

Manuals, patches etc.

Facebook

If you like to discuss or talk about synths in all forms (including VST and modular), you are welcome to join the Facebook group "The Hard, The Soft and The Modular".

My music

Interested in music from "Synthisfactory" or "SX Instrumentals"?

Visit our website.

Contact Us

Did you find an error in the info or do you have an item to list? Go to the Contribution page, fill out the form and I'll see what I can do.