Roland Alpha Juno

Roland Alpha Juno

Infobox_synthesizer



image_caption =
synth_name = Roland Alpha Juno
synth_manufacturer = Roland
synthesis_type = Analog Subtractive
polyphony = 6 voices
timbrality = Monotimbral
oscillator = effectively 3 DCOs per voice
(pulse, saw, square and noise, plus suboscillator)
filter = Analog 24dB/oct resonant
low-pass
attenuator = ADSR envelope generator
lfo = triangle
portamento = yes
ext_control = MIDI
memory = 128 patches
(64 user, 64 preset)
fx = Chorus
dates = 1985
price = £575 (JU-1)/£799 (JU-2)
keys = 61 (JU-1)/73 (JU-2)
velocity = No (JU-1)/Yes (JU-2)
aftertouch = Yes
split = No

The Roland Alpha Juno series of keyboards were analog polyphonic synthesizers with digitally controlled oscillators manufactured by Roland Corporation in 1985.

Two models were released: the Alpha Juno (JU-1), and the Alpha Juno 2 (JU-2), which added one octave of notes, a cartridge slot and touch-sensitivity. Alpha Juno synthesizers were notable for their reduced user interface compared to other synths of the day, with a single 'Alpha Dial' replacing many sliders and knobs. The keyboard features MIDI in, out and 'thru', mono, stereo and headphone sockets. It also supports an external footpedal controller, and tape backup.

The MKS-50 is a rack-mount version of the Alpha Juno. It has the same synth engine and architecture, with some added features like 16 programmable chord memories, the ability to store velocity, volume, panning, de-tune, portamento and other similar parameters within each patch you create.

The Alpha Juno is notable for its unusual combination of the stability of digitally controlled oscillators with the arguably more pleasant quality of analogue filters. The JU-2 was used to create the Hoover sound, a notable sound used in jungle and rave music. Artists who have used the Alpha Juno include The Prodigy and a great many other rave acts.

The Roland programmer PG-300 offers complete control over all MIDI editable parameters of the Alpha Juno, the Alpha Juno 2 and the MKS-50. More recently, software has been written for Microsoft Windows and Apple computers which allows graphical editing of Juno patches through MIDI.

External links

* [http://www.gordonreid.co.uk/vintage/alphajuno.html Gordon Reid's Vintage Synths - Alpha Juno history]
* [http://www.alphadial.org/ The Alpha Dial]
* [http://homepage.mac.com/synth_seal/html/ajuno1.html Alpha Juno specs]


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