An 8-voice polyphonic analog synthesizer
with a 61-note keyboard
. The flagship
of the Jupiter
line, manufactured between 1980
The JP-8 features 2 syncable VCO
s per voice. VCO1 has a 4 octave
range and is switchable between sawtooth
and square waveforms
. VCO2 replaces square wave with a noise generator
. The oscillators
can be modulated by either or both of the LFO and ENV1.
A simple mixer
is available for adjusting the oscillator
levels, with a slider
for cross-modulation. PWM
has its own slider for modulation level, and it can be switched between LFO, ENV1 and manual.
section offers a low-pass resonant VCF
switchable between 12 and 24dB
/octave (2-/4-pole). It has controls for frequency
& resonance, and can be modulated by one of the envelope generators, LFO or keyboard tracking. Sliders for controlling modulation amount are available for all the sources
A non-resonant high-pass VCF is also included, but it can't be modulated and only has a single slider for adjustment.
, sawtooth, square and random
) waveforms. There are typical controls for rate
, as well as modulation amount for the VCO and VCF.
Two ADSR envelope generator
are included. The polarity
of ENV1 can be inverted
, and ENV2 controls the VCA
The keyboard can be split
. In the dual mode, the polyphony is dropped to 4 voices, allowing two instruments to be played at once.
4 modes of play are available. Solo
is a monophonic
mode with 2 oscillators. Unison
uses all the VCOs dividing them between all played voices, which means whopping 8 VCOs at once when playing a single note! Poly 1
is the normal 8-voice polyphonic mode, while Poly 2
cuts off the release of all playing notes as the user lifts their hands off the keyboard.
64 user patches
can be stored in JP-8's internal memory
. It can also hold up to 8 "patch presets"
, which can contain keyboard splits and modulation settings.
Other features include an arpeggiator
* with external sync, a bender
with an exceptionally wide range and flexible modulation routings, a programmable hold
function and external input
to the VCF and VCA.
is featured on the JP-8, but third party retrofit kits
are widely available and relatively easy to install
* can be heard set to the sample/hold in the 80s hit Rio by Duran Duran
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