Roland

Jupiter-8

Synthesizer

Main Details
Maker Roland Brand
Function
Additional Model ID JP-8
Channels/Tracks
  • 8 × Voice
Form Factor Keyboard
Signal Path Analog Hardware
Made In Japan
Dimensions
(H × W × D)
Weight 21.5 kg
Notes The Jupiter-8 is an 8-voice polyphonic analog synthesizer. Each voice features two VCOs with cross-modulation and sync, pulse-width modulation, a non-resonant high-pass filter, a resonant Low-pass filter with 2-pole (12 dB/octave) and 4-pole (24 dB/octave) settings, an LFO with variable waveforms and routings, and two envelope generators (one invertible).
Features include adjustable polyphonic portamento and a Hold function for infinite sustain of notes and arpeggios. A versatile arpeggiator can be synchronized with external equipment by using the proprietary Roland DCB interface, clock input via CV jacks on the rear panel, or one of the aftermarket MIDI kits from Encore or Kenton. An assignable bender can be used to control pitch or filter frequency.
From the factory, the JP-8 could store 64 patches. Patches could be stored to, or loaded from, a standard analog tape/cassette. The Encore JP8MK MIDI kit doubles the patch memory to 128 and enables the JP-8 to store and recall patches over a MIDI connection, using a computer with sysex utility software.
The Jupiter-8 includes balanced stereo XLR outputs as well as unbalanced 1/4" outputs. In addition to monophonic and polyphonic modes, the Jupiter-8 includes a unison mode, in which all 16 oscillators can be stacked into a single monophonic patch.
Throughout the production of the JP-8 there were several changes. Starting at serial #171700 the D/A converter on the Interface board was changed from 12-bit to 14-bit. This change was made mainly to improve tuning stability. The problem with the 12-bit digital-to-analog converter on the original JP-8 is that it could cause the autotune to be inaccurate in some instances. Some say to avoid these early JP-8's while others say they haven't experienced tuning problems. Starting at serial #242750 the LEDs of the display were changed to brighter ones. Starting at serial #282880 the JP-8 came standard with a DCB port. These newer JP-8's may be referred to as JP-8A's. DCB, or Digital Control Bus, was Roland's pre-MIDI interface that allowed the JP-8 to talk to other DCB enabled hardware, such as the Roland MC-4 and MC-8 microcomposers. Previous JP-8's had the option of having the OC-8 retrofit installed to give it DCB capability.
Connections
Phones 1/4" Phone Jack (6.35mm)
Output Lower XLR Balanced
Output Upper XLR Balanced
Output Lower 1/4" Phone Jack (6.35mm)
Output Mix 1/4" Phone Jack (6.35mm)
Output Upper 1/4" Phone Jack (6.35mm)
Ext Control Hold 1/4" Phone Jack (6.35mm)
Ext Control Portamento 1/4" Phone Jack (6.35mm)
Ext Control VCA 1/4" Phone Jack (6.35mm)
Ext Control VCF 1/4" Phone Jack (6.35mm)
Ext Control Arpeggio Clock 1/4" Phone Jack (6.35mm)
Ext Control Arpeggio Clock DIN
Highest Note Output Gate 1/4" Phone Jack (6.35mm)
Highest Note Output CV 1/4" Phone Jack (6.35mm)
Tape Memory Save 1/4" Phone Jack (6.35mm)
Tape Memory Load 1/4" Phone Jack (6.35mm)
DCB Other
Controls
Parameter: Keyboard
Range: 5 Ocatves (C0 to C5)
Parameter: Volume
Control Type: Rotary Pot
Range: 0 to 10
Parameter: LFO-1: Rate
Control Type: Slide Pot
Range: 0 to 10
Parameter: LFO-1: Delay
Control Type: Slide Pot
Range: 0 to 10
Parameter: LFO-1: Waveform: Triangle
Control Type: Momentary Push Switch
Parameter: LFO-1: Waveform: Sawtooth
Control Type: Momentary Push Switch
Parameter: LFO-1: Waveform: Square
Control Type: Momentary Push Switch
Parameter: LFO-1: Waveform: Random
Control Type: Momentary Push Switch
Parameter: VCO Mod: LFO
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCO Mod: ENV 1
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCO Mod: VCO 1
Control Type: Momentary Push Switch
Parameter: VCO Mod: VCO 2
Control Type: Momentary Push Switch
Parameter: PWM: PW
Control Type: Slide Pot
Range: 0 to 10
Parameter: PWM: PWM
Control Type: Slide Pot
Range: 0 to 10
Parameter: PWM: Env 1
Control Type: Momentary Push Switch
Parameter: PWM: LFO
Control Type: Momentary Push Switch
Parameter: VCO-1: Cross Mod: Manual
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCO-1: Cross Mod: Env 1
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCO-1: Range
Control Type: Rotary Pot
Range: 32' / 16' / 8' / 4' / 2'
Parameter: VCO-1: Waveform: Triangle
Control Type: Momentary Push Switch
Parameter: VCO-1: Waveform: Sawtooth
Control Type: Momentary Push Switch
Parameter: VCO-1: Waveform: Square
Control Type: Momentary Push Switch
Parameter: VCO-1: Waveform: Pulse
Control Type: Momentary Push Switch
Parameter: Sync (VCO 1 to VCO 2)
Control Type: Momentary Push Switch
Parameter: Sync (VCO 2 to VCO 1)
Control Type: Momentary Push Switch
Parameter: VCO-2: Range
Control Type: Rotary Pot
Range: Low / 32' / 16' / 8' / 4' / 2' / High
Parameter: VCO-2: Tune
Control Type: Rotary Pot
Parameter: VCO-2: Waveform: Triangle
Control Type: Momentary Push Switch
Parameter: VCO-2: Waveform: Sawtooth
Control Type: Momentary Push Switch
Parameter: VCO-2: Waveform: Puslse
Control Type: Momentary Push Switch
Parameter: VCO-2: Waveform: Noise
Control Type: Momentary Push Switch
Parameter: Mixer
Control Type: Rotary Pot
Range: VCO-1 to VCO-2
Parameter: VCF: Mode: HPF / BPF
Control Type: Momentary Push Switch
Parameter: VCF: Mode: LPF / BPF
Control Type: Momentary Push Switch
Parameter: VCF: Freq
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCF: Res
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCF: Env-1
Control Type: Momentary Push Switch
Parameter: VCF: Env-2
Control Type: Momentary Push Switch
Parameter: VCF: Env
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCF: LFO
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCF: Kybd
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCA: Env-2 Level
Control Type: Slide Pot
Range: 0 to 10
Parameter: VCA: LFO
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-1: Polarity: (Positive)
Control Type: Momentary Push Switch
Parameter: ENV-1: Polarity: (Negative)
Control Type: Momentary Push Switch
Parameter: ENV-1: A
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-1: D
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-1: S
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-1: R
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-1: Key Follow
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-2: A
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-2: D
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-2: S
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-2: R
Control Type: Slide Pot
Range: 0 to 10
Parameter: ENV-2: Key Follow
Control Type: Slide Pot
Range: 0 to 10
Parameter: Balance
Control Type: Rotary Pot
Range: Lower to Upper
Parameter: Bender
Control Type: Momentary Push Switch
Range: On / Off
Parameter: Glide: Time
Control Type: Rotary Pot
Parameter: Glide: Portamento
Control Type: Momentary Push Switch
Parameter: Glide: Glissando
Control Type: Momentary Push Switch
Parameter: Arpeggio: Rate
Control Type: Rotary Pot
Parameter: Arpeggio: Range
Control Type: Momentary Push Switch
Range: 1 / 2 / 3 / 4
Parameter: Arpeggio: Up
Control Type: Momentary Push Switch
Parameter: Arpeggio: Down
Control Type: Momentary Push Switch
Parameter: Assign: Unison Detune
Control Type: Rotary Pot
Parameter: Assign: Solo
Control Type: Momentary Push Switch
Parameter: Assign: Unison
Control Type: Momentary Push Switch
Parameter: Assign: Poly-1
Control Type: Momentary Push Switch
Parameter: Assign: Poly-2
Control Type: Momentary Push Switch
Parameter: Hold
Control Type: Momentary Push Switch
Parameter: Key Mode: Split-1 2-4
Control Type: Momentary Push Switch
Parameter: Key Mode: Split 2 2-4
Control Type: Momentary Push Switch
Parameter: Key Mode: Whole
Control Type: Momentary Push Switch
Parameter: Panel Mode: Lower
Control Type: Momentary Push Switch
Parameter: Panel Mode: Upper
Control Type: Momentary Push Switch
Parameter: Patch Preset
Control Type: Momentary Push Switch
Parameter: Bank: A to F
Control Type: Momentary Push Switch
Parameter: Number: 1 to 8
Control Type: Momentary Push Switch
Parameter: Manual
Control Type: Momentary Push Switch
Parameter: Protect Write
Control Type: Momentary Push Switch
Parameter: Tape Memory
Control Type: Momentary Push Switch
Parameter: Tune
Control Type: Momentary Push Switch
Parameter: Master Tune
Control Type: Rotary Pot
Parameter: Bend: VCO
Control Type: Slide Pot
Range: 0 to 10
Parameter: Bend: VCF
Control Type: Slide Pot
Range: 0 to 10
Parameter: Bend: VCO-1
Control Type: Latching Push Switch
Parameter: Bend: VCO-2
Control Type: Latching Push Switch
Parameter: Bend: Wide
Control Type: Latching Push Switch
Parameter: LFO-2: VCO
Control Type: Rotary Pot
Range: 0 to 10
Parameter: LFO-2: VCF
Control Type: Rotary Pot
Range: 0 to 10
Parameter: LFO-2: Rate
Control Type: Rotary Pot
Range: 0 to 10
Parameter: LFO-2: Rise
Control Type: Rotary Pot
Range: 0 to 10
Parameter: LFO-2: (VCO / VCF Actuate)
Control Type: Momentary Push Switch
Parameter: Bender

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