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Roland JX-3P

 

 

 

roland jx3p synthesizer

  audio demo trend price :300-400€
manual demo video comments

ROLAND JX-3P (1983)
Programmable Preset Polyphonic Synthesizer


Affordable analog polyphonic synthesizer with memory and Midi interface.


multi waveforms

logo

info KEYBOARD (weight: 10 Kg / dimension: 912 (W) x 325 (D) x 115 (H) mm ) 61 keys.

Main panel features 38 buttons, 3 sliders and a data entry slider.
On the left side there is a pitch bender with a 3-range switch (octave set) and a button for LFO modulation retrig.


Back panel terminal connectors:
- footswitch sustain input
- clock input for sequencer
- stereo output jacks (at 3 impedance levels)
- tape interface
- Midi interface.


 

edit VOICE main core is a 8-bits CPU Intel 8051 (also some 8031 versions ) manages up to 6 voices of polyphony based on subtractive synthesis.

STRUCTURE
: each JX3p voice is composed by 2 DCO digital controlled oscillators.


DCO



edit OSCILLATORS the DCO1 / DCO2 are a bit different,
DCO table sumup:


  DCO1 DCO2
range 16' 8' 4' 16' 8' 4'
waveforms saw / pulse /square saw / pulse /square /noise
tuning - fine + coarse
cross mod - 2 modes
volume mix balancing DCO1 Vs DCO2 balancing DCO1 Vs DCO2

oscillators

 

filter FILTER based on IC IR3109 - VCF is multimode similar to bigger model Juno-60:
1- lowpass resonant at -24 dB lowpass
2- static highpass non-resonant.


filter trimmer



adsr ENVELOPE a single EG model 4-segments ADSR controls 2 sections:
1- VCA amplifier with switch between EG / gate mode
2- VCF filter
Although EG is shared, both VCA and VCF have an individual EG polarity inversion.


lfo LFO a single delayed oscillator (shapes: square, saw and sample & hold) and 2 destinations:
1- DCO pitch
2- VCF cutoff

Modulation can be set to free mode or directly retriggered pushing the LFO "modulation" button.



edit EFFECT single stereo analog chorus circuit has some BBD model Panasonic
- MN3009
- MN3101
.



sequencer SEQUENCER each patterns contains up to 16 steps (max 128) with some edit facilities like Fill, Note insert (up to six) and "Pause step" - tempo can be synched to external analog trigger by a +5V pulse signal.


sequencer




midi MIDI
implementation accepts basic messages like NOTE ON or OFF and system cannot use both Midi and PG-200 programmer at the same time ... the big rip-off.



memroy MEMORY:
- 32 RAM patches
- 32 ROM patches
If you have some troubles storing your sounds, you should check the internal battery (model CR1) which is soldered to the board

roland jx3p internal

 


midi
MODIFICATION some third part company like ORGANIX produced a new set of hardware OS that expands the original Midi protocol adding a full spectrum of control changes for each parameters plus Midi Sysex handling.


jx3p vst

 

 

midi RELATED FAMILY:

pg200 PG-200 is the dedicated controller. Wired with a custom six pins cable, the parameters data are quicks but not recordable.
mks30 MKS-30 rackmount version - some technical enhancements but it does not sound quite the dreaded 80017A found on Juno-106
roland jx-03 boutique JX-03 boutique, a digital destop module with optional minikeys keyboard remake from 2015. Should be a limited edition VIDEO

 

 

effet VST PLUGIN / SAMPLED VERSION there are some free pack / vst and commercial samples set:

  name price link demo
EFM Oddse Vst Plugin Jv3P free
effet video JX3p vst
audio oddy UVX 3p samples $$ effet  ARP Odyssey



demoAUDIO DEMO

demo electricity (all jx but drums)
demo Noise and LFO test
demo internal sequencer
demo demo sent by RWA MUSIC



cloud sound Soudcloud JX-3p

beethoven cloud2 cloud1


 

video YOUTUBE VIDEO CLIP SELECTION

JX-3P Sound Demo Adventures with the Roland JX-3P Roland JX-3P and PG-200
Sound Demo Adventures with PG-200

roland jx3p

audio demo and cat mimi





manual
ROLAND JX3P USER MANUAL

 

 

 




manual
SERVICE MANUAL

 

 

 

memroy

OS It is reporter that some later OS supports the velocity input parameter, but Jx3p can be updated only by installing EPROMS.

 

 

 

filter
wiseman tips:

The forth hidden LFO waveform "Noise Random" is available only by direct JX3P edit (not by PG) pushing "4"

 

 

 

 


filter trimmer


 

original scan

 

 

 

 

original scan

 

 

custom
Custom model

 

 

original scan
custom laptopmodel

 


WEIRD VIDEO:
A guy destroys a JX3p


related
not for the faint-hearted!

 

 

 

Roland JX-3P for sale

Roland JX-3P for sale
CHECK OUT EBAY OFFERS

 

 

 

lfo waveforms vcf filter


manual

- filters
- sequencer
-memories


manual

- cannot use Midi and pg200 at same time
- EG


comment

REVIEW "Jx3p never unleashed any passions, but it is a good polyphonic for modest budget and Midi is handy! programming is a bit uncomfortable but sequencer is just fun."

 
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COMMENTS

 

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all snapshots*, sounds, texts copyright Polynominal.com / Eric Pochesci
*but "desktop jx3p" "orange juice"- unknown authors.

roland jx3p 4.0 out of 5 based on 32 ratings. price €300