Roland JX-3P

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Roland JX-3P
Roland JX-3P by Roland
Synthesis type: Analog subtractive
Polyphony: 6 voices
Oscillators: 2 DCOs per voice
Multitimbral: 1
VCF: 1 resonant lowpass, 1 highpass
VCA: 1 ADSR
LFO: 1 sine/square/sh/noise
Velocity sensitive: No
Aftertouch: No
External control: MIDI
Memory: 32 presets/32 user patches
Onboard effects: chorus
Produced: 1983-1985
Original price: US$1395

The Roland JX-3P emerged in 1983 as the first MIDI-capable synth produced by Roland. Its architecture is more advanced than the Juno series synths produced around the same time. Both machines use the same interval-timer DCO technology and use the Roland IR3109 lowpass filter. It is a polyphonic, 61 key synthesizer with sawtooth, 50 and 10% pulse waveforms, and a noise generator. It performs as a nice inexpensive vintage synth that produces some great sounds, especially strings and brass. It has 32 factory programs and user memory for 32 programs, and a 128-step, six-part built-in sequencer that can be triggered by sync voltage from external devices such as the Roland TR-808 drum machine. Instead of analog sliders and knobs, the JX-3P used a series of buttons and a single data slider for selecting parameters. For users who wanted better real-time sound control, Roland sold a separate unit that plugs into the synth called the PG-200, also made by Roland. The JX-3P was also produced as a rackmount unit called the MKS-30. While the JX-3P could handle only either midi or the Data from PG200, the MKS-30 can handle both data at the same time.

There is an eprom version available at Roland, which enables note velocity in MIDI-IN mode.

There is an addon kit available from Inque (see link below), which enables parallel usage of PG200 and MIDI and also introduces parameter control via MIDI controller data.

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