New JX2044 Analog Polysynth – Sneak Preview
Synthesist adamstan shared this sneak preview of a new synth that he’s developing, the JX-2044.
The X-2044 is an original 8-voice bi-timbral analog synthesizer design, with a voice architecture that combines a DCO section inspired by Roland JX-8P with a 2044 filter.
Specifications:
- 2 DCOs per voice based on JX-8P, but with addition of PWM. DCO A features sawtooth, pulse and noise, while DCO B has triangle on the last switch, instead. Waveforms can be switched independently and mixed.
- Cross Mod (AM) – the same circuit as in JX-8P
- 3 ADSR envelopes per voice, with shape switchable between exponential and linear, RTZ switch and adjustable keytracking (with note number affecting envelope speed relatively to C4 (60).
- 3 LFOs per voice with seven waveforms – triangle, sine, square, rising ramp, falling ramp, random and noise. LFOs can be switched to mono mode, or work polyphonically with adjustable keyboard tracking, which is very useful e.g. for PWM patches
- 4 pole resonant low pass filter built around CoolAudio’s V2044 chip. Filter can self-oscillate and also has adjustable keyboard tracking.
- Filter FM using DCO B as a source.
- 1-pole master HPF per part similar to the one in JX-3P
- Each layer has its own FX processor with following blocks:
- Resonant filterbank with two modes:
- VP-330 “Human Voice” section emulation (with two presets)
- Polymoog resonator emulation
- Stereo Chorus with three presets – “JX Slow” and “JX Fast” corresponding with “I” and “II” settings from JX-8P, and the third mode is “Stringmachine”, which uses three delay lines modulated with dual phase-shifted LFOs.
- 4 stage phaser
- Delay / Reverb – switchable between the two. Delay has its own modulation LFO with adjustable rate and amount. Reverb output also can be pitch-modulated.
- Resonant filterbank with two modes:
- Modulation routings are arranged in a way similar to JX-8P, meaning that modulation amounts are adjusted independently at destinations and that’s also where you select source for each destination.
“The synth is currently in prototype stage,” he notes. “I’m planning to make it rackable desktop module – in a form factor similar to bigger Behringer desktops. It will be 5U when racked.”
You can follow the project development at Gearspace.
