tiptop-audio/z2040
Z2040
8HP 4-pole 24dB/oct low-pass VCF with a discrete core modeled on the SSM2040 chip (used in the Prophet 5 Rev 2). Features a configurable audio VCA (input or output), VC resonance, FM input with VC-FM index, and self-oscillation capability as a sine-wave VCO.267
Capabilities 3
- Configurable Audio VCAaudio-vca
- Onboard audio VCA configurable via PCB jumpers to be disabled, placed at filter input (default), or placed at filter output; controlled by VC-GAIN input.267
- Low Pass VCFvcf-lowpass
- 24dB/oct 4-pole low-pass filter with discrete SSM2040-derived core; cutoff sweepable via FM and VC-FM inputs.267
- Self-Oscillating VCOself-oscillating-vco
- With no input and resonance at maximum, self-oscillates as a low-distortion sine-wave VCO tracking ~7 octaves with Volta calibration.267
Jacks 6 — 5 in / 1 out
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (5) | |||
| FM-IN | cv | -2.5V to 2.5V | 267 |
| IN | audio | — | 267 |
| VC-FM IN | cv | -2.5V to 2.5V | 267 |
| VC-Gain | cv | ≤5V | 267 |
| VC-RES | cv | -2.5V to 2.5V | 267 |
| Outputs (1) | |||
| OUT | audio | — | 267 |
Parameters 5
| Name | Type | Range | Behavior |
|---|---|---|---|
| FM | knob | — | Attenuates the FM-IN signal, which controls the cutoff frequency modulation depth.267 |
| GAIN | knob | — | Sets input gain to the filter independently of VCA position. Has three operating regions: MIN to just before 0dB (SSM2040-like behavior, low distortion), 0dB (resonance-gain-compensation active), and just past 0dB to MAX (non-linear clipping and distortion). At maximum with high resonance, output can reach 21Vp-p.267 |
| RESONANCE | knob | — | Sets an offset to the VC-RES input. At maximum with no input signal, the filter self-oscillates producing a low-distortion sine wave.267 |
| VC-FM | knob | — | Attenuates the VC-FM IN signal, which modulates the magnitude (index) of the FM signal via a VCA on the FM line.267 |
| VCA position jumper | jumper | — | Configures the onboard audio VCA to be disabled, placed at the filter input, or placed at the filter output. Default from factory is Input VCA.267 |
Firmware history 0 versions
No firmware history recorded.
References 2
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[267]
Tiptop Audio Z2040 VC-Filter v.2 Manualmanual⚠ verified 2026-05-06 · manufacturer changed since last verified
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[268]
Tiptop Audio Z2040 product pageproduct_page⚠ verified 2026-05-06 · manufacturer changed since last verified