xaoc-devices/zagrzeb
ZAGRZEB
Visualization filter_response
Capabilities 2
- Multimode Filtermultimode-filter
- 4-pole (24dB/oct) state variable filter with five frequency responses: LP24, HP24, and three BP variants (h18l6, h12l12, h6l18). Three outputs available simultaneously.349
- Stereo Processingstereo-processing
- True stereo filter with independent left/right filter cores and voltage-controlled stereo spread. Mono input creates faux stereo via a multi-stage phase shifting network.349
Jacks 11 — 5 in / 6 out
| Name | Signal | Voltage | Description |
|---|---|---|---|
| Inputs (5) | |||
| FM1 | cv | — | CV input for cutoff frequency modulation. Sensitivity controlled by attenuverter knob from -2 oct/V to +2 oct/V.349 |
| FM2 | cv | — | Fixed 1V/oct CV input for cutoff frequency modulation. Not calibrated but provides fairly accurate 1V/oct tracking.349 |
| Left/Mono In | audio | — | AC-coupled left channel or mono input. When a mono signal is patched here the module automatically creates a stereo signal via a phase shifting network.349 |
| Right In | audio | — | 349 |
| Spread | cv | — | Animates the stereo image by moving left and right filter cutoffs in opposite directions. Scaled at 1/10th the sensitivity of FM2. 0V has no effect; positive/negative CV swings the two sides in opposite directions.349 |
| Outputs (6) | |||
| BP Left Out | audio | — | 349 |
| BP Right Out | audio | — | 349 |
| HP24 Left Out | audio | — | 349 |
| HP24 Right Out | audio | — | 349 |
| LP24 Left Out | audio | — | 349 |
| LP24 Right Out | audio | — | 349 |
Parameters 4
| Name | Type | Range | Behavior |
|---|---|---|---|
| BP Config | switch | — | Three-position switch selecting among three band pass filter response variants: h18l6, h12l12, and h6l18, corresponding to asymmetric +18/-6dB, symmetric +12/-12dB, and asymmetric +6/-18dB band pass slopes.349 |
| Cutoff Freq | knob | 10Hz – 20000Hz | Controls the cutoff frequency of the filter across the entire audio range. The two CV inputs (FM1 and FM2) also modulate this frequency.349 |
| FM1 Attenuverter | knob | -2oct/V – 2oct/V | Attenuverter with center detent controlling FM1 input sensitivity. Range is ±2 oct/V, twice as wide as the fixed FM2 input, facilitating extreme sweeps while retaining shallow modulation near center.349 |
| Resonance | fader | — | Controls the degree of resonance. The illuminated slider shaft indicates how much the peaks of the output signal exceed the peaks of the input signal. Zagrzeb cannot self-oscillate by design; the resonance range is trimmed so the clipping point is rarely reached.349 |
Firmware history 0 versions
No firmware history recorded.
References 2
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[349]
Xaoc Devices Zagrzeb Stereo Multimode Filter Manualmanual● verified 2026-05-14
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[350]
Xaoc Devices ZAGRZEB product pageproduct_page● verified 2026-05-14