Progue

RESONATOR

Three channel resonant filter inspired by Polymoog


FEATURES :

Resonator is a Polymoog inspired formant filter that is intended to emulate static resonances that are typical for acoustic instruments. Its three non-overlapping bands have frequency, gain and emphasis or resonance controls.

All three bands can be switched between Low pass, High pass and two Band pass modes (Band pass "notch").


SOUNDS:

ANALOG SYNTH BRASS (Deckard's Dream)

The same exact patch processed with Resonator. The parts are played separately (multi-track) with slight adjustments in the Resonator settings only (+reverb).

ANALOG SYNTH STRINGS (Deckard's Dream)

The same exact patch processed with Resonator. The parts are played separately (multi-track) with slight adjustments in the Resonator settings only (+reverb).

SPECIFICATIONS:

BAND RANGES

  • LOW frequency range: 60Hz-300Hz
  • MID frequency range: 300Hz-1500Hz
  • HIGH frequency range: 1500Hz-7500Hz

FILTER MODES

  • Low pass
  • Band pass
  • Band pass "notch"
  • High pass

CONTROLS FOR ALL BANDS

  • Cutoff Frequency (CF)
  • Emphasis (resonance)
  • Gain

COMMON CONTROLS

  • Dry Level
  • Resonance Level
  • Band mode switch
  • Bypass switch

IN/OUT

  • Mono input (1/4" phone jack)
  • Mono output (1/4" phone jack)

POWER

  • 12VDC (0.1A) power adapter (2.1mm DC jack)

DIMENSIONS

  • Enclosure 8" x 4" x 1" (203.2mm x 101.6mm x 25.4mm)

TECHNICAL DETAILS:

RESONATOR consists of two PCBs with both SMD and through-hole components. The smallest components are SMD's in 0603/SOIC package size. The professionally manufactured 4-layer PCB, which has the major part of the components, is connected via ribbon cable to the 2-layer PCB for the PSU and all the back panel connectors.

This DIY project is well suited for ENTRY LEVEL SMD -project. If you have only worked with through-hole components, SMD can seem like a challenge. Nevertheless, with the proper tools and a bit of practice, working with SMD's can be as easy as working with through-hole components. Check out our DIY tips!

The synthesizer can be built into a Hammond metal enclosure in which the backside needs to be drilled accordingly. While this is a cost-effective solution for standalone DIY gear, bundled with PCB front panel, it's also a good compromise between aesthetics, availability, and cost. A dedicated metal enclosure might be released in the future by JSI.

The PCB offers test points (TPs) for PSU rails. All the sliders are the same value for easier component sourcing. No calibration is needed for proper operation. The schematics are available for buyers only. Other documents are freely available for downloading.


DOWNLOAD:

BOM (PDF) PCB RefDes (PDF) Drill Guide (PDF)


FOLLOW US



JSI SYNTH © 2021