earlier_designs | gotharman.dk

Projects

Gotharman working on the microGothar firmware so many, many years ago...

PolySpaze MkII

4 voice polyphonic/multi-timbral synthesizer/sampler with analog filters, granular effects and sequencer.
-Stereo in and out.
-Morphing.

User Manual

SpazeDrum Blue

Still available as "Blue In Black"!

Analog drum synthesizer with 16 parts / 8 voices (4 analog/4 digital), based on dual SSI2144's.
-Each part can be configured as an analog drum sound or a digital synth/sampler with or without 2 analog filters.
-2 filters and 2 insert effects per part.
-2 output effects.
-Sample wav import (18 minutes/2047 samples).
-Sequencer with 16 note tracks and 64 knob tracks.
-64 random generators, 16 LFO's.
-Stereo out.
-Morphing.
-Optional analog outputs option.

User Manual

Anamono Xmini

Modular synthesizer with memory, exchangable analog filter, sampler, sequencer and granular effects.
-Audio in and out.
-Morphing.

User Manual

Zybraz

24 note polyphonic synthesizer.
-2 parts.
-Resonator oscillators, filters and effects.
-Morphable waveforms sine>tri>saw>squ>feed.
-Noise generator.
-8 filter types.
-8 effect types.
-2 envelopes and 2 lfo's per part.
-SOLID! Made only with high quality parts.

FX deFormer

Granular effects processor with sampler, sequencer and line/guitar input.
-Granular effects derived from Little deFormer 2
-Monophonic sampler
-10 minutes of sampling time
-512 presets

User Manual

SpazeBoard6 for LD3

Alternative firmware/analog board for LD3.
-6 monophonic parts with 2 oscillators (1 can play back samples), ring modulator, 2 analog filters (HPF+LPF), 1 digital filter, 2 insert effects, 1 VCA, 3 envelopes and 4 random generators.
-2 monophonic parts with 1 oscillator (can play back samples), 1 digital filter, 1 VCA, 3 envelopes and 4 random generators.
-8 parts for controlling external MIDI gear.
-16 global LFO's and 8 global LFO-trigged random generators.
-2 output effect processors.

User Manual

EuroBoard

Eurorack module for The Anamono X series analog FilterBoards. It is easy to replace the filterboard, to get new flavours in your eurorack. You don't need to own an Anamono X /Xmini for this to work in your Eurorack, but you must own a FilterBoard to install in it. These can be ordered below on this site.

If you order any FilterBoard together with a EuroBoard, this will, of course, be installed in EuroBoard before shipping.

Size: 22hp. Current draw: Up to 100mA, depending on filterboard.

duoSpaze

4 part duophonic/multi-timbral synthesizer/sampler with analog filters, granular effects and sequencer.
-Stereo in and out.
-Morphing.
-Filters and effects in Audio Matrix

Anamono X

Modular synthesizer with memory, 2 exchangable analog filters, sampler, sequencer and granular effects.
-Mono in, stereo out.
-Morphing.

User Manual

PolySpaze Model B

4 voice polyphonic/multi-timbral synthesizer/sampler with analog and digital filters, granular effects and sequencer.
-Stereo in and out.
-Morphing.

User Manual

Fuzion

Music Workstation with sequencer, synthesizers, samplers and granular effects.
-16 track MIDI sequencer with up to 8 audio tracks
-8 Synths/Samplers/percussion oscillators/resonators
-10 effects processors
-2x audio in, 4x audio out
-2x MIDI IN, 2x MIDI OUT
-8 note polyphonic synthesizer / 128 note polyphonic sequencer
-300 minutes of sampling time, max 6.144 samplings

User Manual

Little deFormer 2

Granular workstation with sampler, synth, effects processor and sequencer

User Manual

Biggar deForma custom design

Little deFormer 1 Special Edition

Little deFormer 1

The first deFormer prototype

Anamono Synthesizer

-Monophonic analogue feedback synthesizer with build in granulator/delay effects.

-2 oscillators with waveforms morphable from sine to triangle to saw to square to noise and with osc sync.

-2 analogue filters - 1 multimode (lpf, bpf, hpf) and 1 bpf.

-1 digital multimode filter.

-New Gotharman engineered analogue feedback circuit with g-RAY - NEW sound creating possibilities.

-Analogue VCA and overdrive - fully controllable.

-Fully programable and controllable 16-step step granulator - Delay/granulator times up to 1.5 second.

-Ring modulator, that can process both internal sounds and sound coming via the external audio input.

-External audio input lets you process any sound with Anamono's filters, g-RAY feedback circuit, granulator/delay, ringmodulator and analogue overdrive.

-2 envelopes and 2 step-modulators, all having 2 sets of settings, that can be morphed between, using any modulation source.

-2 LFO's with morphable waveforms and key-sync.

-256 preset memory locations.

-All parameters controlable with MIDI NRPN numbers - Many direct with MIDI controller.

User Manual

deMOON Synthesizer

4-note polyphonic Oscillators with continuously variable waveforms, wave-shape modulation, fm and pwm which works on all waveforms.
4 high quality unique sounding analog-modelled bpf/lpf/hpf/bpf8/add filters.
Granulator effect.
5 distortion types.
4 LFO's with continuously variable waveforms, waveshape modulation and rate modulation.
2 envelopes.
Filter random generator.
Various control sources for every parameter.
Note randomizer.
32-step step sequencer which is MIDI-syncable, has one note track, one velocity track and one controller track, has realtime transpose, and a keyboard (arpeggiator) mode, in which, you can gate and transpose the sequence via a connected MIDI-keyboard.
Storage of 128 sounds and sequences in eeproms. No need to worry about changing back-up batteries.
Direct MIDI-control of most parameters. Writes parameter name and value in display.
Boxed small and compact - easily portable.

User Manual

deMOON first edition

DIY deMOON's

Biggar deMOON prototype

miniProphet Synthesizer

-Completely analogue - no memory!

-Monophonic

-Build in MIDI interface that receives note on/off, velocity, pitchbender and modulation wheel data. Filter cutoff can be controlled by mod wheel or velocity.

-2 VCO's with sawtooth, triangle and square waveforms, pwm, sync and FM.

-2 filters, both LPF, one original Pro One filter and one Ensoniq Mirage filter. Has filter FM (Fxm). The outputs of the 2 filters are phase inversed to each other, to make it possible to do BPF effects.

-2 ADSR envelopes.

-2 LFO's

-Analogue feedback.

-Portamento.

-Power: 230Vac.

-Connections:

-MIDI in

-Audio out

miniProphet Eurorack

Vothar8

microVothar synthesizer

microGothar Duo synthesizer

microGothar 2 synthesizer

microGothar synthesizer

2 Oscillators with sync, fm, ringmodulator and pwm which works on all their 16 waveforms.
2 high quality unique sounding analog lpf/hpf filters.
Overkill distortion.
5 loop envelopes.
2 random generators.
Velocity control of filter cutoff and final amp level.
16-step step sequencer which is MIDI-syncable, is able to control 2 selectable parameters, has realtime transpose, and a keyboard (arpeggiator) mode, in which, you start/stop and transpose the sequence via a connected MIDI-keyboard.
Storage of 256 sounds and sequences in Microchip 24LC256 eeproms, which is guaranteed to retain data for at least 200 years! No need to worry about changing back-up batteries.
MIDI-control of 15 parameters.
Boxed small and compact � easily portable.

microGothar synthesizer Black

Space Eagle synthesizer

Audio demo

-2 oscillators with each 16 different waveforms, which are all affected by pwm. Pitchable noise. Oscillator sync, FM and ringmodulator. Portamento.

-4 x 24db lowpass ANALOGUE filters connected in parallel to each other. Each filter can be separately controlled, programmed and modulated. Possibility of inverting the output of 2 of the filters by 180 degrees, to create new strange sound-effects. Front panel controls: Filter 1-4 cutoff, reso, modulation source 1 amount, modulation source 2 amount, filter output levels. The external audio input pictured, was never activated, so it doesn't work.

-Modulation sources: Oscillator 2 can modulate oscillator 1 (FM) and the 4 filters (FxM). Other sources are: modulator1 (a 16 step step-modulator with glides and steps), modulator2 (a 16 step step-modulator with glides and steps), LFO1, LFO2, random generator 1, random generator 2, keyboard, velocity, midi-controller 1-17, 1 ADSR VCA envelope.

-Memory: 256 locations for storing sounds in EEPROM's - No back-up battery needed. All parameters can be edited and stored.

-MIDI data received (on selectable midi-channel): Note-on, Note-off, velocity, pitch-bend, controller 1-17.

Spaze Jupiter synthesizer

Audio demo 1

Audio demo 2

Duophonic Roland Jupiter-8 clone, build with original Roland IR3109 filter chips, and with a few extra's:

-Hi-Pass has added resonance, and can be modulated.

-Fully programable overdrive stage has been added to it's output section. This can also be modulated.

-Oscillators has some added Gotharman waveforms (16 in all).

EACH VOICE HAS:

-Key modes: Duo, split, dual, mono.

-2 oscillators with each 16 different waveforms, which are all affected by pwm. Pitchable noise. Oscillator sync, FM and ringmodulator. Portamento.

-One 12 dB hi-pass and one 24 dB low-pass (Original Roland Jupiter-8). Each filter can be separately controlled, programmed and modulated. Hi-pass has added resonance, compared to the original Jupiter-8.

-Original Jupiter-8 VCA stage build with Roland BA662's. It can be modulated and an overdive stage are added to it, which also can be modulated.

-Modulation sources: Oscillator 2 can modulate oscillator 1 (FM) and the filters (FxM). Other sources are: modulator1 (a 16 step step-modulator with glides and steps), LFO1, random generator, keyboard, velocity, midi-controller 1-17, 1 ADSR VCA envelope.

-Memory: 512 locations for storing sounds in EEPROM's - No back-up battery needed. All parameters can be edited and stored.

-MIDI data received (on selectable midi-channel): Note-on, Note-off, velocity, pitch-bend, controller 1-17.