My designs are indicated with a superscript¹
Modifications of existing designs are indicated with a superscript²
|Synthesizer Restoration and Builds|
|4U 200 Series Format Joysticks1 New||Aries modules|
|4U 200 Series Format Oakely midiDAC2 New||Buchla and 100/200 Series 4U modules Photos|
|4U 200 Series Format Slant Cabinet1||M.E.M.S. Project 100/200 Series 4U modules|
|AMF 775-A Educational (Analog) Computer||Fonitronik mh21 Triple Resonator|
|4U 248 MARF V2 HW & SW Mods2||Loft 450 Delay Line/Flanger|
|Blomman BLM 277 Signal Delay Unit||Milton Sequencer|
|DJB-005 Voltage Monitor¹||Moog Micromoog|
|Behringer Model D rack mount²||Moog modules Photos|
|Thomas Maximus VCO||Moog Sonic Six synthesizer|
|Thomas Henry SN-Voice||Moog Source|
|4U 200 Series Format 24 dB VCF and Clock²||Oberheim Mini-Sequencer (MU repackage)|
|5U Chaotica||Oberheim SEM|
|5U Benjolin²||PAiA 2720 Synthesizer|
|Jürgen Haible "solina" triple chorus||PAiA 4700 Synthesizer Modules|
|Ian Fritz DoubleDeka VCO²||Papareil Labs Quantix-8²|
|5U E950 Circuit Bent VCO||Roland System 100 - 140 module|
|CGS-35 Steiner VCF²||SCI Model 700 Programmer|
|Thomas Henry mega percussive synthesizer||SCI Model 800 Sequencers|
|5U E560 deflector shield||Serge|
|Barton dual quantizer²||Synton 3000 series modules|
|DJB-021 pan-crossfade²||WASP synthesizer|
|5U 266 source of uncertainty²||YUSynth Dotcom Mini-Moog VCF|
|5U E580 sampling mini-delay||Photos, Videos, and Sound Samples|
|Ian Fritz 'threeler' 3rd order VCF²||Photo album|
|DJB-020 tap tempo LFO¹||Video and Sound samples|
|5U 208 pulser-crossfader-timbre generator²||Hammond M-3 tonewheel generator|
|My visit with the Raymond Scott Electronium|
|5U Modular Synthesizer Information||Organs and more|
|Module listing by cabinet||Hammond B-3 and Leslie 142|
|Custom modules design files and photos¹||Hammond M-3 tonewheel generator Photos|
|Purchased modules and modifications²||Hammond vibrato scanner module²|
|Dotcom modules||Hammond zinc whiskers Photos|
|Main cabinets & power distribution¹||Organs, keyboards and amplifiers|
|Side cabinets & power distribution¹|
|Tektronix 760A Stereo Audio Monitor||Electronics Projects and Repairs|
|AMF 775-A Educational (Analog) Computer|
|Reference Information||Bell Sound Systems RT-205 & BT-205IB|
|Modular synth tips||Electronic project information|
|Parts and DIY information||Electronic repairs and tips information|
|Making PCB brackets||Fender Tremolux Restoration|
|Module Conversions||Sony TA-E88 Restoration|
|440 Hz sine wave reference oscillator¹||Synthesizer XY laser²|
|Power supply sequencing¹|
|PT2395 delay module²||5U ComputerVoltageSource Module|
|Vactrol measurements||CVS eight channel module¹|
|CVS 2x16 LCD display¹|
|Related Musical Projects||CVS four channel module (PSIM software compatible)¹|
|Circle machine sequencer¹||CVS Kurzweil ribbon controller¹|
|MIDI 88 note keyboard²||Synthmodules.com PSIM and SpeakJet²|
|MIDI bass pedals¹||CVS and PSIM I/O expansion module¹|
|MIDI processor¹||CVS and PSIM Programs¹|
|SpeakJet speech synthesizer²||Arduino-based ComputerVoltageSource¹|
5U Modular Synthesizer
My modular synthesizer now consists of 127 modules including Analog Metropolis, Barton Musical Circuits, Blacet, Bridechamber, Catgirl Synth, ElectricMusicStore, Encore, Flight Of Harmony, Ian Fritz, Jürgen Haible, Rob Hordijk, Larry Hendry, Magic Smoke Electronics, Moon Modular, MOTM, Natural Rhythm Music, Neil Johnson, Oakley Sound Systems, Synthcube, Synthesizers.com, Synthmodules.com, YUSynth, and about two dozen of my own designs.
|5U Side synthesizer modules index||Reference|
|Design files and photos for my custom modules¹||Design|
|Information, mods, and photos for purchased modules²||Design|
|Parts and construction information||Reference|
|MP3 samples of some of my favorite patches||Sounds|
Here is a painting of my modular synthesizer that my son gave me.
5U Modular CV Keyboard
I rebuilt an ARP-3604 keyboard with a wood cabinet and updated electronics.
5U Modular Cabinets and Power Distribution
I built a 19" rack cabinet (30 modules and 2U standard rack) and a four stack of wood cabinet (96U). I later replaced the 19" rack cabinet with a four stack wood side cabinet (36U+10MU).
|Info & photos of my initial 19 inch 5U rack cabinet¹||Reference|
|Info & photos for 5U power-on delay¹||Design|
|Info & photos for 5U rear AC mains module¹||Design|
4U 200 Series Format Modular Synthesizer
I built a small cabinet for my initial 200 series modules. Much like my 5U system, it grew significantly so I built this 36U slant cabinet
|36U 200 Series slant cabinet¹||Reference|
5U ComputerVoltageSource Module
I designed the ComputerVoltageSource module
using an AtomPro28. Features include:
8 analog inputs (0 to 10 volt with 0 to -5 volt offset at 10 bit resolution)
8 analog outputs (0 to 10 volt at 12 bit resolution)
3 digital inputs
MIDI in / out
I2C expansion (for additional inputs and outputs)
2x16 LCD display.
|Info and photos for the ComputerVoltageSource display¹||Design|
|Information and photos for a four channel version¹||Design|
|Information and photos for a dedicated ribbon controller¹||
Synth Display Modules
I built an external display using a 2x20 LCD module with MIDI or serial input and three display modes.
I built two dedicated displays for my programmable PSIM (2x8 LCD) and ComputerVoltageSource (2x16 LCD) modules.
|Info and photos for the ComputerVoltageSource display¹||Reference|
MIDI Bass Pedals
I built a set of MIDI bass pedals using Hammond
organ pedals and an AtomPro24 controller. Features
Normal, Mono, and 'Sticky" modes (sticky=note held until next note played)
Normal, One-Shot, and 'Sticky" arpeggiator modes
5 built-in arpeggiator sequences and a user-recordable 100 note sequence
Normal, -1 and +1 octave select
MIDI in merge
Internal or MIDI clock
External LCD note display
88 Key MIDI Keyboard
I built an 88 key MIDI keyboard from a salvaged Kurzweil Ensemble Grand Mark III digital piano. I used the original keyboard controller and built a custom wood cabinet.
I built a MIDI processor which is self-powered and provides multiple transformations.
Specific continuous controller transforms
A440 Reference Oscillator
I designed a 440 Hz sine wave reference oscillator using only two 8 pin DIP components.
Hammond Vibrato Scanner Module
I built an external electro-mechanical vibrato and chorus using a Hammond Organ scanner and delay line. A small DC motor and speed controller varies the vibrato frequency.
I built the AVR Synth PCB to have a small format synthesizer but never completed this project.
Synth Controlled Laser Light Module
My first laser was a modified Ramsey Electronics laser light (LLS1) with CV control of the motor speed. I built an AVR plug-in that replaces the 555 timers to interface to my synth 5 volt CV levels. Later I built a full X-Y laser for synthesizer CV control.
PAiA Fatman Mods
My son has a PAiA Fatman and we enhanced it with a number of modifications. Some of the modifications were from various sites on the internet and some I designed. I consolidated all the modifications into a single document. Modifications include hard sync, lower frequency range, separate VCO attenuators, sub-octave generators and attenuators, ring modulator and attenuator, LFO filter modulator, and separate VCO tuner output.
Organs, Keyboards, and Amplifiers
I have information and photos of my various keyboards, amplifiers, Hammond organs, and Leslie speakers.
|Keyboard and organ studio layout||Reference|
Electronic Projects and Restorations
This is my non-synthesizer electronic projects page. I have information and photos of two 70's stereos, projects such as an FM transmitter and scrolling display, and various repair and restoration information for amplifiers, speakers, and turntables.
|Info and photos for my electronic restorations and repairs||Reference|