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 Modular Photos|
|Thomas Maximus VCO||Moog Modular Reissue New|
|Thomas Henry SN-Voice||Moog Sonic Six synthesizer|
|4U 200 Series Format 24 dB VCF and Clock²||Moog Source|
|5U Chaotica||Oberheim Mini-Sequencer (MU repackage)|
|5U Benjolin²||Oberheim SEM|
|Jürgen Haible "solina" triple chorus||PAiA 2720 Synthesizer|
|Ian Fritz DoubleDeka VCO²||PAiA 4700 Synthesizer Modules|
|5U E950 Circuit Bent VCO||Papareil Labs Quantix-8²|
|CGS-35 Steiner VCF²||Roland System 100 - 140 module|
|Thomas Henry mega percussive synthesizer||SCI Model 700 Programmer|
|5U E560 deflector shield||SCI Model 800 Sequencers|
|Barton dual quantizer²||Serge|
|DJB-021 pan-crossfade²||Synton 3000 series modules|
|5U 266 source of uncertainty²||WASP synthesizer|
|Polivoks VCF²||YUSynth Dotcom Mini-Moog VCF|
|5U E580 sampling mini-delay|
|Ian Fritz 'threeler' 3rd order VCF²||Photos, Videos, and Sound Samples|
|DJB-020 tap tempo LFO¹||Photo album|
|5U 208 pulser-crossfader-timbre generator²||Video and Sound samples|
|Hammond M-3 tonewheel generator|
|My visit with the Raymond Scott Electronium|
|5U Modular Synthesizer Information|
|Module listing by cabinet||Organs and more|
|Custom modules design files and photos¹||Hammond B-3 and Leslie 142|
|Purchased modules and modifications²||Hammond M-3 tonewheel generator Photos|
|Dotcom modules||Hammond vibrato scanner module²|
|Main cabinets & power distribution¹||Hammond zinc whiskers Photos|
|Side cabinets & power distribution¹||Organs, keyboards and amplifiers|
|Tektronix 760A Stereo Audio Monitor|
|Electronics Projects and Repairs|
|Reference Information||AMF 775-A Educational (Analog) Computer|
|Modular synth tips||Bell Sound Systems RT-205 & BT-205IB|
|Parts and DIY information||Electronic project information|
|Making PCB brackets||Electronic repairs and tips information|
|Module Conversions||Fender Tremolux Restoration|
|440 Hz sine wave reference oscillator¹||Sony TA-E88 Restoration|
|Power supply sequencing¹||Synthesizer XY laser²|
|PT2395 delay module²|
|Vactrol measurements||5U ComputerVoltageSource Module|
|CVS eight channel module¹|
|Related Musical Projects||CVS 2x16 LCD display¹|
|Circle machine sequencer¹||CVS four channel module (PSIM software compatible)¹|
|MIDI 88 note keyboard²||CVS Kurzweil ribbon controller¹|
|MIDI bass pedals¹||Synthmodules.com PSIM and SpeakJet²|
|MIDI processor¹||CVS and PSIM I/O expansion module¹|
|SpeakJet speech synthesizer²||CVS and PSIM Programs¹|
|Yamaha Tenori-On||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|