Bill and Will's MOTM Analog Synthesizer
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We decided to build our Synth in late 2005 and contemplated its layout and began collecting materials for it. When we actually began construction a bit more than a year later, in aught seven, Will and I started this site as a diary of our progress - really for our own reference - and at first, just for fun. So then we listed the modules we built in chronological order - like a diary. Recently, though, we've re-arranged this page so it's better for reference - by module name first. The diagram above shows our cabinets with the modules we've already completed in white, the modules soon to be completed greyed-out, and the reach of the 20in MOTM standard power cables are the red arcs. It also shows the power indicator LEDs per our power distribution plan. The page has gotten so long that we made a table of contents: |
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Table of Contents |
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Construction notes and images in module name order Construction (and snack) notes and images in chronological order |
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Construction notes and images in module name order
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April 2007 - |
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April 2007 - |
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April 2007 - |
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November 2008 - |
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January 2009 - |
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MOTM 320 Voltage Controlled Low Frequency Oscillator (with Tellun 320DB) |
June 2007 - |
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April 2007 - |
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February 2009 - |
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February 2009 - |
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October 2009 - |
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MOTM 440 "Discrete OTA Voltage-Controlled Lowpass Filter with VC Resonance" |
September 2008 - |
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MOTM 480 "CS-80 Resonant Filter - with Richard Brewster's modifications (and a little of our own!)" |
February 2010 - |
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February 2009 - |
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October 2009 - |
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MOTM 700 Dual 2:1 Voltage-Controller Router - a Two Dot Oh project |
August 2009 - |
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March / April 2007 - |
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MOTM 800 Envelope Generator - a Two Dot Oh project (with Tellun 800DB) |
August 2009 - |
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February 2009 - |
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Feb / May 2007 - |
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November 2009 - |
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Feb / May 2007 to Dec 2008? |
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November 2009 |
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July 2009 - |
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January 2008 - |
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September 2009 - |
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November 2008 - |
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January 2011 - |
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February 2010 - |
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January 2008 - |
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January 2010 - |
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May 2008 - |
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April 2009 - |
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December 2007 - |
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April 2009 - |
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August 2009 - |
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June 2007 - |
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December 2010 - |
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December 2007 - |
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December 2010 - |
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December 2010 - |
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December 2010 - |
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February 2009 - |
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September 2009 - |
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December 2009 - |
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August 2009 - |
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Oakley Sound Systems Analogue Overdrive and Distortion Module |
January 2011 - |
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June 2010 - |
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May 2010 - |
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January 2010 - |
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March 2010 |
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Tellun 156 - "Neural Agonizer" voltage controlled spring reverb processor |
December 2009 - |
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Tellun 712 - "Doomsday Machine" voltage controlled waveform animator |
June 2007 - |
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August 2009 - |
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November 2008 - |
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June 2008 - |
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April 2009 - |
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September 2009 - |
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September 2008 - |
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Construction (and snack) notes and images in chronological order:
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Feb / May 2007 to Dec 2008? |
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Feb / May 2007 - |
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March / April 2007 - |
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April 2007 - |
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April 2007 - |
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April 2007 - |
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April 2007 - |
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June 2007 - |
MOTM 320 Voltage Controlled Low Frequency Oscillator (with Tellun 320DB) |
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June 2007 - |
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June 2007 - |
Tellun 712 - "Doomsday Machine" voltage controlled waveform animator |
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December 2007 - |
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December 2007 - |
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January 2008 - |
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January 2008 - |
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May 2008 - |
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June 2008 - |
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September 2008 - |
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September 2008 - |
MOTM 440 "Discrete OTA Voltage-Controlled Lowpass Filter with VC Resonance" |
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November 2008 - |
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November 2008 - |
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November 2008 - |
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January 2009 - |
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February 2009 - |
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February 2009 - |
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February 2009 - |
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February 2009 - |
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February 2009 - |
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April 2009 - |
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April 2009 - |
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April 2009 - |
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July 2009 - |
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August 2009 - |
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August 2009 - |
MOTM 700 Dual 2:1 Voltage-Controller Router - a Two Dot Oh project |
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August 2009 - |
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August 2009 - |
MOTM 800 Envelope Generator - a Two Dot Oh project (with Tellun 800DB) |
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September 2009 - |
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September 2009 - |
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September 2009 - |
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September 2009 - |
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October 2009 - |
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October 2009 - |
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November 2009 - |
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November 2009 |
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December 2009 - |
Tellun 156 - "Neural Agonizer" voltage controlled spring reverb processor |
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December 2009 - |
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January 2010 - |
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January 2010 - |
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February 2010 - |
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February 2010 - |
MOTM 480 CS-80 Resonant Filter - with Richard Brewster's modifications (and a little of our own!) |
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March 2010 - |
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May 2010 - |
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June 2010 - |
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December 2010 - |
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December 2010 - |
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December 2010 - |
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December 2010 - |
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January 2011 - |
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January 2011 - |
Oakley Sound Systems Analogue Overdrive and Distortion Module |
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Helpful Information
Tools List
Parts Lists / Bill of Materials for Synth Modules
Resitor Value Markings
Capacitor Value Conversions (μ, n, p)
Switchcraft jack configurations
Drawings of the Tellun MUUB2 Daughterboard.
Drawings of the Tellun MUUB3 Daughterboard.
Drawings of the Tellun MUUB4 Daughterboard.
Drawings of the Ken Stone / Bridechamber Buffer / Inverter PCB
John Loffink's "Chicklet" PCB
mrmike's Very Cool Module Library ppt File (for synth layout and design)
Keyboard Frequencies / Names of Notes
Technique for sorting resistors
Technique for soldering ICs into PCB
Technique for soldering Pots into PCBs
Technique for soldering Tempco Resistor into PCBs
Technique for stripping and tinning coax
Technique for attaching MTA Plug (Jill) to wires
Technique for matching transistors a lá MOOG
Technique for matching diodes
Panel Design á la Bill and Will
Links to Others' Sites
Synthesis Technology (Paul Schrieber)
Bridechamber (Scott Deyo)
Dave Brown
Hot Rod MOTM Shop (Dave Bradley)
Jürgen Haible
Music from Outer Space
Richard Brewster's Synthesizer
Tangentsoft - has some great info in the Audiologica and Electronics sections
Tellun Industries (Scott Juskiw)
YUSynth (Yves Usson)
http://www.modularsynth.net
Parts Suppliers
Bridechamber (Scott Deyo)
Digikey
Mouser Electronics
Newark Electronic Supplier
Vintage Planet
Snacks
Baked Salmon - pesto - MOTM 310
Bill's Burgers - Yusynth Saw Animator
Bill's Famous Grilled Cheese Sandwich with Dandelion Greens - MOTM 800
Fried Italian sausage with hot peppers and potatoes - MOTM 830
Corned Beef Hash Breakfast for Supper - JH Krautrock Phaser
Frutti Del Mare w/ broccoli - JH Tau Pipe
Lamb Leg Roast - MOTM 420
Lamb Shanks - MOTM 480
Lamb Rack - YUSynth EMS Diode Ladder Filter
Mike F's Incredible Chili - MOTM 320
Grandma's Meatloaf - MOTM 440
Grandma's Bison Stew - MOTM 120
Paella - Tellun 156 Neural Agonizer
Pot Roast - JH Triple Chorus
Reubin Sandwitch - MOTM 700
Roasted Chicken with Root Vegetables - CGS65 Tube VCA
Scalloped Potatoes - MSE Mankato Filter
Steak Grilled on a Snowy Day - Yusynth Fixed Filter Bank
Slow Bread - CGS/Pugix
Face-plate Drawings
In the process of planning our modular analog synth, we drew schematic drawings of the faces of the modules. Then, by creating .jpgs from the drawings, we assembled them into layouts to help us determine optimal configuration. We also created a patch sheet to record patches.
We posted the .jpgs here so others can use them to create designs and patch sheets. We didn't make drawings of the power modules (900 & 950) because we're putting ours on the back of the synth case.
As of July, 2007, with Mike, who was interested in using the images and in adding more images of additional modules, we all re-designed them. Together, we developed a standard format incorporating our ideas for what would make good patch-sheet images as well as more accuracy for layout purposes. We'll be posting all these new images over the next few weeks. Huge thanks to Mike.
The little face panel images below are thumbnails that open a window with a larger image. Technically, the panel image you'll see is the background image of that new window. By right clicking on the image you can "Save background as..." or "Copy background" in order to save a copy of the image for your use.
The size of the knobs in the drawings was meant to be schematic. But as of Mid-July 2008, we wanted them to be more accurate. So we've begun updating all the panel designs to reflect the standard MOTM knob (Alcoswitch PKES-90B-1/4) which is 1.01in dia. Panel designs which have been updated have a tiny asterisk (*) next to the thumbnail. While we're at it we've changed the font to the MOTM standard "Alternative Gothic No. 2 BT." We thought we'd done it before, but apparently we hadn't. If there's a module you want a drawing for and we haven't updated it yet, send us email - we'll do it right away.
To download a Power Point file of our 11" X 17" design/patch-sheet to use in developing your own, click here.
We've put our first synth designs at the bottom of this page.
MOTM 101 -
Noise Sample & Hold Module
)
*
MOTM 110 -
Voltage Controlled VCA / Ring Mod
)
*
MOTM 120 -
Sub-Octave Multiplexer
(right)-
with Tellun Industries Modifications 120R
)
*)
*
MOTM 190 -
Micro Voltage Controlled Amplifier (Ring Modulator) Module
){kind=small}
*
MOTM 300 -
Ultra Voltage Controlled Oscillator
)
*
MOTM 310 -
Micro Voltage Controlled Oscillator
){kind=small}
*
MOTM 320 -
Voltage Controlled Low Frequency Oscillator
(right)-
with Tellun Industries Modifications 320R
)
*)
*
MOTM 380 -
Quad Low Frequency Oscillator Module
){kind=small}
*
MOTM 390 -
Micro Low Frequency Oscillator Module
){kind=small}
*
MOTM 410 -
Triple Resonant Filter with Dual VCLFO
)
*
MOTM 420 -
Voltage Controlled Filter
)
*
MOTM 440 -
Discrete OTA Voltage-Controlled Lowpass Filter with VC Resonance
)
*
MOTM 450 -
Fixed Filter Bank Module
Due Summer, 2009
)
*
MOTM 480 -
CS-80 Resonant Filter
(right_ - with RB and DFA mods - additional jacks, and control knobs
)
*)
*
MOTM 485 -
GX-1 Voltage Controlled Filter
(right)-
with Tellun Industries Modifications 485R
){kind=small}
*)
*
MOTM 490 -
Micro Voltage Controlled Filter Module
){kind=small}
*
MOTM 510 -
WaveWarper
)
*
MOTM 520 -
Cloud Generator
)
*
MOTM 650 -
4-Channel MIDI-CV Converter
)
*
MOTM 700 -
Dual 2:1 Voltage-Controller Router
)
*
MOTM 730 -
Voltage-Controlled Pulse Divider
)
*
MOTM 800 -
ADSR Envelope Generator
(right)-
with Tellun Industries 800DB
){kind=small}
*){kind=small}
*
MOTM 820 -
Voltage-Controlled Lag Processor
)
*
MOTM 830 -
Dual-Mode Mixer
)
*
MOTM 850 -
Pedal Interface (discontinued)
){kind=small}
*
MOTM 910 -
1U Cascaded Multiple
){kind=small}
*
BLACET RESEARCH
Binary Zone
)
RICHARD BREWSTER -
Mixer Comparator
){kind=small}
*
RICHARD BREWSTER -
Wogglebug
)
BUCHLA / VERBOS / STITES
921 LP Gate
)
BUCHLA
922c LoPass Gate
)
*
CAT GIRL SYNTH -
CGS-01
Sub Oscillator
)
CAT GIRL SYNTH - CGS-04
Mixer - 1U
(right)-
Mixer - 2U
){kind=small}
*)
CAT GIRL SYNTH -
CGS-06
Burst Generator
){kind=small}
CAT GIRL SYNTH -
CGS-21
Super Psyco Modulator
)
CAT GIRL SYNTH -
CGS-23
C.V. Mega Mixer
)
CGS 26&34 / Pugix
Cat Girl Synth 26 -
Analog Logic Processor /
Cat Girl Synth 34 -
Analog Shift Register /
Multiple
)
*
CAT GIRL SYNTH -
CGS-29
Wave Multiplier
)
CAT GIRL SYNTH -
CGS-35
Synthacon Filter
)
CAT GIRL SYNTH -
CGS-36
Pulse Divider / Boolean Logic
)
CAT GIRL SYNTH -
CGS-37
CV Cluster
)
CAT GIRL SYNTH -
CGS-51/55
Random Weighted Switch / Analog Switch Matrix
)
CAT GIRL SYNTH -
CGS-58
Dual LFO
)
CAT GIRL SYNTH -
CGS-62
Slope Detector
){kind=small}
CAT GIRL SYNTH -
CGS-65
Tube VCA
){kind=small}
*
CAT GIRL SYNTH -
CGS-67
Active Real Ring Modulator
){kind=small}
*
CLICK-BANG / BIG BANG -
Preamp/Envelope Follower
(right)-
Version 2
){kind=small}
){kind=small}
*
CLICK-BANG / Dragonfly Alley -
Pedal Interface
){kind=small}
*
CLICK-BANG / HARRY BISSEL-
Preamp/PV1
(right)-
Version 2
){kind=small}
){kind=small}
Dragonfly Alley -
DFA-875
Gabotronics Oscilloscope
)
*
Dragonfly Alley -
DFA-930
Inverter / Multiple
)
*
EMF -
Dual Envelope Generator
)
EMF -
VC-ADSR
)
EMF -
VCO 4e
)
Ian Fritz -
5 Pulser Waveshaper
){kind=small}
Ian Fritz -
EZ Chaos Circuit
){kind=small}
Ian Fritz -
The Jerkster
(right)-
2 Unit Wide Version
){kind=small}
)
Ian Fritz -
Teezer Through-Zero Oscillator
)
*
Ian Fritz -
Threshold / Gate / Trigger / Sample / Hold
(right)-
2 Unit Wide, Double Version
){kind=small}
)
Jürgen Haible
(left) -
JH-907B
JH "Moog" Fixed Filter
10 band version
(right) -
JH-914B
14 band version
)
*)
*
JH "FS1A" -
Jürgen Haible
Frequency Shifter
)
*
JH Interpolating Scanner -
Jürgen Haible
Interpolating Scanner
)
*
JH IS Chorus / Vibrato -
Jürgen Haible
Interpolating Scanner Chorus Vibrato
)
*
JH Combination Interpolating Scanner and Chorus / Vibrato -
Jürgen Haible
Interpolating Scanner
)
*
JH "Krautrock Phaser" -
Jürgen Haible
(Compact Clone) Phase Shifter
(right)-
Control Voltage Version (an idea)
)
*)
*
JH Living VCOs -
Jürgen Haible
Living VCOs
Ultimate, 7U version with 3 waveshapers
)
*4U version using very dinky 1/2" knobs and sans waveshapers
)
*5U version using Tellun-style 3/4" dinky knobs and sans waveshapers
)
*
JH Polymoog Resonator -
Jürgen Haible
Resonator
)
*
JH Son of Storm Tide Flanger -
Jürgen Haible
SOST Flanger
)
*
JH "String Filter" -
(right)-
Jürgen Haible
String Filter
Scott Juskiw-inspired Separate Band Control Version
)
*)
*
JH Subtle Chorus with DIM-D and DIM-T Effects -
Jürgen Haible
Subtle Chorus
)
*
JH Tau Pipe -
Jürgen Haible
Tau Pipe 20-Pole Phaser
(right)-
Two LED Version
)
*)
*
Rack version
for Bill's guitar rack
(inputs and outputs also on back)
){kind=small}
JH Trapezoid VCA -
Jürgen Haible
Trapezoid VCA
(center)-
with input attenuators
(right)-
Trap. Genrator only
)
*)
*)
*
JH Triple Chorus-
Jürgen Haible
Triple Chorus / Solina Emulator
)
*
Rack version
for Bill's guitar rack
(inputs and outputs also on back)
){kind=small}
JH Varilogic -
Jürgen Haible
Varilogic
){kind=small}
JH Wasp VCF -
Jürgen Haible
Waveshaper
){kind=small}
JH Waveshaper -
Jürgen Haible
Waveshaper
){kind=small}
JLH 822 -
Larry Hendrey V-shift
Shift by Octave
){kind=small}
JLH 831 -
Larry Hendrey V-shift
Shift by Variable Voltage
){kind=small}
MAGIC SMOKE -
TH-201/8 Thomas Henry -
Mankato VC Filter
(right) Bridechamber "Sine Generator" version
)
*)
*
MFOS 4P-VCF -
Music from Outer Space -
Voltage Controlled Filter
){kind=small}
MFOS EG -
Music from Outer Space -
Envelope Generator
){kind=small}
MFOS SVVCF -
Music from Outer Space -
State Variable VCF
){kind=small}
MFOS VCA -
Music from Outer Space -
Voltage Controlled Amplifier
){kind=small}
MFOS VC Panner -
Music from Outer Space -
Voltage Controlled Panner
){kind=small}
*)
*
MFOS VCO -
Music from Outer Space -
Voltage Controlled Oscillator
)
Milton Sequencer
)
Oakley Systems -
OMS-410
OMS-410, 2 Unit
){kind=small}
*)
Oakley Systems -
OMS-820
){kind=small}
*
Oakley Systems -
Envelope Follower and Gate Extractor (EFG)
){kind=small}
*
Oakley Systems -
Equinoxe Voltage Controlled Phaser
){kind=small}
Oakley Systems -
Overdrive and Distortion Unit
){kind=small}
*
Oakley Systems -
Triple VCA
)
*
Papareil Synth Labs -
Dual VCA
){kind=small}
Papareil Synth Labs -
"Polivoks" VCF
(ПОЛИВОКС ВГФ)
Bridechamber Version
Original version on right
){kind=small}
*){kind=small}
*
SEB FRANCIS -
4 x D Quad Flanging Delay —
)
Steiner -
Triple EG—
)
*)
*
Steiner -
VCO—
2U version at right is less true to the original, but is is essentially the functional equivalent.
)
*)
*){kind=small}
*){kind=small}
*
SCOTT STITES -
Klee Sequencer—
)
TELLUN 156 -
Neural Agonizer—
Voltage Controlled Spring Reverb Processor
)
*
TELLUN 428 -
Voltage Controlled State Variable Filter
)
TELLUN 712 -
"Doomsday Machine"
Voltage Controlled Waveform Animator
)
*
TELLUN 861 - "Dunsel"
Signal Processor
){kind=small}
*
TELLUN 862 -
Lag Processor
){kind=small}
TELLUN 863 -
Min / Max
){kind=small}
*
TELLUN 864 -
Switching Comparator
){kind=small}
TELLUN 866 -
Gate Processor
){kind=small}
TELLUN 867 -
Tuner / Monitor
){kind=small}
*
TELLUN 904 -
Veeblefetzer
){kind=small}
*
Thomas Henry -
Envelope Generator
){kind=small}
Thomas Henry -
LFO
)
Thomas Henry -
Mega Percussive Synth
)
*
Thomas Henry -
Noise Generator
){kind=small}
Thomas Henry -
XR2206-based
Voltage Controlled Oscillator
)
*
Thomas Henry -
Voltage Controlled Quadrature Function Generator
){kind=small}
Warp 633 -
Ring Modulator
){kind=small}
Wiard/Blacet Research -
Mini-Wave 2090 -
Voltage Controlled Wavetable Device
)
Yusynth -
Auto-Bend
){kind=small}
Yusynth -
CV Standards
)
*
Yusynth -
EMS Diode Ladder Filter
)
*
Yusynth -
Dual Min-max
){kind=small}
Yusynth -
Fixed Filter (12 Band) Bank
Four Unit Wide MOTM - Compatible Panel Design
)
*
Yusynth -
Fixed Filter Bank - 1/3 Octave 22 Band / 8U / Seperate Output Version
Eight Unit Wide MOTM - Conforming Panel Design
)
*
Yusynth -
Fixed Filter Bank - 1/3 Octave 22 Band / 6U Dinky Knob / Seperate Output Version
Six Unit Wide Panel Design
)
*
Yusynth -
Gate Delay
){kind=small}
Yusynth -
Minimoog Transistor Ladder Filter
){kind=spacer}
*
Yusynth -
Pulse Delay
){kind=small}
Yusynth -
Voltage Controlled Mixer / Panner
)
*
Yusynth -
Saw Animator
){kind=small}
*Old MOTM Design 1
This is an earlier design we did for our synth. We originally had fewer modules than we ended up with... and we had planned less room for growth. But we thought it might be interesting to include here.
Old MOTM Design 2
Then we did this one.
Old MOTM Design 3
Ahem - then we did this one. We are beginning to suspect that we have gone insane. - OK - Will is sure I'm insane.
Old MOTM Design 4
Right - this one stood for all of a year... now we know we have gone insane. - Yes - Will is still sure I'm insane.
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Dragonfly Alley Main Page The fine Print: Use this site at your own risk. We are self-proclaimed idiots and any use of this site and any materials presented herein should be taken with a grain of Kosher salt. If the info is useful - more's the better. Bill and Will © 2005-2011 all frilling rights reserved |