KLEE SEQUENCER

Bridechamber Panel: Orginal Cost: $100 See Bridechamber page
PCB set: Original Cost $54

Assembled, nearly complete PCB (just a few components need to be soldered, all IC sockets installed). Most, if not all of the chips required are in the parts package of this sale.

Completed Klee sequencers sell for nearly $1000!

  • Multiple “steps” ( aka “stages”) can be active at one time
  • 3 channels of gate outputs – each stage can send a gate pulse to 1 of 3 buses
  • Each group of 8 stages has its own cv output, in addition there is a combined cv output for all 16 stages
  • Variable glide control on each cv output
  • 8×2 or 16×1 stages
  • Variable random factor
  • Variable scaling
  • Numerous flashing lights!

For an excellent, in-depth explanation of the Klee, visit Scott Stites’ page (the designer of the Klee sequencer).

PAIA FATMAN ANALOG SYNTHESIZER

The classic Fatman, needs some troubleshooting, but in great shape (as you can see from the photo). PAiA used to repair these for a very reasonable fee, not sure of they still do. Probably a minor problem.

About the Fatman from the PAiA website: “The FatMan has all of the features that give analog it’s big bottom and punch in a MIDI controlled package. The classic Voltage Controlled normalization is brought up to date with a Velocity CV not available on pre-MIDI synths. Pitch wheel modulation is supported and Pitch and Velocity CVs and gate signal are provided on the front panel for driving PAiA or other linear response synthesizer modules.

And all those knobs. They invite experimentation and invention in ways that a single control with functions buried under layers of obscure menus never can. Just a few hours with the FatMan will teach you more about the nature of sound than you might ever learn otherwise. It’s as at home in the physics lab as on-stage.”

MFOS SOUNDLAB MINI-SYNTH

An analog synthesizer in a box. This project was never completed but includes a fully populated PCB board, box and front panel components (you just need to mount the power switch – available in the parts collection. The box has a slot cut into the front where I had intended to mount the Mini-Controller (see below) making this a standalone synthesizer.

MFOS MINI CONTROLER

MFOS PCB: Original Cost $37 See MFOS catalog
Also available from Modular Addicts.

Assembled, fully populated PCB, panel hardware. The crude panel was just for testing purposes.

  • The MFOS Mini-Controller has a twenty nine note stylus keyboard (C – C – C to E)
  • It can be used to play your Sound Lab Mini-Synth or 1V/Oct modular.
  • The MFOS Mini-Controller supports four CV outputs (2 with portamento 2 without portamento)
  • There is one trigger output and one gate output.
  • Just the coolest thing EVER!

MFOS VOLTAGE CONTROL OSCILLATOR #1

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog
Now available from Modular Addict.

Assembled, fully populated PCB, panel hardware

Look closely at the bottom-left photo and you’ll see one that the back of one of the pots is missing. A replacement pot is included with this sale.

  • Years of MFOS VCO improvements all rolled into this design.
  • Good tracking over several octaves (6 to 8).
  • Can be temperature compensated with a metal film 2K Ohm 1/4W +/-2% T.C. +3300 PPM tempco.
  • Simultaneous Rectangle, Ramp, Triangle and Sine Outputs (Ramp core design)
  • Designed for 1V/Octave control voltage
  • 4 1V/Octave control voltage inputs.
  • 1 Linear control voltage input.
  • Hard sync input
  • Rectangle wave duty cycle adjustable between 10% and 90%
  • Rectangle wave duty cycle voltage controllable
  • Frequency range is from sub audible (approximately 0.1 hertz) to ultra-sonic 20kHz.
  • Power supply can be +/-12 or +/-15 volts.

MFOS VOLTAGE CONTROL OSCILLATOR #2

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog
Now available from Modular Addict.

Assembled, fully populated PCB, panel hardware

Look closely at the bottom-left photo and you’ll see one that the back of one of the pots is missing. A replacement pot is included with this sale.

  • Years of MFOS VCO improvements all rolled into this design.
  • Good tracking over several octaves (6 to 8).
  • Can be temperature compensated with a metal film 2K Ohm 1/4W +/-2% T.C. +3300 PPM tempco.
  • Simultaneous Rectangle, Ramp, Triangle and Sine Outputs (Ramp core design)
  • Designed for 1V/Octave control voltage
  • 4 1V/Octave control voltage inputs.
  • 1 Linear control voltage input.
  • Hard sync input
  • Rectangle wave duty cycle adjustable between 10% and 90%
  • Rectangle wave duty cycle voltage controllable
  • Frequency range is from sub audible (approximately 0.1 hertz) to ultra-sonic 20kHz.
  • Power supply can be +/-12 or +/-15 volts.

MFOS DUAL LINEA VCA

Bridechamber Panel: Orginal Cost: $35 See Bridechamber page
MFOS PCB: Original Cost $17 See MFOS catalog

Assembled, fully populated PCB, panel hardware

  • Log and Linear Response to Control Voltage
  • DC Coupling Throughout
  • Excellent for Ring Modulation Effects
  • Power Supply Range +/-9V up to +/-15V

MFOS -VC LOWPASS 24db/OCT FILTER

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog
Also available at Modular Addict.

  • Assembled, fully populated PCB, panel hardware
  • Four Pole 24dB Per Octave Low Pass Filter
  • Log Response to Control Voltage (1V/Oct Tunable)
  • Makes A Nice Sine Wave Oscillator
  • Power Supply Range +/-9V up to +/-15V
  • Voltage Controlled Cut-Off Frequency
  • Voltage Controlled Resonance

MFOS VC STATE VARIABLE FILTER

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
MFOS PCB: Original Cost $17 See MFOS catalog

Assembled, fully populated PCB, panel hardware

  • State Variable VCF 12dB/Octave With VC Resonance
  • Simultaneous High-Pass, Low-Pass and Band Pass Filter outputs.
  • Log Response to Control Voltage (1V/Oct Tunable)
  • Sine Wave Oscillator at full resonance
  • Power Supply Range +/-9V up to +/-15V
  • Voltage Controlled Resonance (Linear control)

MFOS 8-STAGE CV PHASE SHIFTER

Bridechamber Panel: Orginal Cost: $40See Bridechamber page
MFOS PCB: Original Cost $20 from Music From Outer Space.
Now available from Modular Addict.

Assembled, fully populated PCB, panel hardware

  • Switchable 4 or 8 stage phase shifter.
  • Variable feedback ranges from mild swooshing to raucous mind bending.
  • Two external control voltage inputs.
  • Pseudo stereo output when 4 stage and 8 stage outputs are used.
  • Transconductance amp based phase shift cells.
  • On-Board LFO produces Triangle and Ramp waves.
  • Phase angle is modulated in a logarithmic fashion.
  • 8 Stages of phase shift result in some sweet barber pole effect.

MFOS RING MODULATOR / SONIC MULTIPLIER

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog

Assembled, fully populated PCB, panel hardware

  • Internal sine wave oscillator.
  • Two input channels with gain of 1 to 100.
  • Internal sine x channel two mode
  • Channel one x channel two mode
  • Channel short switch to provide squaring of a single input.
  • Voltage control inputs for internal sine wave oscillator.
  • Sine oscillator output.
  • Make bell like tones.
  • Modify the sound of instrument or vocal.

MFOS VC LFO

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
MFOS PCB: Original Cost $17 See MFOS catalog
Also available from Modular Addicts.

Assembled, fully populated PCB, panel hardware

  • Simultaneous Sine, Triangle, Saw, Ramp, and Variable Pulse Width Rectangle Outputs.
  • Voltage Control of Frequency (approximate log response, NOT 1V/Octave)
  • Voltage Control of Rectangle Pulse Width
  • Fine and Coarse Frequency Control
  • Very Low Frequency (1 Cycle per several minutes)
  • Output levels are all approximately +/-5V (+ or – 300 mV).


MFOS NOISE CORNUCOPIA

Bridechamber Panel: Orginal Cost: $35 See Bridechamber page
MFOS PCB: Original Cost $17 See MFOS catalog
Also available from Modular Addicts.

Assembled, fully populated PCB, panel hardware

  • White Noise.
  • Pink-ish Noise
  • High Pass Noise
  • Adjustable Grainy Noise.
  • Adjustable Random Gates.

MFOS ADSR ENVELOPE GENERATOR #1

Bridechamber Panel: Orginal Cost: $35 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog
Also available from Modular Addicts.

Assembled, fully populated PCB, panel hardware

  • 1 mS to 20 second Attack, Decay, and Release times.
  • Classic ADSR envelope shape and functionality.
  • Gate and trigger inputs permit retrigger after Attack complete.
  • Comparators on gate and trigger inputs.
  • Power Supply Range +/-9V up to +/-15

MFOS ADSR ENVELOPE GENERATOR #2

Bridechamber Panel: Orginal Cost: $35 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog
Also available from Modular Addicts.

Assembled, fully populated PCB, panel hardware

  • 1 mS to 20 second Attack, Decay, and Release times.
  • Classic ADSR envelope shape and functionality.
  • Gate and trigger inputs permit retrigger after Attack complete.
  • Comparators on gate and trigger inputs.
  • Power Supply Range +/-9V up to +/-15

MFOS ADSR ENVELOPE GENERATOR #3

Bridechamber Panel: Orginal Cost: $35 See Bridechamber page
MFOS PCB: Original Cost $20 See MFOS catalog
Also available from Modular Addicts.

Assembled, fully populated PCB, panel hardware

  • 1 mS to 20 second Attack, Decay, and Release times.
  • Classic ADSR envelope shape and functionality.
  • Gate and trigger inputs permit retrigger after Attack complete.
  • Comparators on gate and trigger inputs.
  • Power Supply Range +/-9V up to +/-15


MFOS 16-STEP ANALOG SEQUENCER

Bridechamber Panel: Orginal Cost: $90 See Bridechamber page
MFOS PCB: Original Cost $35 See MFOS catalog

Fully populated PCB board, nearly complete panel, and all parts are available in the parts package with the possible exception of the pushbutton switches (I’m uncertain). They’re easy enough to find if not. Very high-quality switches on this panel.

This has got to be the coolest MOTM-style panel ever made!

  • Assembled, fully populated PCB, panel hardware
  • Produces sequences of 4 to 16 steps in length
  • Modes include stop at count, reverse at count, reset at count and random 16 mode
  • Each step has coarse tune, fine tune, and switchable gate
  • Accepts external clock and external start pulse.
  • Simultaneous outputs with and without portamento.
  • Forward, Back, and Reset controls ease sequence set up.
  • Approximate current consumption: +12V (21.7 mA) -12V (10.5mA)

THOMAS HENRY MEGA PERCUSSION SYNTESIZER

Bridechamber Panel: Orginal Cost: $60 See Bridechamber page
2 – PCBs: Original Cost $25/each Currently available here.

Two assembled, fully populated PCBs, (see photo below)

The panel is much nicer than this bad photo indicates. 8 pots are mounted, the remaining pots, hardware, and knobs are available in the parts package

Read about this awesome module here: http://www.birthofasynth.com/Thomas_Henry/Pages/MPS_project.html.

CGS SYNTHACON FILTER

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
CGS PCB: Original Cost ~$20 See CGS PAGE

Assembled, fully populated PCB, panel hardware

About this module from Ken Stone’s website:

“This module is a “tribute” module, based on the awesome Steiner-Parker Synth VCF. Those who know me will know I’m not a big VCF fan. Nonetheless, this VCF really appeals to me. Its sound is quite unlike the Moog ladder, has a lot of character.

Resonance is a bit unusual in its behavior. Once it starts oscillating, the resonance pot needs to be backed off a fair way to get it to stop again. It can also be frequency dependent.”

YUSYNTH ARP 4072 FILTER

Bridechamber Panel: Orginal Cost: $40 See Bridechamber page
Bridechamber PCB: Original Cost $25 See Bridechamber page

Assembled, fully populated PCB, panel hardware

“The ARP4072 filter equipped mostly the famous ARP2600 semi-modular synthesizer.
I designed my own version of this filter. I have included in the design an input buffer stage and an output buffer stage. The output buffer stage is also used to compensate the loss of low frequencies that is generally observed at high resonance in 24db/octave filters such as the famous Moog ladder.
Curiously enough, neither Bob Moog nor Alan Richard Pearlman cared to compensate for this loss. This is strange knowing that it is quite a simple modification. Such compensation was introduced by Roland for the filter of their nowadays very sought after TB303!”
From www.yusynth.net.


YUSYNTH DUAL SAW ANIMATOR

Bridechamber Panel: Orginal Cost: $35 from here (no longer available there).

Bridechamber PCB: $25 from here.

Assembled, fully populated PCB, panel hardware

“The Saw Animator module is a very interesting module when you wish to get that FAT sound, usually obtained with two or more sawtooth VCOs, but you are short of VCOs. You can get this typical sound with only one sawtooth VCO, thanks to Bernie Hutchins (JAES, 1981). The Digisound 80 has this wonderful module and Scott Bernardi designed a version of its own. The present module is a somehow simplified but yet efficient version. To get the best of this module, it must be used in conjunction with a mixer. I chose not to integrate a mixer within the module in order to benefit from the dry outputs which are very useful when used with a LFO instead of a VCO. When used with a sawtooth LFO and inputing fixed CVs in the MOD inputs, one can achieve some interesting phase shifted modulators such as quadrature modulation. Well the possibilities are numerous and it’s up to your imagination…” From www.yusynth.net/


CGS BI-N-TIC FILTER

Bridechamber Panel: Original cost: $40
Bridechamber PCB: Original Cost $25

Ken Stone’s original project page for this filter.

Fully populated PCB, panel hardware in parts package.

From Ken’s website:

“This is a strange mixture of a VCO and a switched capacitor filter based on the filter presented by Jan Hall in Electronotes. If you are after something different, this fits the bill. After all, how many filters have a sync input?”

CGS BURST GENERATOR

Homemade Front Panel Paper on Aluminum
CGS PCB: Original Cost $17 from CGS, also available here.

Ken Stone’s original project page: https://www.cgs.synth.net/modules/burst_generator.html

Assembled, fully populated PCB, panel hardware

This module is a rhythm and timing accessory. It generates a burst of gate or trigger pulses at various speeds as set from a front panel control.

At higher speeds it can be used for washboard, maracas or similar rapid-burst percussive effects when connected to the appropriate sound generating device such as a ringing oscillator.

At lower speeds it can be used to step a sequencer a certain number of steps or retrigger an envelope shaper. The output pulses are quite narrow when the specified component values are used, and would best be described as trigger pulses in synths that distinguish gates from triggers. Increasing some component values will give longer gate like pulses.

IAN FRITZ 5 PULSER WAVESHAPER

Bridechamber Panel: Orginal Cost: $35 fromhere.

Bridechamber PCB: Original Cost $18 from here (no longer available there).
Available here for $20.

Assembled, fully populated PCB, panel hardware

The SSL “5-PULSER” is a cost-effective waveshaper that produces an output train of pulses whose number (and widths) may be continuously varied with an external control voltage.

(Dual) ANALOG XOR Section

In digital logic, the XOR output is low when either (a) both inputs are low or (b) both are high. The output is high when one and only one of the inputs is high. Thinking of this in terms of the sum of the input signals, the output is low when the sum of the inputs is zero, the output is high when the sum of the inputs is one and the output goes low again when the sum of the inputs is two.

IAN FRITZ CHAQUO CHAOS GENERATOR

Bridechamber Panel: Orginal Cost: $40 from here (no longer available there).

Bridechamber PCB: $25 from here.

Assembled, fully populated PCB, panel hardware

“The main function of this module is a versatile chaotic signal generator (CG). Chaotic signals are signals that have varying degrees of interesting irregularity without actually becoming random. This CG is an analog electronic simulation of the classical driven double potential-well problem, with the addition of extra gain in the circuit loop, and an extra cross-coupling path to extend the range of chaotic patterns available.

The double-well system is a “second-order” system and therefore requires an external driving signal. This is provided by the second part of the module, a sinusoidal quadrature oscillator (QO). The two parts of the module may be used together or separately. The CG may be driven by any output of the built-in QO or by any external oscillator. The QO may drive the CG or be used independently as a four phase oscillator for the usual spatial modulation and other applications. Both parts of the module are manually controlled, to provide a compact, cost-effective unit. The QO has a frequency span of ~0.03 Hz to ~3 kHz in two overlapping ranges.”

(1) IAN FRITZ ALL-IN EG

Bridechamber Panel: Orginal Cost: $35 See Bridechamber page
CGS PCB: Original Cost $20 from Bridechamber.

Assembled, fully populated PCB, panel hardware

A punchy AD/ AR envelope generator with an additional input that gives you full control over pulse delay and width. A lot of versatility in 1U!

BLACET 2600 SCANNER MODULE

From http://blacet.com/:

The Blacet MD2600 Scanner and MD2650 Sequential Switch perform similar functions but with some important differences.

The Scanner selects one of three inputs via a control voltage and sends it to the output. The inputs can be made to overlap, so that the switching point is not abrupt. Adjacent inputs will appear blended at the output over a portion of the CV range.
Trimpots on the Scanner allow changing the effective range of the CV input and the overlap amount.
The Sequential Switch is a clock driven device and has only one input present at the output at a time. The Switch is also bidirectional, where the Scanner is not. The module has a built in clock or can be overridden with an external
clock.

A DIP switch on the module allows three stages or four stages with the last stage “off”.
Both modules can be used for audio or CV signals.

BLACET 2650 SEQUENTIAL SWITCH MODULE

From http://blacet.com/:

The Blacet MD2600 Scanner and MD2650 Sequential Switch perform similar functions but with some important differences.

The Scanner selects one of three inputs via a control voltage and sends it to the output. The inputs can be made to overlap, so that the switching point is not abrupt. Adjacent inputs will appear blended at the output over a portion of the CV range.

Trimpots on the Scanner allow changing the effective range of the CV input and the overlap amount.
The Sequential Switch is a clock driven device and has only one input present at the output at a time. The Switch is also bidirectional, where the Scanner is not. The module has a built in clock or can be overridden with an external clock.

A DIP switch on the module allows three stages or four stages with the last stage “off”.
Both modules can be used for audio or CV signals.

BLACET 2910 MIDIVERTER MIDI TO CV/GATE/SEQ MODULE

From http://blacet.com/:

The Blacet MD2600 Scanner and MD2650 Sequential Switch perform similar functions but with some important differences.

The Scanner selects one of three inputs via a control voltage and sends it to the output. The inputs can be made to overlap, so that the switching point is not abrupt. Adjacent inputs will appear blended at the output over a portion of the CV range.

Trimpots on the Scanner allow changing the effective range of the CV input and the overlap amount.
The Sequential Switch is a clock driven device and has only one input present at the output at a time. The Switch is also bidirectional, where the Scanner is not. The module has a built in clock or can be overridden with an external clock.

A DIP switch on the module allows three stages or four stages with the last stage “off”.
Both modules can be used for audio or CV signals.

THOMAS HENRY XR-VCO NO PANEL

No Panel Homemade FrackRack-style panels are included, you just need to change the jacks (also included in Parts/Hardware).

This board includes a LM324 Matched Transistor Pair and Tempco resistor. This was working fine, just needed calibration.

Read about this module here.

THOMAS HENRY XR-VCO COMPLETE

Homemade FrackRack-style panel. Looks a bit better than this photo indicates.

This board includes a LM324 Matched Transistor Pair and Tempco resistor. This was working fine, just needed calibration.

Read about this module here.

THOMAS HENRY XR-VCO COMPLETE

Yet another complete XR-VCO.

This board includes a LM324 Matched Transistor Pair and Tempco resistor. This was working fine, just needed calibration.

Read about this module here.

THOMAS HENRY XR-VCO NO PANEL

Homemade FrackRack-style panel. Looks a bit better than this photo indicates.

Yet another XR-VCO, home-etched PCB, LM324 Matched Transistor Pair, Tempco resistor. Another FrackRack-style panel is included in the bundle. This was working fine, just needed calibration.

Read about this module here.

THOMAS HENRY UD-1 DRUM VOIE

A crummy photo of a not-so-nice panel (paper on aluminum w/clear coating). But all the parts are there and the PCB is commercially etched (see photo below).

THOMAS HENRY RING MODULATOR

Panel and all panel components. The board is not included. You’re going to have to track down the circuit for this…

STEINER VCO & LFO

Homemade FrackRack-style panel. This is a dual-module panel, the working LFO is from the late Ray Wilson’s website (www.musicfromouterspace.com (home-etched PCB). The PCB for the Steiner filter may be in the massive parts collection included in this sale, I’m not sure. Various versions of this filter are available on the web to build your own.

KEN STONE’S (CGS) MATRIX MIXER

No board for this, but the panel + parts is the hard part. The circuit is quite simple, wiring the panel… not so much, so have fun with that! I was surprised I was able to fit this on a FrackRack panel. Looks pretty awesome too. Read about this on Ken Stone’s site.

CGS SUPER SYCHO MODULATION SOURCE

Panel and board (see photo below). Read about this module on Ken Stone’s website.

RAY WILSON’S MFOS VOLTAGE PROCESSORS

Just the panel, I can’t seem to find the board for this (if I find it before packing everything up, I’ll include it). This is based on the MFOS Multi-Function Module.

RAY WILSON’S MFOS DUAL VCA

Panel and all panel components. This designed for the MFOS Dual Log/Lin VCA.

RAY WILSON’S MFOS DUAL A/R ENVELOPE

Panel and all panel components (except two switches, but they’re in the parts package). This designed for the MFOS Dual A/R Envelope Generatore.

RAY WILSON’S MFOS MICRO SAMPLE & HOLD

Panel and all panel components. This panel is for the MFOS Micro Sample & Hold.

CGS INFINITE MELODY

Panel and all panel components (except two switches which are most likely in the parts package). This panel is for the CGS Infinite Melody module. The fully populated board is included (see photo below). Here’s what Ken says about it:

“The name of this module is a play on its function. Put simply, it generates a series of semi-random or themed stepped control voltages, or if you prefer, white and pink control voltages. The pink function is probably better known as 1/f, and thus the name of “1l/lfinite melody”.

Assuming a 1 v/oct VCO is being driven by the module, in the 1/f mode, the size of a pitch step is inversely related to the frequency at which it will occur. In other words, the smallest steps are most common, steps twice their size occur half as often, and so on.

As well as the 1/f mode, it has a pure random mode, where no weighting is put on the selection of notes. A large step is as likely as a small one…”

CGS DIATONIC CONVERTER

Panel and all panel components. This panel is a companion for the above Infinite Melody. The partially populated board is included (see photo below). The remaining part for the board should be available in the parts package (I’m not certain) Here’s what Ken says about it:

“The Diatonic Converter is an adapter for projects such as the Infinite Melody and Gated Comparator, constricting their outputs to the notes of a major or minor diatonic scale instead of the chromatic scale. A single control line selects between major and minor. Three control lines select the note in the scale, and three more select the octave.

The key in which the notes are played is determined by sending the appropriate voltage into the unit’s mix input, or mixing the output of the unit with other voltage sources externally.

Of course a 1 volt per octave VCO is required to convert the control voltage output of this module into an actual pitch.

Note that this module is NOT a quantizer. It works with a digital input, NOT an analog one.”

LFO, LOWPASS GATE & LP VCF

Homemade FrackRack-style panel. This is a triple-module panel, (1) Ray Wilson MFOS LFO, (1) Yves Usson Yusynth Low Pass Gate, and (1) MFOS LP VCF. The boards are not available, circuits are available on their websites.

CGS SEQUENTIAL SWITCH & THOMAS HENRY SN-VOICE

This is a double-module panel only (no boards), (1) CGS Sequential Switch and (1) Thomas Henry SN-Voice. All of the panel components are installed except switches and one pot, the parts package contains the pot and some, if not all, of the switches (I’m not certain).