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Notes: Dual 1 x 3 buffered mult (one audio or cv signal in with multiple buffered outputs).

The output of the first mult is normalled to the input of the second mult to create a 1×6 buffered mult

Notes: Another update for WMD's clever dual VCA, this time a little bigger to give more control. Digital control of CV and attenuation gives lots of creative options. Third time's a charm.

Supplier's Notes:
WMD have done several designs of this circuit over the years, the first one had no knobs, the second was too small, the MKIII is finally how this circuit should be packaged. This module does some really cool stuff and is super useful in any system.

The Digital VCA lets signal through like a normal VCA, but the CV and attenuation level is controlled digitally. This lets us do things like wait until there is a zero crossing to change the amplitude, resulting in clickless amplitude changes.

The Trigger mode causes the VCA to only update when a trigger is received. The addition of a noise circuit for each side let us do a very quick and easy sample and hold that never droops. With no input, 5V is normaled to the attenuator, so you get a 0-5V sample and hold. In Bipolar mode, you can get -5 to +5V.

Both sides have bipolar VCA mode (polarizer), which lets them invert the signal when negative CV comes in. Also known as ring modulation. With the zero crossing detector, this can produce some super wild wave shapes.

Features

Dual VCA Design
Unipolar or Bipolar Operation
DC Coupled Analogue Signal Path
Low Distortion / Low Noise
VCA Closes Completely
Zero Crossing Detector Mode
Trigger Mode
Two Independent Noise Sources
8 bit CV resolution
Great for Fast Envelopes and Sine Bass Sounds

Specifications

Power: +65mA, -45mA
Width: 8HP
Depth: 35mm with cables
Height: Eurorack 3U (128.5mm)
Board Height Behind Panel: 112mm
CV/Signal Input Impedance: 100k
Output Impedance: 1k
UPD in 3.3V Threshold Schmitt Trigger
ZCD produces 15us 5V pulse
5V CV to fully open VCA
Linear VCA response
20Vpp signal handling

Notes: The WoggleBug music synthesizer module is a random voltage generator, originally designed by Grant Richter of Wiard Synthesizers. It is a continuation of the "smooth" and "stepped" fluctuating random voltage sources pioneered by Don Buchla within the Model 265 "Source of Uncertainty," expanding it to include the other-worldly Woggle CVs (stepped voltages with decaying sinusoids edges). The Wogglebug is a very musical random voltage generator where it is possible to synchronize all random signal to a Master Clock. Guaranteed to unleash your synthesizer's ID MONSTER!

Features:
Complete Complex Random Voltage system, no external modules necessary
Two VCOs, Phase Lock Loop, Lag Processor, Clock, Burst Generator and Sample & Hold
Generates 7 Random Signals simultaneously: Smooth VCO, Woggle VCO, Ring Mod, Stepped, Smooth, Woggle, Burst
Generates voltage controlled Master Clock
External inputs for S&H (Heart IN) and Ring-Mod (Influence)
Disturb button adds performance element
Wonderful for modulating the Morphagene and DPO

Specifications:
Width: 10hp
Max Depth (incl. power cable): 32mm
Power: 50mA@ +12V; 40mA @ -12V

Notes: A compact Voltage Controlled Oscillator designed for generating SINE waves, Variable wave-SHAPEs, SUB-Octaves, Oscillator SYNC and Linear FM in the analog domain.

The Sub-Timbral Oscillator is the more subtle and melodic friend to the DPO's complex harmonic lattice.

Notes: The ZONE B.F. module is an element of the Capsule TITAN. Zone basses frequences stands for low frequency zone. This module is composed of 2 LFOs, both LFOs have 16 sync-able waveforms.

Speed : speed of the LFO, range from 0.1 Hz to +/-200 Hz
Wave (LFO 1 & 2) : 16 Syncable waveforms

The ZONE B.F. (black edition onwards) now features an additional mode. On the back of the PCB you will find two jumpers, marked as JP1. CV1 is LFO channel 1 and CV2 is LFO channel 2. By moving the jumper so it sits on one leg (rather than 2 as when you have received the module), the Sync input for either LFO channel now becomes LFO speed input, controllable via CV.

Tech Specs

- SYNC 1 & 2 : LFO waveform is reset when an impulse signal is received
- OUT 1 & 2 : LFO signal outputs 1 & 2
- Voltage swing is -/+5V
- LEDs display LFO activity
- Eurorack 5 HP
- Metal pot, panel mounted, screwed
- Consumption: +12V 40mA, -12V 10mA

Notes: The FUNCTION music synthesizer module is part of the MATHS family of control voltage utility modules. It is a small analog computer designed for solely musical purposes.

Features:

Generate a variety of linear, logarithmic, or exponential functions
Functions as short as 2ms and as long as 25 minutes per cycle!
Triggered Functions (Envelope)
Continuous Functions (LFO)
Invert and/ or Integrate (Lag, Slew, Portamento)
Discrete Time Functions (S&H, T&H)
LEDs indicate activity on all outputs
End of Rise and End of Cycle Pulses facilitate programming of more complex functions
All outputs capable of driving a passive 4 way mult without loading effects (no buffered mult needed here)
Perfect for modulating the DPO and just about anything else

Specifications:

Width: 8hp
Max Depth
(incl. power cable): 32mm
Power:
30mA@ +12V
20mA @ -12V

Notes: Pressure Points is a controller module, an analog sequencer that is played by hand. Touching the gold plated copper wires (aka Touch Plates), you become part of the circuit, generating a gate signal (Gate OUT), a control signal proportional to the amount of pressure applied (Press OUT) and the 3 Tuned Voltages for the activated Stage.

Notes: Dual 4-way passive mult (one audio or cv signal in with multiple unbuffered outputs)

On the back of the pcb is a pair of solder points marked as "link". You can connect these (with a solder blob or small jumper wire) to turn the mult into a single 8 channel Mult instead of 2 x 4 channel.

Notes: This is the version II of the original uVCA.

This module was adapted from a design by David G. Dixon