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Notes: The Utility Parametric EQ is a staple pedal that belongs in any professional's rig. There are 3 bands of EQ with frequency ranges from about 40Hz to 15kHz. Each band is an independent bandpass filter with adjustable centre frequency, quality factor, and gain. Use them to sculpt and shape your tone however you like.

The Controls:

There are 3 bands of EQ with frequency ranges from about 40Hz to 15kHz. Each band is an independent bandpass filter with adjustable centre frequency, quality factor, and gain. Use them to sculpt and shape your tone however you like.

Stomp Switch - This footswitch activates the EQ. The centre LED will be lit when the pedal is engaged.

Freq - This selects the centre frequency of the filter. The three frequency ranges are: 31Hz to 1.6kHz, 100Hz to 4.8kHz, 300Hz to 16kHz.

Q - The Quality Factor (Q) gives you control over the sharpness of the filter. Turn it up and the filter section becomes resonant and more abrasive. Low Q settings sound like a traditional EQ, higher Q adds resonant nodes. The Q ranges from about .1 to around 30.

Level - This controls how much cut or boost you have from the band. Centre it (0) and the band is out of the circuit. Turn clockwise and you'll get more of that frequency, turn counter-clockwise and you'll hear less. If all 3 controls are at 0, you should be able to click the pedal on and off and not hear any difference.

Overall Level - This gives an overall cut or boost at the output of the Parametric EQ. Like a volume control, but with some gain available.

Notes: The WMD Pro Output is a simple and purpose built module to get your modular signal interfaced with professional and consumer audio gear. It also includes a very high quality headphone driver.

Rail to rail opamps at the input stage allow for headroom above the typical eurorack levels of 20Vpp. The Pro Output can handle 23Vpp before clipping. Signals are attenuated down to the proper levels allowing for simple adjustment free connection to any type of device, professional or consumer.

The Pro Output is DC coupled through the entire signal path, including the headphone driver. This design eliminates coupling capacitors and the distortion they can cause.

Controls and I/O:

Input - The inputs are designed to accept any normal modular level. 10Vpp is the nominal operation level. The left input is normaled to the right side for mono operation. Inputs will clip at 23Vpp, giving enough headroom for any eurorack signal.

Phones/Line - The headphone driver connects to a 3.5mm stereo jack, and a 1/4" jack for whatever type of headphones you use. It can drive both simultaneously.

The headphone output level is internally limited to protect against accidental knob turns. Connect a couple of jumpers to the rear of the module to disable this limiting. This will allow the headphone amp to drive headphones extremely loudly, but still without distortion. Output quality remains the same regardless of the jumper settings.

With the limiting enabled (jumpers off), the maximum output is around -10dBV. With limiting disabled (jumpers on), the maximum output increases to pro level, about +4dBu.

Stereo - The Stereo (-10dBV) output is designed to interface directly with consumer level gear. Hook directly to sound cards, portable recorders, and speakers. It can be used as a second headphone output but will be loud.

+4dBu Bal - These two outputs (left and right) are high quality low impedance balanced line drivers. They are designed to drive long cables and to drive balanced transformer or transformerless inputs. Use these to connect directly to mixing consoles, mic preamps, or any other piece of professional outboard gear.

Notes: The WMD Quad Anti Aliasing Filter (QAAF) was conceptualized as the first epansion for the Phase Displacement Oscillator. It is designed to eliminate aliasing and stair-step distortion from the Digital to Analog converters. We opted to make this a seperate module because it is useful by itself as well as coupled with the PDO.

There are four independent filters inside the QAAF. Each -24dB/octave Butterworth filter runs at exactly the same frequency. The Butterworth filter has a small amount of resonance and a great sound. Each input jack is normaled from the expansion header that connects to the PDO, but any signal can be filtered by plugging in.

The frequency control circuitry uses a vactrol to control the clocking speed of each filter, slowing down the response to transient signals. This brings life and character to the sound.

Controls and I/O:

CV Input - This input is roughly calibrated to 1v/octave. It drives a vactrol that will cause the QAAF to open quickly and close slowly.

Freq Knob - This knob controls the cutoff directly or acts as a bias/level shift control for the CV input.

CLK - This jack serves as a clock input or output, directly controlling the filter's frequencies at a ratio of 100:1. A jumper on the back (lower jumper) selects it's mode. Jump for clock output, leave open for clock input.

Inputs 1-4 - Audio Inputs, these are normaled from the expansion header going to the PDO. This normal is broken by plugging into these jacks.

Outputs 1-4 - These jacks are for each channel's outut.

Mix - This output is a sum of each channel's filtered input.

Frequency Limit Jumper - This rear jumper (upper set of pins) will limit the low frequency cutoff to about 300Hz. This will stop the QAAF from producing aliasing noise itself as it's clock frequency will be limited to 30kHz. Jump for limiting, leave open to disable.

Notes: Intoducing the WMD Triple Bipolar VCA, the input side expansion for our Phase Displacement Oscillator. This module provides dedicated inverting/polarizing/bipolar amplitude modulating inputs normaled to the Phase Modulation inputs on the PDO.

A bipolar VCA is like a normal VCA when operated with positive control voltage. But when using a negative control voltage, the output will swing back through zero amplitude and the output will be inverted. This produces deeper modulation than a normal VCA.

The Triple Bipolar VCA is also designed to be used as a standalone module, it does not require the PDO to operate.

Notes: POLE-ZERO is a 4-pole (24dB/octave) low pass Voltage Controlled Filter (VCF) utilizing MOSFET transistors. MOSFETs are known for their soft, vacuum tube like distortion when overdriven.

POLE-ZERO is designed to exploit these characteristics with the addition of a MOSFET saturation control and provide a much wider palette of sounds when compared to a standard VCF.

A Voltage Controlled Amplier (VCA) is also a relatively novel addition and provides a simple way to amplitude modulate the filter without the need of an external VCA.

Power Draw: +20mA, -20mA. 6HP width. 25mm Depth.

Notes: MINI SLEW is a feature packed function generator and voltage controlled slew limiter.

Transient functions are generated using the rise, fall and shape controls.

Complex functions can be generated using the voltage controlled shape and vari-out via direct CV inputs.

MINI SLEW features a novel time compensation mode which permits the timing of the transient to remain relatively constant while the shape parameter is adjusted.

CV SUM mode permits a single CV patched into rise or fall to process both parameters or two CVs patched into rise and fall to be summed and applied to both parameters.

Additional features include VC cycle (toggle on/off), end of rise and end of fall outputs, FM input and an LED voltmeter for monitoring the amplitude of the direct positive output.

Power Draw: +70mA, -50mA. 8HP width. 25mm Depth.

Notes: ULTRAFOLD is a powerful voltage controlled wave folder.

The input drive and wave fold controls make up the heart of the design, providing warm saturation and additive harmonics to the input signal.

The wave shift control offsets the input signal to allow for asymmetrical folding - unveiling the subtleties in the distribution of spectral content.

The novel bipolar feedback control takes wave folding to a new level by returning the folded output to the input, thereby skewing the wave shapes for dramatic changes to the upper harmonics.

An auxiliary feedback input is provided to allow for insane folded FM sounds when another oscillator drives this input.

Power Draw: +30mA, -30mA. 6HP width. 25mm Depth.

Notes: DPLR is a delay module with two interactive delay lines, each with 750ms of delay time.

One input is split into two delays which share the total delay time (DELAY) and regeneration (REGEN). Side B has control over its delay offset (SPREAD) from side A.

Delay, Spread and Regen are all voltage controlled. Regen at max will echo indefinitely and can create interesting noise swashes.

The top knob toggles through seven different crosstalk configurations (Regen isolated by ping-pong). Press and hold to cycle through four different Regen Filter settings, from very bright to dark.

Two interactive delay lines
750mS delay time
Voltage controlled parameters
Seven crosstalk configurations
Four regen filter settings
Adjustable wet or wet/dry via jumper setting

Power consumption: 67mA at +12 V and 31mA at -12 V
Depth: 45
4 HP

Notes: OSD, aka OR SUM DIF, is 3 independent blocks of useful utility in 4HP.

OSD is centered around combining voltage in useful ways. Audio, V/Oct, and control voltage are at home in this utility. OSD offers a fully DC coupled signal path with precision components to make this happen. High quality, configurability, and compact size ensure OSD will always find it's way into your patch.

- Combine v/Oct sequences with precision summing, or enable the the precision OR circuit for completely different results.

- Mix two envelopes or an envelope and lfo using sum to create large accented voltages or combine with OR to keep the output in the original range.

- Crossfade between audio or control voltage using the potentiometer in block one. Setting DIF will invert the signal at the B jack.

What is OR, SUM, and DIF?

OR - Input voltages are compared and the higher of the two is passed to the output.

For example, if A = 4V and B = 8V, the output will be 8V.

SUM - Input voltages are added together to create the output voltage.

For example if A= 3V and B=4V, the output will be 7V. This clips at -10V and 10V.

DIF - Lower voltage source is subtracted from the higher voltage, producing an output of the difference between the two.

For example if A= 3V and B = 5V, the output will be 2V.

Controls / Configuration:

Block 1 - Sum, OR, or Difference of two inputs and effect the mix of the A input to the B input with the Knob. The third input ORs with the result of the A/B inputs.

Block 2 - Sum, OR, or Difference two inputs with a fixed mix of 50%. The third input ORs with the result of the A/B inputs.

Block 3 - 3 input OR. Mix gates or CV from three sources for some wild results.

Specs:

Size: 4hp

Depth: 40mm(with cables)

Power: 50mA +12V, 50mA -12V

All Inputs: >=100k ohm impedance .1% Resistors

All Outputs: 470 ohm impedance impedance compensated for precision.

20Vpp range

Notes: SL3KT (pronounced "Select") is a simple three-channel switch module for Eurorack Modular Synthesizers.
Three independent, two-way switches allow for users two select between different sources or destinations of both CV and Audio Signals. Useful for many tasks in a Eurorack system such as sequence selecting, CV selecting, boolean logic operations, group switching, group routing, gating, waveform mixing, and so much more!

Notes: Compact dual slew module adds slide/glide to sequences in a compact format. Includes some nice added features allowing it to work as an envelope or envelope follower.

Supplier notes:
The acid style pitch slew effect has made it to Eurorack in a small easy to use package. You no longer need to dedicate more complicated modules patched in wacky ways to achieve this classic sound. Finally, a dual slew, with the right interface, at the perfect size. Add some slide and smoothness to your patches on your own accord with Time Warp.

TIME WARP is a dual channel, gated slew module with some extra features that make a powerful and versatile addition to any Eurorack Modular Synthesizer System.

Its unique, Gated Slew function allows users to add slew to any voltage signal at designated times by sending it a gate signal from a sequencer or similar source. Switch it up with Invert Logic on the gate input, or use the switch as a real time performance tool for hands-on control over when the slew will take place.
With two modes of symmetry and a full wave rectifier on the input, Time Warp can function as 2 independent Slews, two A/R Envelopes with tied controls, or even as an envelope follower, taking audio and turning it into a useful envelope signal. CV control over the Rate of slew! Time warp puts all of that in a compact, 4hp package.

Size: 4hp (20.32mm)
Depth: 30mm(with cables)
Power: 50mA +12V, 50mA -12V

Gate Inputs:
100k ohm impedance
2V threshold Schmitt Trigger
Patching into the Gate input disables the Full Wave Rectifier

CV Outputs:
470 ohm impedance, zero-impedance compensating buffer
1V/Octave no drop
22Vpp range
Gain error: 0.1% maximum. 0.025% typical.
Offset error: 1.5mV maximum. 0.5mV typical.

Regulatory:
RoHS, CE, & WEEE Compliant
Made with Lead Free solder and processes

Notes: The Modbox is a tempo syncable modulation source with a three-phase LFO, CV Skewable LFO, Sample and Hold, and White Noise generator.

LFO 1 is a three-phase LFO with independent outputs for each phase which are set at 0, 120, and 240 degrees. Shape can be switched between Sine, Triangle, and Saw with a push of a button.

LFO 2 is a Skewable LFO with three shapes. The LFO shape can be smoothly changed from a Ramp through Triangle to Saw wave shapes. The skew shape can be changed with the Skew knob or with CV

The Sample and Hold circuit's clock is normalled to the 2nd LFO but can be clocked externally as well. The sample and hold samples voltage from and internal white noise source. There is also an input for an external sample source. White noise has its own output as well for use with other modules and applications.

Both LFOs can be sync'd to an external clock source by holding the wave shape button for different lengths of time. As they are independent of each other, one can be sync'd while the other runs free like a gazelle on an African plain.

Tempo sync calculates the time between incoming clocks and reacts instantly to each new clock pulse. Each rate knob becomes a multiplier/divider when sync is engaged.