Earthquaker Devices Afterneath Eurorack Module User Guide

Earthquaker Devices Afterneath Eurorack Module User Guide

Installation

1.  Power off and unplug your Eurorack case or power supply, and locate 16hp of empty space within your system.
2. Connect the 10-pin end of the included ribbon cable to the power pin header on the back of your Afterneath module so the red stripe on the cable is oriented towards the words “Red Stripe” that are printed on the circuit board. Connect the 16-pin end of the ribbon cable to the bus board of your Eurorack case according to the specifications of your case or bus board manufacturer. Be certain that you have oriented your cable properly or you may cause damage to your module or system.
3.  Affix the module to your case with mounting screws that are compatible with your case, and cover any remaining open space with blank panels.

Tech Specs

• Width: 16 HP / Max Depth: 31.75 mm
• Current Draw: 95 mA from the +12v rail, 0 mA from both the -12v and +5v rails
•  Standard 10-pin Eurorack power connector with a marking to notate the negative pins
•  Skiff friendly – protrudes less than 1.25 inches (31.75 mm) behind the panel with the power header installed
• Audio input capable of handling input signals ranging from instrument-level to modular-level, depending on the setting of the Input knob

Controls

1. Input: Adjusts the level of the incoming signal to allow for signals ranging from instrument level (clockwise) to modular-level (counterclockwise).
2. Dampen: Controls the tone of the wet signal. Clockwise for darker tones, counterclockwise for brighter tones.
3. Reflect: Controls the regeneration of the reverb, turn clockwise for more wash and echoes, counterclockwise for less. This will self-oscillate if turned up high.
4. Mix: Controls the amount of wet signal that is mixed with the dry signal. Though it does not actually go completely wet, you can achieve a fully wet signal by engaging the Dry Kill switch.
5. Dry Kill: Eliminates the dry signal from the output, leaving only the wet signal.
6. Drag: This digital reverb is made up of a bunch of short delays. Drag separates the delay lines creating a stuttering, pingy effect. This is the coolest control on the Afterneath. We highly advise slowly turning this while you let notes ring out for a cool warped speed effect. The effect is more delay-like as you turn it counter clockwise, and it is more reverb-like as you turn it clockwise. You will achieve shorter delay times as you move the control clockwise, and longer delay times when you turn the control counterclockwise. You will notice a change in pitch when adjusting this control with sound present in the effects buffer, or when the effect is self-oscillating.
7. Mode: Controls the behavior of the Drag control as well as how it responds to control voltage.
   There are 9 different modes.
8. Diffuse: Smooths and diffuses the delay repeats. Sharper transients with more attack counterclockwise, more ambient, reverb-like and washy as you turn it clockwise.
9. Length: Controls the decay length of the reverb.
10. Mode LED: Visually indicates the current mode.
11. Drag CV Inverting Attenuator: Attenuates or inverts the incoming CV. The CV is at unity gain when the attenuator is fully clockwise, inverted when it is fully counterclockwise and the CV is completely attenuated when the attenuator is in the 12 o’clock position.
12. Mode CV Inverting Attenuator: Attenuates or inverts the incoming CV. The CV is at unity gain when the attenuator is fully clockwise, inverted when it is fully counterclockwise and the CV is completely attenuated when the attenuator is in the 12 o’clock position.
13. Diffuse CV Inverting Attenuator: Attenuates or inverts the incoming CV. The CV is at unity gain when the attenuator is fully clockwise, inverted when it is fully counterclockwise and the CV is completely attenuated when the attenuator is in the 12 o’clock position.
14. Length CV Inverting Attenuator: Attenuates or inverts the incoming CV. The CV is at unity gain when the attenuator is fully clockwise, inverted when it is fully counterclockwise and the CV is completely attenuated when the attenuator is in the 12 o’clock position.
15. Drag CV Input: Allows modulation of the Drag control using external CV.
16. Mode CV Input: Allows modulation of the Mode control using external CV.
17. Diffuse CV Input: Allows modulation of the Diffuse control using external CV.
18. Length CV Input: Allows modulation of the Length control using external CV.
19. Audio Input: Accepts audio signals ranging from instrument-level to modular-level, using the Input knob to adjust the level.
20. Reflect Send: Allows external patching and processing of the Reflect feedback path. Patching from this output does not interrupt the internal feedback path.
21. Reflect Return: Allows return of the externally patched and processed Reflect feedback path. Please note that processing of the Reflect feedback path can easily result in self-oscillation when processing with effects such as distortion or a resonant filter. Patching a cable to this input will disconnect the internal feedback path, but the Reflect Send will still be active.
22. Audio Output

Voltage Control 
When using control voltage, the knob associated with that parameter will act as an offset. Therefore, you will want to adjust the knob and the dedicated inverting attenuator to bring the control voltage to the desired operating range for the parameter. It is helpful to start with the knob in the 12 o’clock position and the inverting attenuator fully clockwise, and adjust as necessary

Self-Oscillation

When you combine the self-oscillation with CV control over the Drag parameter you have an interesting voltage controlled oscillator. Modes 3-9 will allow the self-oscillation to track volt/octave scaling. When using an external control voltage, the Drag knob acts as an offset control for the incoming voltage. Due to the nature of the effect, the Drag parameter responds to only positive voltages between 1.6 and 4.1 volts. When using a voltage between 0 and 1.6 volts, you can turn the Drag knob clockwise to offset the incoming voltage to the response range. Please note that bipolar signals may need additional offset voltage from an external source to bring the entire control signal within the response range.

For Volt/Octave Tracking During Self-Oscillation 

1. Turn the inverting attenuator for the Drag CV input fully clockwise, and the Drag knob to 12 o’clock.
2.  Select one of Modes 3-9.
3.  Find the range of your CV source (Volt/Octave keyboard, for example) that is having an effect on the drag control. Pick the highest note that you wish to play in that range and play it repeatedly while turning the Drag knob back and forth until you find the upper limit of the control. Place the Drag knob at the point at which it just passes the point where it no longer has an effect on the scale.
4. Lower the Length and Reflect knobs until the self-oscillation is no longer present

Modes

1.  Unquantized: Smooth, unquantized response over the operating range
2.  Unquantized with Slew: Smooth, unquantized response over the entire operating range, but with a musical slew that is reminiscent of turning the varispeed knob on a vintage British tape delay. The “Drag” will lag behind the knob or CV changes, but then quickly catch up.
3. Unquantized Volt/Octave: Smooth and unquantized, yet scaled to align with the 1v/octave curve to allow melodic modulation of audio in the buffer, or control the frequency of self-oscillation like a voltage controlled oscillator
4.  Chromatic Scale: Quantized 1v/octave to
   the chromatic scale
5. Major Scale: Quantized 1v/octave to the major scale
6. Minor Scale: Quantized 1v/octave to the minor scale
7. Pentatonic Scale: Quantized 1v/octave to the pentatonic scale
8. Octaves & Fifths: Quantized 1v/octave to omit all but octaves and fifths
9. Octaves: Quantized 1v/octave to omit all but octaves

REFERENCE LINK

https://www.earthquakerdevices.com/