Kilpatrick Audio Eurorack K6101 // Dual Envelope Module

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  • Model: K6101 // Dual Envelope
  • Manufactured by: Kilpatrick Audio

K6101 // Dual Envelope Dual Envelope Generator / Oscillator inspired by PHENOL - 16HP The two most often praised features of PHENOL are its filters and envelopes. With only three mode buttons and three controls per channel, it looks deceptively simple, yet under the hood exists one of the most unique and powerful envelope generators ever conceived. And it's not even an ADSR! But don't let that put you off. The K6101 will soon win you over with its unique and quirky personality. Features and Specs Eurorack (3U) form factor - 16HP width Dual envelope and LFO circuits based on those found in PHENOL Supports Attack-Hold-Release, Attack-Release and Oscillator modes of operation Oscillator mode supports either latched or momentary triggering Output can be normal, inverted, or absolute value (positive-going only) Flexible third control can adjust either output quantizing, gate delay, or musical quantizing of the output Output voltage range is either -5V to +5V or 0 to +5V CV input jack allows the time or speed of the envelope / oscillator to be modulated up or down by a bi-polar voltage Dedicated manual gate control for each channel Settings of mode buttons are automatically stored / recalled from non-volatile memory Requires +12V (60mA), -12V (10mA) - 16 pin Doepfer-style power cable used - approx. 0.9W total power consumption Designed and made in Canada using high quality parts. Warranty: 1 year Introduction The K6101 Dual Envelope module from Kilpatrick Audio is a Eurorack version of the famous PHENOL envelope generator. This was created by popular demand and will definitely add a new level of creativity to your modular system. Setup The K6101 Dual Envelope requires only +12V and -12V. Make sure you use a good power supply that is not overloaded. The voltages should measure as close to +12V and -12V as possible. To get something happening right away, turn the third knob on the top row all the way up. Turn the left two knobs up half way. Set the top group of black buttons so that only the top one is on. This puts the first channel into oscillator mode. Patch the OUT 1 jack to the pitch input on an oscillator. Try turning down the third knob to quantize the output! Jacks and Controls The K6101 is a dual channel unit. Other than sharing some circuitry and a panel, the two channels function completely indepedently of each other. Note that buttons are used to change modes. These settings are automatically stored in non-volatile memory and should restore the previous setting when power is applied. The function of each of the jacks is as follows: GATE IN 1 / 2 - Trigger the envelope - in oscillator mode this input can be used to momentarily trigger the oscillator CV IN 1 / 2 - Adjust the envelope time or oscillator speed - this signal will add or subtract from the current panels settings OUT 1 / 2 - The envelope or oscillator signal output - the output voltage can range from -5V to +5V - an LED above the GATE button shows the output level as red, (negative voltage) green (positive voltage) or off (near zero volts) Controls The function of each control is as follows: UP TIME / SPEED KNOB - Sets the up time (envelope modes) or oscillator speed (oscillator mode) DOWN TIME / LEVEL KNOB - Sets the down time (envelope modes) or output level (oscillator mode) THIRD KNOB - Has three possible modes which are set with the third knob mode button (described below) GATE - Button to manually generate a gate signal - also has an LED that shows when the gate is on Envelope / Oscilltor Mode Button - Top button selects between the main oscillator / envelope modes as described below Third Knob Mode Button - Middle button selects between one of three modes for the third knob Output Mode Button - Bottom button selects between one of three output modes Oscillator / Envelope Modes You can operate the K6101 channels in two different envelope modes or an oscillator mode. The modes are described below: Oscillator Mode Top mode LED will be on in this mode. In oscillator mode the output generates a triangle wave. The speed is variable using the first knob, and the output level is varied with the second knob. When you turn on oscillator mode, the gate will be latched on automatically. By pressing the gate button or inputting a gate signal, you can operate the oscillator in momentary mode. To reset the latch, turn oscillator mode off and back on again. Attack-Release Mode Top mode LED will be blinking in this mode. In attack-release mode, the output will ramp up at a time set by the first knob (UP TIME) and fade back down automatically at a time set by the second knob. (DOWN TIME) The length of the gate has no effect on the envelope output. Attack-Hold-Release Mode Top mode LED will be off in this mode. In attack-hold-release mode, the output will ramp up at a time set by the first knob (UP TIME) and stay at the maximum value as long as the gate signal is present. When the gate is released the output will ramp down with a time set by the second knob. (DOWN TIME) Third Knob Modes The third knob can be assigned to affect three different parameters. The middle mode button selects the mode. These are described below: Gate Delay Mode Middle mode LED will be on in this mode. The third knob will adjust the gate delay. When a gate signal is input or the gate button is pressed, a timeout must occur before the gate will trigger. Turn the third knob to adjust the delay. The delay only affects the gate turning on. When the gate is removed the output will change immediately. Scales Mode Middle mode LED will blinking in this mode. The third knob will adjust which one of 16 pre-programmed scales and arpeggios are used to quantize the output. The output is calibrated by design but might not be exactly 1V/octave. Steps Mode Middle mode LED will be off in this mode. The third knob will adjust the amount of quantization or the number of steps in the output. The range goes from 2 steps (minimum setting) to fully smooth. (maximum setting) Output Modes The output can be presented in three different ways based on the setting of the third mode button. These modes are described below: Inverted Output Mode Bottom mode LED will be on in this mode. In this mode the output will be inverted. Instead of ranging from -5V to +5V, the output will range from +5V to -5V. When the envelope or LFO is not running, the output will sit at +5V. Absolute Value Mode Bottom mode LED will be blinking in this mode. In this mode the output will produce an absolute value and will only go from 0V to +5V. By using the Steps mode in the lowest setting, you can create +5V pulses and gates to drive other modules. Normal Mode Bottom mode LED will be off in this mode. In this mode the output will range from -5V to +5V. When the envelope or LFO is not running, the output will sit at -5V. Audio and Control Voltages Kilpatrick Audio strives to make products with the most convenient and universal voltage standards possible. We believe in the approach that everything should be able to patch into everything and therefore all our modules are based around the most universal -5V to +5V range. Pulses and gates are 0V off / +5V on. Pitch voltages range from -5V to +5V and use the standardized 1 volt per octave scaling. Audio, LFO and envelope voltages also range from -5V to +5V. This gives the absolute best compatibility between different module types. Our non-Eurorack products also follow this same system. Whenever you see an offset control on one of our modules that is mixed with a CV input, there is an easy way to picture how it works. Simply imagine the offset control setting the value of the particular function with no input signal. (or a 0V input signal) Putting a CV signal into the corresponding input jack will simply add or subtract from this offset setting. Some inputs have attenuator controls (we call them LEVEL) that allow you to scale the input signal. This simply scales down the input signal before it can affect the internal circuitry.

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