LIGHTFOOT LABS: GK3 Quick Guide
Waveform Select Knob:
Select between 6
standard waveform shapes and 5
user-defined waveforms.
Depth / Wave Knob:
This is a dual function
knob. The first is that it functions as a depth
adjustment. The second is that it determines
the amplitude level when using the
Waveshape Record function.
Time Division/Sequence Knobs:
Skip the current step and go to the next ( >>)
Multiply the LFO's rate by the number (1 through 16)
Full amplitude ( F ), Minimum amplitude ( M ), Random ( R )
Bypass / RST SEQ Switch:
This switches
the effect in and out. It will also reset the
sequencer to the first active step in the
sequence. That is, the first step that's not
set to the ( >> ) position. The top middle LED
indicates Bypass status.
Tap Tempo Switch:
This sets the LFO rate
by measuring time between taps. The range
is approximately 200 milliseconds to 6
seconds. Tap twice to set.
DC IN:
Use a 9V negative tip (Boss style)
power supply. One-spot and Godlyke daisy
chain supplies work fine.
VOL Knob:
Adjusts the output volume.
LFO OUT:
This jack outputs Goatkeeper's LFO as a 0 to 5V control voltage signal. The LFO will be at
the full range with the depth knob at its full clockwise position.
SYNC IN:
Input an audio click track from a sequencer/metronome/drum machine/etc to sync Goatkeeper.
The source should be a short "click" or "blip" type sound. Sounds with long decay or reverb will not work
reliably. Adjust the source's volume so that Goatkeeper is locked in Sync (Sync In should over-ride
tap tempo and Expression/CV control).
EXPR IN:
Expression/ Control Voltage input. Use an expression pedal with Tip-Ring-Sleeve plug or Control
Voltage from 0 to 5V to control Goatkeeper's LFO rate. LFO rate with this input ranges from approximately
.05 Hz (20 seconds - sequence knob set to 1) to 300 Hz (sequence knob set to 16).
Using the Waveshape Record Function
The Waveshape Record function allows for an LFO waveform to be created and stored in each of the A - E
positions of the Waveform Select Knob. Once the function has been initiated by pressing and holding both
the Bypass and Tap Tempo switches, the right two sequence LEDs will start to flash, indicating the mode
has been entered. At this point, moving either the Depth knob or Expression input will select it as the
recording source. When ready to record the waveshape, press and hold the Bypass switch. Movements
will be recorded as the amplitude of the waveform. Recording ends when the Bypass switch is no longer
depressed, or after approximately 8 seconds.
Use the flashing LEDs to help time the waveshape. Try to keep your created waveforms fairly simple.
A complex waveform will be distinguishable only at slow LFO speeds. If using an expression pedal to
record waveshapes, press the Tap Tempo switch after Waveshape Record has been armed with the
expression pedal in the max position. This will calibrate so that the pedal's maximum postion corresponds
to maximum amplitude. This calibration is lost when Goatkeeper is powered off.
Special Thanks: Yudy Chen, Dave Gill
Designed by Austin Lightfoot
lightfootlabs.com
Preamp Gain Knob (Internal):
Adjusts
the preamp gain. Set to zero during assembly.
