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Physical Installation
You should install the unit in your modular system using all four screw holes. The unit is designed to
be mounted properly to avoid damage to the internal parts when plugging or unplugging cables, or
adjusting the controls.
Connection Warnings
The CLOCK IN, DIR IN and RESET IN are designed for 0V (off) and +5-10V. (on) Any voltage over
approx. +2V should enable each input. The inputs are tolerant (ver. D and later only) of any voltage
from -12V to +12V so you can safely input LFOs and other AC signals.
The CV/X and GATE/Y outputs are analog outputs driven by amplifiers. They have a low output
impedance and thus should not be driven by external sources. Please use them as outputs only, and
mix them using proper buffered mixing circuits and not by passive multiples or Y-cords. They are
short-circuit protected but may be damaged by the external input of voltages. Do not short the
outputs or connect them to any other source of voltage!
First Use
Connect the CV and gate outputs to a VCO CV input and an envelope generator gate input and let's
make some sound! The K4815 has a built-in clock generator so you can create patterns without any
external clock source. Flip the INT/EXT switch up to use the internal clock mode. If no external clock
is supplied, the CLOCK INT/EXT switch acts as a start/stop control. The CLOCK SPEED control affects
the tempo when in internal clock mode. The CLOCK LED pulsates once per beat. Note that in internal
clock mode, the notes operate at 4x the clock rate. (16th notes) In the external mode this is
adjustable, as you will see later. Make sure the CV/GATE / X/Y switch is up. (CV/GATE mode)
Choose a motion type by turning the MOTION TYPE knob. This selects the motion of the playback ball.
Turn up the MOTION LENGTH knob to maximum to play every step in the motion sequence. Adjust the
pattern type with the PATTERN TYPE knob to select where notes will play. You should hear notes being
generated as the playback ball lands on active notes on the grid. Using the MAJ / MIN and LARGE /
SMALL switches, you can choose from major or minor tonalities, as well as large and small output
spans. The GATE TIME knob affects how long each note plays, and the MOTION LENGTH knob affects
how many of the up to 64 steps in each motion sequence will play before repeating.
Play around with the controls and hear some of the different possibilities. The next section will cover
each control in more detail, as well as a more overall discussion of how the K4815 makes patterns
based on the settings that you have selected.
User Manual
// K4815 // Pattern Generator
5p
Hardware Version D/E
Firmware Version 1.1x
February 16, 2011
© 2010 Kilpatrick Audio
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