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Circuit Boards for Klee Sequencer

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Boards  Out of Stock. In the future, these boards will be available from SynthCube. 

The electro-music Klee Sequencer is a performance and compositional tool that perhaps could be thought of as an almagm of the concept behind (but not the implementation of) the Triadex Muse coupled to a step sequencer. Klee Sequencing relies upon the composer's innate ability to discern patterns of musical worth from a variety of rhythms and pitches produced through a method that is often impossible to predict through interaction with the controls. Often, through manipulation of a single control or switch, the Klee Sequencer can reveal a new direction or approach to an already established Klee Sequence.

At the core of the electro-music Klee Sequencer is a shift register based rhythmic pattern generator capable of producing three simultaneous and unique control voltage signals along with three corresponding, unique gate/trigger signals from its integral gate bus system.

The electro-music Klee Sequencer derives these signals from bit patterns that are programmed into its two eight bit shift registers either through direct or random means. The voltage outputs are programmed using a row of 16 potentiometers. The patterns are programmed through a row of 16 switches, and the gate bus is programmed through an additional row of sixteen switches.

The electro-music Klee Sequencer is capable of acting as either a 16X1 or 8X2 "standard" step sequencer using "one bit" patterns. With multiple bit patterns, it can produce voltage/gate bus sequences of up to 32 steps. The voltage and gate patterns can be produced in a variety of modes, including full random, random/8X1, 8X2,8/16 step, and 32X1 using various combinations of external signals and mode control settings.

The integral gate bus consists of two hardwired busses (busses 1 and 3) and a logical gate bus (gate bus 2) which is a NOR function of gate busses 1 and 3. Each of the the three gate busses produces a separate trigger and gate signal. An additional gate bus, the Master Gate Bus, provides gate and trigger output signals that are synchronous with the clock signal.

The electro-music Klee requires an external clock signal - any signal that, at minimum, alternates above and below +2.5V can be used as the clock signal. This includes any waveform of an LFO, VCO, random generator, or any other control or audio signal with a signal amplitude of that range (clock signals can be bipolar or unipolar, as long as they oscillate at least above and below +2.5V).

The bit patterns, as programmed by the pattern switches, can be loaded through an external trigger signal that can be supplied by any signal of the same specifications required for the clock signal.

For random functions, the electro-music Klee Sequencer can accept any voltage that exceeds, at minimum, +0.5V. A VCO, Noise Source, LFO, S&H or any other voltage source is appropriate for this input.

External positive voltages can optionally be applied to the electro-music Klee Sequencer to control the range of the voltage patterns produced by the pattern bits/potentiometer control scheme. Bipolar signals can be applied without damage, but the Klee will react only to positive voltages. This function allows ever-changing, but correlated patterns to be produced. Devices such as sequencers, control voltage keyboards, oscillators or any any voltage source may be applied to this input.

The electro-music Klee was designed to operate from a +/-15V power supply, but can also operate at +/-12V supply rails. At 15V operation, the electro-music Klee Sequencer draws approximately 100 mA from each voltage rail.

The electro-music Klee Sequencer PCB Set includes the printed circuit cards and schematics in PDF format. Build and operation documentation is available on the electro-music forum.

Klee sequencer built by Uncle Krunkus
electro-music.com Klee Sequencer built by Uncle Krunkus using these two circuit boards.



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This product was added to our catalog on Friday 03 November, 2006.
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