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BASTL
INSTRUMENTS
KASTLE
DRUM

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Summary of Contents for Bastl Instruments KASTLE DRUM

  • Page 1 KASTLE DRUM BASTL INSTRUMENTS...
  • Page 2 KASTLE DRUM The Kastle Drum is a special edition of Bastl’s classic mini modular synth focusing on algorithmic industrial glitchy drums. How do you generate rhythm on a patchable drum machine that has neither buttons, nor a programmable sequencer? You discover it! Drum sound synthesis with a unique dynamic acceleration charged envelope makes this rhythm box surprisingly versatile and extremely fun to play.
  • Page 3 Kastle Drum Features 8 drum synthesis styles ”noises” output for less tonal content DRUM selects drum sounds acceleration charge dynamic envelope decay time PITCH control with offset and CV input with attenuator voltage-controllable clock with square and triangle output stepped voltage generator with random, 8 step and 16 step loop mode 2 I/O CV ports that can be routed to any patch point...
  • Page 4 0 POWER UP Find a microUSB cable or go to your nearest store and buy 3 AA batteries. Connect the USB cable to a  powered 5V USB socket or insert the batteries to the battery compartment the right way - as indicated on the battery holder. Flip the power switch to the USB or BATT position based on which power source you are using.
  • Page 5 fm, and experimental that are selected with the DRUM knob (top right) and modulated with the DRUM MOD socket.The DRUM MOD knob controls the amount of the modulation. Making Drum Beat DRUM DRUM DRUM DRUM DRUM DRUM DRUM8 DRUM7 DRUM6 DRUM5 DRUM4 DRUM3...
  • Page 6 There are 2 ways to trigger or “charge” the main envelope that will produce an audible sound. The envelope is always discharging at the rate set by the DECAY knob. The center position of the DECAY knob results in short, snappy envelopes and turning it counter-clockwise increases the depth of modulation applied to both pitch and amplitude, as well as the decay of the modulating envelope.
  • Page 7 Modulating the DRUM MOD input and opening the DRUM MOD potentiometer will also charge the envelope depending on the acceleration in the input voltage. If a big difference of voltage is registered in a  short amount of time, the envelope will charge by a lot (stepped voltage or pulse signal) and if smoother signals are detected (triangle waveform), it will gradually charge the envelope by smaller increments, resulting in an attack envelope shape.
  • Page 8 Quieter envelope is produced when transitioning from zone 1 to 3 or back. Modulating the DRUM MOD socked does not trigger the NOISES output but modulating the PITCH MOD does. It means that by modulating these inputs, DRUMS and NOISES can be triggered independently. 8 MINUS AND PLUS These patch points can be useful to set the FEED pin.
  • Page 9 generates an 8-step pattern. When it is high (or connected to “+” patchpoint), it keeps generating a random pattern and when it is altering, it generates a semi-random pattern. The PATTERN output is useful for modulating every single parameter of the Kastle synth or any external device with the I/O port.
  • Page 10 more info and video tutorials www.bastl-instruments.com...