RYO - VC Sequencer - DIY Full Kit

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115,00 €
incl. 20% VAT
plus shipping and handling


in stock, immediately available

  • Model:
  • Manufacturer: RYO - Ljunggren Audio

Compact 8-step sequential voltage source in 10hp with classic forward/backward operation using a clock, and any kind of pattern you like using control voltage levels scaled to each step of the sequencer, allowing the waveform you feed it with to determine the running pattern.

Examples of this would be a ramp to make it go forward, saw to go backward, triangle for pendulum, S&H'd noise for random etc. You could also use another sequencer's pattern to control the pattern of the VC Sequencer, the possibilities for exploration are many.

All low latency CMOS and Opamp circuitry. No software or micro processors.

It can keep sync above audio rates. Overall latency on version 1.3 is ca 5us (0.005ms) until the step changes + up to ca 10us (0.01ms) to change the volt (bigger change = longer time).

In version 1.3 the CV mode got an improvement allowing it to reach thru the whole audio range. Effectively extending the VC Sequencers funtionality into also being a 3 bit hands on waveshaper.

In FWD/REV mode the CV/Clock input use a schmitt trigger that turns from low to high at ca 2.5V and from high to low at ca 2.3V (a window of 0.2V or 200mV), the same window applies to the Reset input.

In CV mode the CV/Clock input use a set of 7 schmitt triggers with a window of ca 10-15 mV (0.01-0.015V). The first step don't need it's own schmitt trigger. Each step is separated by ca 0.625V.
Expanders will offer chaining of 2 VC Sequencers for 16 step operation and unlimited extra parallel channels of CV or gate/trig, for example our first expander that have individual gate or trig outs for each step in 4hp. The 16 step expander will add an extra latency and lower the maximum clock frequency in 16-step mode.

The VC Sequencer Kit contains 3 PCBs to be populated with components. It might not be suitable for one of your very first builds as it is a little larger build and there are connections between PCB's.

Kits comes supplied with PCB, front panel (PCB material), component kit, knobs, power cable and mounting screws. Solder and tools are not supplied.

Note! Building these DIY kits happens on your own risk. We can't do support or give a guarantee for correct function, because that depends on your own skills. Be responsible and check the building instructions before you buy. Thank you!

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