4 HP
25 mm deep
Current Draw
30 mA +12V
15 mA -12V
? mA 5V
$119 Price in €

This Module is currently available.

4hp Thru-zero Oscillator

This is the smallest oscillator in our COCO system.

Brooks is a 4hp thru zero oscillator. It still packs in a lot of features but will work better in most cases as the 2nd and/or 3rd oscillator in the system. Key features:

  • Thru zero FM oscillator
  • Tuning switch enables ranges of 0V, 3V, and 6V
  • Tuning knob offers 4 octave range, when coupled with the switch you get a full 10 octaves.
  • Both hard sync and time reverse (soft sync)

The chip used for the core of this module is the SSI2130, which has a tendency to lock up on startup when the power rails come up asymmetrically, which is most common in Intellijel power supplies. I did my best to fix this but there may still be instances where the unit locks up on startup. If you end up in this state, just flip the LFO/VCO switch to get it behaving.

Thanks to Neil Johnson at Sound Semiconductor for being so helpful in creating this.


submitted Sep 23rd 2022, 02:55 by Acetate | last Change Sep 25th 2022, 19:07 by Acetate

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