Rob Hordijk Triple-Input 24dB Filter

Contact Rob directly for details about his designs: rhordijk@xs4all.nl.

Rob also has his own subforum at the Electro-Music forum site: http://electro-music.com/forum/index.php?f=185

Most designs use SSM quad VCA chips, possibly Analog Devices SSM2164.

HRM VCO The Hordijk vco can morph from waveform to another because it builds up the harmonic content from a sine and cosine waveform. You can morph with cv from sine to triangle if i remember right with cv if i remember correctly. Witch really sounds nice and the pwm was kinda done like that.

Dual Phaser  385 Euro The phaser module can do waveshaping and ring-modulation, and can also act as a VCF. It can perform spread-modulation. It is an OTA phaser (8 pole and 2 in a module.) When nothing patched into phaser 2 the second phaser goes parallel to phaser 1 with the input inverted. With the same settings, you get almost full cancellation from the output.

- Patch Matrix

The active patchmatrix basicly works like and ems synthi. It comes with mono-plugs and some have resistors build in for -6db or -12db reduction off the signal. But the cooles part is that every point is basicly an insert and with an insert cable you can patch whatever you like into that point! The matrix is buffered A little under 500 euro.

- Dual Envelope Generator