Posted on

ANGLE GRINDER from Schlappi Engineering now in stock – quadrature sine wave oscillator, LFO, filter, and distortion effect!

Schlappi Engineering Matttech Modular 21.12.18

The new – and franky bonkers – module from Schlappi Engineering is now in stock: the ANGLE GRINDER!

Following on from the equally gnarly INTERSTELLAR RADIO, the ANGLE GRINDER is a quadrature sine wave oscillator, LFO, filter, and distortion effect. The function of the Angle Grinder depends on both the position of the knobs and the presence of an input signal.


AVAILABLE TO PURCHASE HERE


FEATURES INCLUDE:

  • Quadrature Sine wave VCO with four phase related outputs: 0°, 90°, 180°, 270°
  • HIGH range from 10Hz to over 20kHz
  • LOW range from 0.3Hz to over 600Hz
  • Tracks 4+ octaves of volts per octave at the V/OCT input
  • FM1 is selectable linear or exponential FM via jumper on back
  • FM2 is additional exponential V/OCT jack
  • With no input GRIND section provides voltage controlled harmonic content
  • With input GRIND section compares each phase against GRIND IN signal
  • Each slider subtracts the compared signal from the input signal, creating complex waveshapes
  • When GRIND is fed into the SPIN section the outputs become a state variable filter
  • DAMPING counteracts the oscillation and allows an external signal through
  • When filtering the four phase related outputs are: LOW PASS, BAND PASS, HIGH PASS, and INVERTED BAND PASS
  • When filtering the GRIND section is a nonlinear feedback network for harsh and unpredictable timbres
  • The four phase feedback paths can be separately voltage controlled
  • The INJECT jack can be used as a second input for either audio or CV, bypassing GRIND
  • All analog OTA based design