Aeolus Seeds

Quadraphonic processor: four VCAs and their modulators

Shakmat Modular · 10 HP · 3U

TIME+: normal time range (TIME+ unlit)
TIME+: TIME+: slower modulations, an incoming clock divided by 4 (TIME+ lit)
SYNC: SYNC resets the modulators (SYNC unlit)
SYNC: SYNC clocks the modulators (SYNC lit)
MODE: Quadrature Sine: four sine LFOs, 90 degrees apart
MODE: Square LFO: each output gated in turn by a quarter-width pulse
MODE: Decays: decay envelopes triggered in turn (TIME the period, DEPTH the decay)
MODE: Attacks: attack envelopes triggered in turn (TIME the period, DEPTH the attack)
MODE: Random: random linked pans, stepped clockwise, slewed counter-clockwise
MODE: Granuliser: random openings, harsh clockwise, smooth counter-clockwise
MODE: additional mode, XY: TIME the X position, DEPTH the Y position (MODE held 2 s)
MODE: additional mode, Polarity: TIME the angle, DEPTH the distance (MODE held 2 s)
MODE: additional mode, Stereo: two stereo signals, TIME the gain, DEPTH the pan (MODE held 2 s)
MODE: additional mode, Stereo VCAs: TIME the gain of VCAs 1 and 2, DEPTH of 3 and 4 (MODE held 2 s)
MODE: additional mode, Quad Volumes: DEPTH the four channels' volume (MODE held 2 s)
MODE: additional mode, Quad VCAs: the four CV inputs each set a VCA's gain, the knobs disabled (MODE held 2 s)
CNFG: Circle: the four speakers independent, round in a circle
CNFG: Infinite: the four speakers independent, along an infinity sign
CNFG: Eight: the four speakers independent, along a figure eight
CNFG: Left/Right: the speakers linked by pairs, left and right
CNFG: Front/Back: the speakers linked by pairs, front and back
CNFG: Diagonal: the speakers linked by pairs, across the diagonals

Panel · 50.8 × 128.5 mm

Description

A 10 HP quadraphonic processor (discontinued): four analogue VCAs driven by four modulators, to move a sound round four speakers, pan two stereo signals, or morph between four sources at its SUM output.

Key features

  • Six modes: quadrature sine and square LFOs, granuliser, decays, attacks and random; six more held on MODE: XY, polarity, stereo, stereo VCAs, quad volumes and quad VCAs
  • Six configurations, the path the sound takes: circle, infinite, eight, left/right, front/back and diagonal
  • TIME: speed and direction of the rotation, frozen at noon; DEPTH: from a constant gain to full modulation
  • SYNC: resets the modulators, or clocks them; TIME+ for slower modulations
  • CV OUT: the modulation's distance, angle, X, Y, first channel or mean; SUM: the four outputs mixed
  • Bipolar CV inputs for TIME, DEPTH, MODE and CNFG; IN 1 normalised to IN 2, 3 and 4, IN 2 to IN 4

Manufacturer page →