Avalanche Rhytmic Oscillator

TABØR is a rhythmic analogue sound-source based on the unpredictability of four avalanche transistors in a continuous oscillation state.
These unpredictable core oscillators are related to each other and their charge and discharge cycle creates complex rhythmic sound textures that can be controlled and triggered with external CV inputs to add more contamination.

Features
Four avalanche oscillators with two controls each:
F: regulates the distance between the single sawtooth waves
M: the amount of cross-modulation of each core with the others

Each oscillator has a defined role and acts differently depending on the state of the others:
OSCILATOR 1: is the most percussive and predominant, the beat.
1F this is the frequency control of oscilator 1
1M this is the cross-modulation mix control of oscilator 1
OSCILATOR 2: is obedient to the oscilatror 1 rhythmically
2F this is the frequency control of oscilator 2
2M this is the cross-modulation mix control of oscilator 2
OSCILATOR 3: is strictly related to 2 but can set-aside 1
3F: this is the frequency control of oscilator 3
3M: this is the cross-modulation mix control of oscilator 3

Due to its autonomy from the beat and to keep the communication balanced it’s lacking the F and M control potentiometers. Its values can be changed only with external input CVs

OSCILATOR 4: can act as a shutter to filter, change or interrupt the whole communication
4F: this is the frequency control of oscilator 4
4M: this is the cross-modulation mix control of oscilator 4

these variables can all be controlled individually with vactrol CV inputs
Visually you can see the "beating" oscillators in the transparent circle in the middle of the module.

To start oscillate and communicate the sound engine needs around 16v to 22v and any value below that point will stop hierarchically its operation:
RM: this input act as an attenuator to the oscillators, limiting their power supply

A dummy cable in this input will shut down the oscillators due to the inverted-vactrol configuration of this input

The result of the whole sound engine is given in three different outputs:
TR: a “squarified” always positive 0-7v trigger / cv source
NM: the dry audio signal straight out of the oscillators
ZZ: an auxiliary fuzzed output from the internal diode-based distortion circuit

more info at jolinlab.com/tabor and on our IG @jolinlab

www.jolinlab.com/tabor

• 65 mA +12V
• 7 mA -12V
• 0 mA 5V
• 55 mm Depth

Available as an assembled Module and as a DIY project.

This Module is currently available.