MATRIXSYNTH: The Rock Drill 4069

Wednesday, August 10, 2016

The Rock Drill 4069

Published on Apr 6, 2016 alphabetadragon

"The Rock Drill 4069 is the new synth kit from This beginner-friendly kit is touch controlled and makes some of the meanest sounds around. PS - sorry about the clicks - these are some problems with my recorder and aren't true to the real sound."

via this auction

"The Rock Drill 4069 is a touch-driven synthesizer with a unique look and a mean sound. The deceptively simple circuit creates an amazing range of organic sounds in response to the connection between the performer and the touch pads. The project involves no microcontrollers and relies entirely on classical electronics being pushed in to interesting distorted operation for its effects. The sounds produced are a mixture of the expected and controllable and the totally unexpected as the system tips in to chaos. The sound is always raw and menacing.

Inspired by designs like the Electronic Dream Plant Wasp synth the Rock Drill 4069 uses a standard logic chip from the 1980s in a very original and unconventional way. Technically the circuit consists of two interacting oscillators, one audio frequency and one low frequency, driving an distorting amplifier. The touch pads make the player's body part of the circuit and provide many levels of feedback and connection between control voltages and signals in the system. The Rock Drill 4069 is powered by a 3 Volt coin cell and is completely safe in operation."

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