In PROBES #37, we consider the revolution ushered in by the thermionic valve and, in particular, the disorienting but transformative changes electrical amplification brought into a world until then predicated solely on acoustical laws. We then examine the cybernetic entanglement of its mirrored portals (the microphone and the loudspeaker) through the generative instability of feedback which, it turns out, has accessible expressive powers...
Curated by Chris Cutler.
Image: Ron Wickersham - https://archive.org/post/256492/the-betty-question-answered Schematic drawing of the grateful dead's wall of sound. Source: Wikipedia