---
id: telharmonium
title: "Telharmonium"
year: 1897
category: "Synthesizers"
lang: en
canonical: https://nodemusic.cc/node/telharmonium
source: node.music
---

# Telharmonium (1897)

Synthesizers · https://nodemusic.cc/node/telharmonium

## Summary

200 tons of copper and steel. Thaddeus Cahill built a monster that generated music using huge dynamos. The sound was transmitted not through the air, but via telephone wires to New York restaurants. It was the first streaming, 100 years before Spotify.

## Full text

If the business side of Cahill's project was bold, the engineering was bordering on madness. The Telharmonium was based on additive synthesis, implemented half a century before computers with pure mechanics: 145 gigantic rotors generated sound that was mixed like colors on a palette.

The main challenge for the performer was the keyboard. Striving for scientific purity, Cahill rejected tempered tuning, forcing musicians to play on 36 keys per octave. When the 200-ton machine was moved to Broadway in 1906, it required 30 railroad cars.

One of its biggest fans was Mark Twain, who said he had "postponed death to hear this." Physics killed the project: the massive signal bled into telephone lines, and Wall Street bankers picking up the phone for serious deals heard Rossini overtures instead of their partners — enraging the telephone companies enough to bury the invention.

## People

- Thaddeus Cahill (1867–1934) — American inventor.

## Connections

### Influenced

- [The Voder (Bell Labs)](https://nodemusic.cc/node/voder.md) - EVOLVED

Wikipedia: https://en.wikipedia.org/wiki/Telharmonium