🛠️ Invention or technique

Leslie speaker

Altavoz Leslie

Date
1940 · confidence medium
Place
Los Angeles, California, United States
Credited to
Donald Leslie
Field
Communication

What it is

A rotating speaker combining an amplifier with a rotating drum or horn in front of the driver, created by Donald Leslie to give the Hammond organ a pipe-organ-like vibrato and chorus effect.

What it led to

  • Signature Hammond organ sound in jazz and rock
  • Adoption by electric guitarists and producers
  • Electronic effects simulating the rotating speaker

Links

Sources✓ verified 2026-09-28