Leslie Speaker-- is a combined amplifier and two-way loudspeaker that projects the signal from an electric or electronic instrument, while modifying the sound by rotating the loudspeakers. It is most commonly associated with the Hammond organ, though it was later used for the guitar and other instruments. A typical Leslie speaker contains an amplifier, and a treble and bass speaker—though specific components depend upon the model. A musician controls the Leslie speaker by either an
Rotary Leslie Speaker Horn rotates on top. Bass speaker fires into rotating drum at bottom. There are slow & fast speeds of rotation. I like the in between, like turning on a fan then off quickly. Very moving sound!