Leslie 145

The Leslie 145, introduced in the 1960s, is one of the most iconic rotary speaker cabinets in music history. Designed as a smaller, more portable version of the Leslie 147, the 145 features a two-speed motor system that creates its signature tremolo (fast) and chorale (slow) effects. It houses a rotating horn for high frequencies and a rotating drum for bass frequencies, producing the rich Doppler modulation that defines the Leslie sound. Originally intended for use with Hammond organs, the Leslie 145 was quickly adopted by guitarists and other musicians for its lush, swirling tones. Despite its large size and weight, it remains a highly sought-after piece of gear for its unparalleled analog modulation.

Historical Development

Origins: The Leslie 145 was developed as part of Donald Leslie's line of rotary speaker cabinets, which he began manufacturing in the 1940s to enhance the sound of Hammond organs. By the 1960s, models like the 145 and 147 became staples in studios and live performances.
Design: The 145 is functionally similar to the Leslie 147 but has a slightly smaller cabinet, making it more portable while retaining its full-range sound.
Legacy: Though production ceased after Hammond acquired Leslie in the 1980s, vintage units remain highly prized by musicians and collectors.

Notable Players

Eric Clapton (Cream): Used a Leslie speaker, including models like the 145, to achieve the shimmering, chorus-like tone heard on tracks like "Badge" .
David Gilmour (Pink Floyd): Incorporated it into his rig for atmospheric effects on songs like "Breathe" and "Us and Them" .
Stevie Ray Vaughan: Known for using rotary speaker effects to add depth to his blues guitar tones.

Popular Settings

The Leslie 145's two-speed motor allows for versatile modulation:

Slow Chorale: Ideal for subtle, ambient textures; often used with clean tones or organ sounds.
Fast Tremolo: Creates dramatic, swirling effects perfect for solos or psychedelic passages.
Balanced Setup: Use both speeds dynamically to transition between calm and energetic sections in a performance.

Legacy

The Leslie 145 remains a cornerstone of rotary speaker design, celebrated for its warm analog modulation and versatility. Its adoption by legendary players like Eric Clapton and David Gilmour cemented its place in music history. Modern digital recreations and pedals emulate its sound, but vintage units are still cherished for their authentic tonal character. Whether used with organs or guitars, the Leslie 145 continues to inspire musicians across genres.