# Sharma speaker

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The **Sharma speaker** was a rotary speaker, similar in design to the [Leslie speaker](/source/Leslie_speaker), that was manufactured in the UK by Keith Hitchcock during the 1960s and 1970s.[1][2]

## History

The name "Sharma" came from Hitchcock's two children, Sharon and Mark.[3]

Hitchcock designed the speaker to directly compete with the Leslie, and consequently it contains similar features, such as a rotating horn for treble frequencies, a drum for bass frequencies, and the same nine-pin [amphenol connector](/source/Amphenol_connector) interface as contemporary Leslies then in production. However, unlike a typical Leslie, it includes a treble and bass control, and a [line level](/source/Line_level) input.

Also, in the Leslie units the horn and bass rotor moved in opposite directions, with a fast and slow motor on each. In the Sharma units, they both rotate in the same direction, with just a fast and slow motor shared. A clutch allows the top and bottom rotors to accelerate at different rates.

The amplifier boards were made for Sharma by [HH Electronics](/source/HH_Electronics).[citation needed] Some of the early Sharma speakers had an eight-pin connector. Some models of speaker also contained rotary and stationary speakers, with separate power amplifiers, which were used on non-Hammond organs such as [Lowrey](/source/Lowrey_organ) or [Wurlitzer](/source/Wurlitzer).[4]

Sharma speakers fell out of favour due to the introduction of low-cost electronics that could emulate the rotating speaker sound.[citation needed]

## References

1. ["Hammond FAQ : Question 20"](http://midiguru.net/hammond.htm). Retrieved 8 October 2012.

1. ["Lesley not not the woman? the speaker!"](http://forum.speakerplans.com/lesley-not-not-the-woman-the-speaker_topic31794_page3.html). Retrieved 8 October 2012.

1. ["alt.music.hammond-organ : Sharma"](https://groups.google.com/group/alt.music.hammond-organ/tree/browse_frm/month/2002-05/35da1deab8323377?rnum=21&_done=%2Fgroup%2Falt.music.hammond-organ%2Fbrowse_frm%2Fmonth%2F2002-05%3F)

1. ["Organ Forum : Can I change the crossover frequency in my Sharma speaker?"](http://www.organforum.com/forums/archive/index.php?t-19747.html). Retrieved 8 October 2012.

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Adapted from the Wikipedia article [Sharma speaker](https://en.wikipedia.org/wiki/Sharma_speaker) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Sharma_speaker?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.