Eminent Technology is American

audio electronics Audio most commonly refers to sound, as it is transmitted in signal form. It may also refer to: Sound *Audio signal, an electrical representation of sound *Audio frequency, a frequency in the audio spectrum *Digital audio, representation of sound ...

company based in

Florida Florida is a state located in the Southeastern region of the United States. Florida is bordered to the west by the Gulf of Mexico, to the northwest by Alabama, to the north by Georgia, to the east by the Bahamas and Atlantic Ocean, and to ...

, established in 1983 by Bruce Thigpen. Their first product was an air bearing straight line tracking

tonearm A phonograph, in its later forms also called a gramophone (as a trademark since 1887, as a generic name in the UK since 1910) or since the 1940s called a record player, or more recently a turntable, is a device for the mechanical and analogu ...

for phonograph playback, and was the first implementation of a captured air bearing for tonearm use. It was followed by a more advanced version of the tonearm. In 1985 the company began developing planar magnetic loudspeakers and in 1987 introduced the world's first full range push-pull planar magnetic loudspeaker, the LFT-3. Another of the company's products is the Thigpen

Rotary Woofer A rotary woofer is a subwoofer-style loudspeaker which reproduces very low frequency content by using a conventional speaker voice coil's motion to change the pitch of an impeller rotating at a constant speed. The pitch of the fan blades is control ...

. Typical

subwoofer A subwoofer (or sub) is a loudspeaker designed to reproduce low-pitched audio frequencies known as bass and sub-bass, lower in frequency than those which can be (optimally) generated by a woofer. The typical frequency range for a subwoofer i ...

products are inefficient at producing desired sound pressure levels at frequencies below 20 Hz, but the TRW is designed to cover the range down to 1 Hz of the

sound spectrum In the physical sciences, the term ''spectrum'' was introduced first into optics by Isaac Newton in the 17th century, referring to the range of colors observed when white light was dispersed through a prism. Soon the term referred to a plot ...

. (The technical principle would allow even zero Hz.) In the 90s Eminent Technology developed a smaller planar

transducer A transducer is a device that converts energy from one form to another. Usually a transducer converts a signal in one form of energy to a signal in another. Transducers are often employed at the boundaries of automation, measurement, and cont ...

for automotive applications. This was adapted for computer speakers as the LFT-11, a multimedia speaker system, The company licensed the technology to Sonigistix and it appeared in

Monsoon A monsoon () is traditionally a seasonal reversing wind accompanied by corresponding changes in precipitation but is now used to describe seasonal changes in atmospheric circulation and precipitation associated with annual latitudinal osci ...

and other brands.History of Eminent Technologies
retrieved March 11, 2009 Currently five US patents have been granted to Eminent Technology products. The company manufactures most of its products at its own facility in

Tallahassee Tallahassee ( ) is the capital city of the U.S. state of Florida. It is the county seat and only incorporated municipality in Leon County. Tallahassee became the capital of Florida, then the Florida Territory, in 1824. In 2020, the population ...

, Florida.

References

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External links

Rotary Woofer
site

site
Sound and Vision review
discussion of Bruce Thigpen's contribution to turntable tonearm development, the linear-tracking tonearm
Michael Fremer
writeup on Eminent Technology and the Rotary Woofer breakthrough

Phonograph manufacturers Loudspeaker manufacturers Audio equipment manufacturers of the United States