turntable


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turntable

1. the circular horizontal platform that rotates a gramophone record while it is being played
2. a flat circular platform that can be rotated about its centre, used for turning locomotives and cars
3. the revolvable platform on a microscope on which specimens are examined
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

turntable

[′tərn‚tā·bəl]
(engineering acoustics)
The rotating platform on which a disk record is placed for recording or playback.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

turntable

A playback machine for vinyl phonograph records, which were a major music distribution medium throughout the 20th century. The turntable contains a rotating platter for the disc and an arm that holds a cartridge and needle (stylus). The needle is a diamond chip attached to a metal cantilever that causes a coil or magnet to move inside the cartridge as it bounces along the sound wave undulations "carved" in the V-shaped grooves of the vinyl.

Records Degrade With Usage
A major problem with vinyl records is the wearing of the inner surfaces of the groove by the needle. Over the years, an enormous amount of mechanical engineering went into the design of turntables and needles that would accurately track the grooves with as little pressure as possible.

Still Made
Analog turntables are still being made and used by people who have extensive vinyl record collections as well as by disc jockeys (DJs). See vinyl record, record player, LP, Laser Turntable, USB turntable and DJ turntable.


The Modern Turntable
Popular for decades, Technics turntables were the first to include variable pitch control, which DJs use to create special sound effects. (Image courtesy of Panasonic Consumer Electronics Company.)







Slightly Older
A marvel of technology in 1913, this RCA turntable was hand cranked to spin 78 RPM records. Note the size of the needle used to track the grooves. Subsequent needles were minuscule by comparison. (Equipment courtesy of the Lumberville Store, Lumberville, PA.)







High-End Turntables
Lest one think turntables are a 20th century phenomenon, these units were just a few of the turntables showcased at the High Performance Audio show at CES 2010 in Las Vegas. The most extreme unit (top) was USD $96,000 without tonearms and cartridges. See CES.
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References in periodicals archive ?
If you are the kind of person that makes the most decision based on backed up the fact, it may be best to turn to us when it comes to matters relating to turntables. We have professionals who can tell you exactly the best out there.
This intrinsic and primal connection to the rest of the show also makes it hard for Korins to define the turntable's biggest moment in the show.
Due to manufacture imperfections and design limitations of the turntable system, the orientation of the GyroWheel axes will be deviated from the intended one.
Record Store Day heralds a rise in vinyl sales and is one of the reasons Spillers, the world's oldest record store - founded in 1894 - has produced a limited run of 100 turntables, priced at PS300 each.
turntable diameter are also available as optional upgrades.
Milacron turntables including Varian are servo driven, making them very precise.
* The new rotating and pivoting turntable eliminates scan targets and allows users to reorient a part by simply clicking on the computer screen--no need to physically move the part, turntable, or scanner.
The question for me is 'how can the turntable work with other instruments?' It's the centenary of John Cage's birth this year.
The EZ Weighs unique design separates the weigh system from the stretch wrapper's frame ensuring only objects placed on the wrapper's turntable are weighed.
Suitable for the automated processing of a wide variety of components--individually or attached to tailored fixtures--the new machine has a 1550mm x 1300mm x 1180mm high sealed processing enclosure and incorporates a special four-gun blast gun array and powered turntable arrangement.
MOVETECH UK (the new name for British Turntable) has supplied two purpose-built turntables to the Trinity House buoy maintenance facility at Swansea to facilitate the cleaning and painting of buoys, providing a tailor-made solution to the grit-blasting and painting process that is both safer and more efficient.
A "bolt-on" electric injection unit and turntable have been introduced by KraussMaffei to convert its--and other manufacturers'--injection moulding machines to multi-component moulding.