turntable

(redirected from Turntables)
Also found in: Dictionary, Thesaurus.

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

turntable

[′tərn‚tā·bəl]
(engineering acoustics)
The rotating platform on which a disk record is placed for recording or playback.

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.
References in periodicals archive ?
Just one look and it's obvious that the all-new turntables are not like those previously offered.
If you agree, a new collaboration between turntable makers Crosley and Fossil watches might be right up your street.
Were backing local manufacturers like Australian Turntables so they can grow, innovate and create new jobs.
Throughout his career, Korins has successfully used turntable stages to great effect in other productions, including in When the Rain Stops Falling by Andrew Bovell, which used a double turntable with the inside off-center; Why Torture is Wrong, and the People Who Love Them by Christopher Durang; and Chinglish by David Henry Hwang, which had two turntables sitting next to each other.
Generally, calibration tests are carried out using a turntable to provide the intended orientation of the GyroWheel.
Mounted on the foot pedal assembly is the reversing switch which controls the forward and reverse rotation of the electric turntable. It is made with silver contacts and is rated at 40 amps, more than twice the needed amperage.
Automated equipment for use with RF heat sealers including in-line indexers, rotary turntables, shuttles, temperature-controlled platens, and feeders.
Two-, four- and six-station turntables are for small- to medium-scale production (RF and contact-heat) and can be used in semi-automated or fully automated production in combination with thermoforming.
Can design and build turnkey operations, bulk-storage systems for chemicals, RIM presses, clamps, turntables and multistation conveyors.
* Two-, four- and six-station turntables for small- to medium-scale production (RF and contact-heat) of blister packs, folded boxes, videocassette cases and holders.
Company can design and build turnkey operations, bulk storage systems for chemicals, RIM presses, clamps, turntables and multistation conveyors to fit customers' plant production requirements.
A complete line of accessory materials-handling equipment, such as rotary indexing turntables, side-to-side shuttle slide tables, and automatic roll-feed indexing mechanisms, is also available.