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Turntable

 

What is Turntable-How You Can Use

What is Turntable-How You Can Use

In case youve been living under a rock for close to a century, you know what a turntable is, or at least know what some of the other names it is called: phonograph, gramophone, record player, and so on. In short: a turntable is a musical device DJs use to play records, aka vinyl. A turntable is actually quite a simple musical device.

The turntable is one of the longest lasting technologies still in popular manufacture today. No matter how many technologies attempt to replace it — the 8-track, the cassette tape, the CD or the MP3 — theres still a healthy group of folks who say no sound is richer and more full than when a vinyl record is played.

To the uninformed, it looks like magic: As the needle scrapes across the groove of a record, beautiful and accurate sounds come through the turntables speakers. DJs are the ultimate wizards when it comes to this powerful magic, managing to not only keep record samples in endless loops, but also mixing, shifting and manipulating the sounds to suit the mood at hand. Its a wonder to behold, and even more fun to dance to.

What actually happens between a vinyl record and a turntable is really very simple — its a data transfer like any other music playing method. Lets take a look inside the technologies of the turntable to piece together how it all happens, and why people cant stop loving the sound.

There are only actually a few moving parts on a turntable which includes the platter, tone arm, and the motor which drives the platter.

Of course there are other parts to the turntable; however, well be focusing on the main parts in this article, and will go into more detail of things like the tone arm in another article.

The Base

 The base of a turntable can be made of nearly any material and come in a variety of shapes, but it has the important task of making the whole system run.

This is because it holds the motor — either a direct drive or through a belt or wheel system — that moves the platter, or the spinning surface that the record is placed on.Bases are also the place where manufacturers exhibit the most creative touches, whether it be natural wood or a black lacquered rig.

The platter is the next important piece, and its responsible for maintaining a consistent and uninterrupted speed that will play the record. Heavy materials are highly valued in the construction of the platter, and the most expensive turntables on the market will often be made of ultra-weighted aluminum.

A heavy platter is the key to a rumble-free and steady sound — anything too light, and the record has the potential to rattle around from the speed of the motor. On top of the platter, there is a rubber mat that helps the record stay in place without risking scratches. Most platters turn at a rate of 45 RPM, which is the optimal speed to play most vinyl records (and its also the reason records are alternatively called "forty-fives").

The Arm 

Where the base of a turntable is fairly straightforward, the arm system is where all of the complex technology is stored. Attached via its own spot on the base, far enough away from the platter to reduce any shakiness, the toning arm puts plenty of power in a really small package.

The first challenge of the arm is to ensure that its flexible enough to easily move to the record, but heavy enough to be unaffected by the motors within the base. It must be frictionless to prevent damage to the system, and remain at a consistent angle to prevent long-term record damage.

The overall construction of the arm has changed very little over the years, but the weight of the arm and how it is angled varies from system to system. What is most consistent is that the tone arm always tracks along the record at a consistent tangent to prevent long term damage.

 At the end of the toning arm is the cartridge — the piece of the system that makes the magic happen. Although its small, the rectangular piece utilizes electromagnetic induction to transmit the grooves of a vinyl record into sound waves.

The cartridge holds a removable stylus, usually made of diamond shaved down to an ellipsis only a few micrometers thick, set in soft plastic (called a cantilever) that physically touches the grooves of the record. The cartridge can either be a moving magnet (MM) or moving coil (MC) system, with the coil system found in the higher end turntables.

In both cases, the movement of the stylus creates tiny fluctuations in a magnetic field that transmit up through the arm and become the sound you hear out of the speakers.

 The result is a tailored system that varies in style and approach depending on a multitude of factors, but the end result is that sweet sound out of the speakers.

The Result

A turntable is a wildly interesting product of sound engineering and finite science, which is probably why it remains relevant to this day. Audiophiles worship it for its "fidelity," but theres also something to be said about just watching the record spin around and around.

So, the next time you drop a needle or witness a DJ perform a great track remix live, know that theres plenty of awesome data flowing through that centuries-old device.

 

 
Tarih       : 11 Ağustos 2015
 
 

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