Skip navigation

Category Archives: Vinyl structure

Disk cleaning brush dedicated

A seemingly simple accessory that is extremely useful for all enthusiasts of the Vinyl disc. The newly launched Anti-Static Brush Anti Audio Brush for only $20 is an affordable option with a highly conductive design thanks to carbon fiber brushes and gold-plated handles, increasing the likelihood Removes microscopic dust particles on disc grooves.

Block vinyl disc

This is what will help you keep the vinyl stable and secure to the platter. They are usually made of many different materials and the price difference is very clear.

If you are new, you can choose to block Clearaudio’s Clever Clamp disc with the selling price of about 30 USD. Because it is made of plastic, the disc is extremely light weight, does not add pressure to the rotating motor of the wheel.

Replace the needle tip

When you feel that something is wrong with the disc while the rest of the device is normal, it’s time to change your stylus. Some wheels now allow users to replace (if possible) without sending it back to the company’s warranty point. In case of necessity, you should consider upgrading to a better cartridge line.

Upgrade your experience with a new generation of carbon wheels

After a long time of use, it’s time to rest your disc and find another product. There are many new things when you decide to change the disc such as sound quality, features and even the connection that the product offers (some disc wheels now include Bluetooth wireless connectivity).

Adding phono pre-amp to the system

With the revival of the disc hobby, many amplifier manufacturers have introduced many preamp products with completely new technology, for better sound quality. One of the typical names for this product line is the Cambridge Audio phono pre-amp Duo.

Change new headphones or speakers

This is the biggest change in what you need to do to listen to music from vinyl better. Because this is a very broad issue, we won’t go into details. You can refer to the article on how to choose a headset or speakers to choose a product you like.

In addition, to maximize the power of headphones or speakers, you should set aside an investment to invest in specialized signal amplifiers (headamp, stereo amplifier, intergrated amplifier, etc.)

After a period of accumulation, you finally own yourself a set of vinyl discs and your favorite discs. For a better experience, here are the things to do & devices that you need to pay attention to in the future.

Balance the disc plate

Keeping your platter balanced is one of the most basic steps of setup. You can estimate with the naked eye, but you should use specialized measuring tools such as a ruler to get more accurate results. If not, it is best to go to a hardware store to buy one to use instead of “trying” with free applications for Android or iOS smartphones.

In addition, if the placement is a little precarious, you can insert additional paper or coins to keep the tray always balanced.

Clean the plate with soap and water

This is a useful and inexpensive way that you can do it at home anytime. All we need is warm water, sponges and some dishwashing liquid. Dry the disc in an open place after rinsing with clean water.

Are you afraid of losing labels? Do not worried. Audiophiliac – a veteran audiophile who proposed this way of sharing that he has not had a disc that has been stripped of labels for many years of application.

Dedicated dish washer machine

What can be done to improve the sound quality from the vinyl records?

Feeling that washing dishes by hand is still not enough, or you don’t have time? The disc washer is the savior for you.

Calibrate the cartridge

To put the cartridge in the optimal position for the disc reading process, we use an accessory called Alignment Protractor and it usually comes with the arm. If not, you can visit here for free download.

Here’s how to use Alignment Protractor.

Invest in furniture

Do you still have dishes on the floor? Don’t be frugal like that. Create a support for your beloved tray with a solid table. If there are too many vinyl discs, a cupboard is a good option for you to order both wheels and discs.

Force gauge

Normally, depending on the manufacturer or the shape of the cartridge, we need to set the tracking force for the needle. Therefore, this is an accessory that needs to be included in the priority list. Price more than 50 USD for a scale do you hesitate? Do not worry, Amazon has an accessory with the same function for only about 10 USD.

Laquer was too hard to use in actual manufacturing, so a metal casting pattern was made. Initially, the laquer was covered with a layer of good conductive graphite, then silver or nickel plated. Once the plate is thick enough, the wax will be removed, leaving behind a stronger metal mold.

Modern techniques require immersing the disc in a solution of stannous chloride and then spraying it on a layer of silver atoms. Plating plates with conventional techniques are still widely used but do not achieve accurate reverberation.

After the initial silver plating has hardened, a fine copper layer is applied, followed by a stronger, coarser layer of metal, such as steel. Fine metal layer, composed of relatively small metal atoms, 85 particles/inch2 with magnification of 100 times the diameter, and features improved strength and toughness than rough steel particles, easily machined more work on the machine.

When the amount of metal was sufficient to support the silver plates, the laquer was smashed into the mold, leaving a metal cathode, or “mortar”.

The mold is still quite hard so it needs to be cast again before starting to compress the vinyl. The metal dish is referred to as the “mother”, cut from a mortar and then plated again to create another sound called a “stamper.”

Each stamper is attached to a 100 ton hydraulic compressor, basically like a mold and can produce thousands of disks before needing replacement.

Each hot vinyl foil is only about half the area but 3 times thicker than a finished disc, called a biscuit, slides between the two compressor jaws, and 300oF steam is used to soften the material before finishing, and compress Hot vinyl on the final shape while recording. Then the disc is cooled with water, becomes hard, and is labeled, all of which are done automatically.

Next, the discs are angled in a neat circle with an automatic trimmer, after which the discs are carefully checked, both visually and acoustically.

Finally, quality LPs are packed and shipped to independent local music retail stores.

Above is the full progress of making vinyl discs, which are used for vinyl record. As can be seen, it is complicated to create vinyl discs that have such steady production levels and amazingly natural sound quality. Hope you know understand how vinyl discs are made.

The first idea about vinyl discs came about 140 years ago thanks to Edison’s phonograph design, and the first records were also made for the first time in 1948 thanks to Columbia with the first 12-inch coal disc in the world.

It was first introduced to the public on June 20, 1948 at Waldorf-Astoria Hotel, New York. And since then many new technologies and mechanisms for listening to music have been born, but removing the vinyl disc from the condom, gently putting it on the turntable and lowering the lever is still possible. Intense shot with most music lovers.

“This is the time for serious music appreciation to create great music performances by the means of record discs. It can be said that the record discs succeeded in accurately and fully reproducing all the details of the symphony or opera performance.

Electrical recording and reproduction have combined to maintain the vitality and color of solo performances. ”- Per Compton Pakenham of The New York Times in 1930.

And the quality only improved in the 1950s with the launch of 33 RPMs, at about 25 minutes each, and the sound strip could be easily edited and optimized for audio in production, then inserted into a master-disc. This master-disc is known as a laquer or acetate disc. In fact, acetate is a misnomer when laquer disks are covered with cellulose nitrate.

And unlike most vinyl discs that are molded, master-discs are cut “manually”, grooves on the surface of the disc are created using a disc cutter needle with mechanical movements controlled by an audio input.

The grooves are checked regularly during the cutting process to ensure the proper depth of the cut path as well as adjust the volume and pitch. After the audio has been copied and the playback quality checked, the laquer will be sent to the production company.

While the digital world is thriving, vinyl LPs continue to be collected along with steady production levels, perhaps due to their warm, natural analog sound quality. So, how can LP achieve such unique sound effects!

In 1877, Thomas Edison was credited with inventing the phonograph, the first device to both record and play back sound.

The device records sound directly when dents on the foil wrap around a grooved roller, which is then played back by rotating the roller, following the needle tip movement along the lines. The groove, vibrates the corresponding mechanical diaphragm and reproduces sound.

By the 1880s, Volta invented a wax-coated cardboard cylinder using the vibration of a phonograph needle, like a seismometer, called the “hill-and-dale” method, like that of Edison.

It was not until the early 20th century that the cylinder was eventually replaced by the flat disc records we use today. But even then, the sound was recorded directly to the disk mechanically.

“Acoustical” records like this rely on a large audio device connected to a gramophone needle. When the sound waves cause vibrations, it will cause the needle to vibrate, and put those vibrations into the hand-cranked disc.

The problem is that the amplitude of the bass notes (bass notes) is many times higher than the notes with the higher tonal range, the sound with the lower pitch takes more physical distance in each segment, then, high and mid tones will be lost during playback. This causes distorted pronunciation as well as heavy bass.

It was not until 1925 that audio inputs were run through a microchip and amp to increase the operating range and volume without depending on the physical properties of the audio equipment, and the era of the “electrical” records have begun.

These recordings are intentionally tuned to the highs and low lows, helping to balance the sound during playback. 78s – discs with a rotating speed of 78 RPM – are considered a technological leap compared to their predecessors.

So some subwoofer frequencies will be pushed up a bit, this range is regulated and managed by the RIAA (Record Industry Association of America) and the EQ range has become a general rule. If you’ve ever tried to plug the Turntable’s output directly into the line-level input of the amplifier, then you usually have a very small sound and have a sound quality that is thin, bright and without bass band, that’s because Our amplifier has no phonostage circuit.

For regular MC needles or MC low-output needles (usually expensive to stick out the tongue) you need to have a Step-up transformer, this is an amplifier using 2 transformers and it amplifies the signal by the ratio. Due to the transformer a passive device works thanks to the magnetic field, the noise is almost impossible. Some MC circuits in phonostage can also adjust the gain to not use step-up for savings, but usually in a normal phonostage or less. Because MC needles need a large amplification ratio of 1:20 when 1:30 and 1:40, the use of active amplifiers will have big noise floor, which is unacceptable, so there are few big companies in this direction. The choice of step-up transformer depends on the impedance and voltage output of the MC needle so not every needle attached to the step-up is good to hear, sometimes combining the wrong impedance is a treble loss, or is a bass loss.

Each phonostage has a RIAA EQ circuit to reverse this process so it will push the bass band and reduce the treble so that the sound quality is balanced. And phonostage is also an amplifier with an output voltage of only a few thousand volts while the standard output of DACs and CDs will be from 2V – 2.5V so the output signal of the turntable should be amplified before transmitting to your amplifier.

5 / Interim

At this point, you can also understand the basic mechanism of playing music through coal, analog, without the influence of digital components. However, to set up a turntable is something that requires knowledge and meticulousness to every detail, and you can understand why such small cartridge needles have a high price and are guaranteed extremely well managed. This article still has many shortcomings about the knowledge that I will spend on the next part, will write and speak more clearly, but I hope this is enough for everyone to imagine how the vinyls work.

  1. Turntable and tonearm

Turntable consists of a platter connected to a shaft in a rotating, cylindrical, and platter rotating on a bearing located at the bottom of the cylinder and in contact with the drive, the two components will rotate thanks to the motor or belt, and the plinth. These are the 3 main components of a vinyl tray. Platter is usually made of aluminum, or monolithic so that it does not resonate and has a heavy weight from 3-5kg to stabilize and prevent vibration. Turntable needs to balance so that the platter and shaft do not lose weight, tilt sideways, in the long run easily damage the belt and make worn bearing. Motor use in the long term also needs to be lubricated so that maintenance is not dry or hiss. Some good turntable will usually have anti-vibration feet that adjust height. And in addition, there are some wheels like Linn Sondek LP12 or AudioCraft AR-110 outside the outtriggers that vibrate, the platter face is connected to the tonearm surface, these two components are supported by springs and separated from the case as well as motor wrongly completely vibrates.

Tonearm is where we attach the needle. Tonearm includes counterweight, anti-skating anti-skid, and various moving mechanisms: unipivot, gimbal, bearing. Good tonearm materials are usually brass or titanium nitride because they are very light and good in resonance, when playing more bass and deep with no vibration.

  1. Phonostage

Many of you still think that the sound of vinyl discs is the most original and closest to the recording. Yeah, this concept is due to you guys selling discs or selling hi-end goods. In addition to the mix and cut discs directly, some vinyl discs are remixed from the original master tape and then cut and stamped into different versions. During the process of creating the disc, the signal has been processed, has been calibrated EQ, why is it because of the cutting lathe it is difficult to engrave the information that is too large and the sectional area is not may be too deep, thus affecting the life of the needle tip (often very expensive).

  1. Cartridge

As above, I have mentioned two types of cartridges, namely MM and MC. The cartridge’s task is to sweep up the small grooves on top, releasing most accurately the vibrations on the grooves. The cartridge consists of two parts, the stylus and the body. The tip of the cartridge is often used with extremely high hardness components and is generally an industrial diamond compared to diamond in jewelry products, which do not have the same purity and clarity as on jewelry but equal hardness. Diamond heads are often sharpened into a very small point, with several different cartridge standards such as Nude, spherical, elliptical, Shibata … each of which will have sharpness as well as contact points into different disc slots. The more sharp and exposed the more expensive, typically fine line and elliptical. When scanning on the disc groove, the movement and movement intensity of the stylus is what is transmitted into the frequency and intensity of the volume, generally the sounds that you hear through vibration of stylus needle first. The stylus drives into the small, slender cantilever, which is a stylus that places the stylus tip and will also vibrate under the needle tip and vibrate the transmission to the inside of the cartridge body.

There are 2 types of cartridges: Moving Magnet (MM) and Moving Coil (MC), although both cartridges use the principle of physical regeneration based on motion in the electromagnetic field. Like the Moving Magnet, the MM needle magnet will be in the cantilever tree moving to regenerate the current while the two coil parts on the cartridge will be fixed. In the case of Moving Coil, the tail of the cantilever will have a coil attached to the tail and the magnet will be fixed.

However, according to folklore, the MM head will have a common needle tip with the ability to easily change the stylus head and the durability is higher than that of the MC, as well as the current intensity is also higher than the MCs. The first MC is more expensive, uses smaller sized diamonds, makes it more difficult to manipulate, does not replace the stylus, is more fragile and the current intensity is also smaller than that of MM so it needs a Step-up transformer or a phono preamplifier circuit separately for MC to increase the amperage to match phonostage. The MC, due to its small needle tip and slim cantilever, is less resonant, responds quickly to the notched lines on the disc groove and less dust trails, so it is more clean, static and clear than when listening to the sound of MM.

The principle of operation of MM and MC is that the reciprocal magnetic field is generated from magnets and small coil rings, which will produce electrical signals with small variations. The current will be amplified and transmitted to the amplifier to output the speaker. In many cases you need to use a phonostage as an intermediate bridge between turntable and amplifier or pre-amp.