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How a Planar Magnetic Diaphragm Headphone Driver Works

Typically, dynamic drivers feature a voice coil that is connected to the middle of the diaphragm conical. When electrical signals pass through the voice coil, it causes the diaphragm to move.

The force is only applied to a tiny portion of the diaphragm, and it's hard to move different points at the same moment. This leads to breakup modes that can cause distortion.

Audio with a Detailed Sound

Many audiophiles want an accurate sound through their headphones. This can be accomplished with a planar diaphragm. This type of headphone operates similarly to dynamic cone drivers but with a much more advanced technology.

A planar diaphragm is a flat piece of material that is embedded within the frame of a headphone and made of a thin lightweight material. It's designed to be as uniform as is possible, and its flat surface allows an even distribution of pressure across the whole surface which, in turn, improves sound clarity.

A flat planar magnetic diaphragm's design creates a more spacious soundstage. A more precise soundstage is achieved by a more focused wavefront. This helps identify the location of an instrument or vocal is on the track. This is an important benefit over the more spherical wavefront typically of dynamic drivers.

In contrast to traditional dynamic drivers, which utilize a voice coil attached to the center of a plastic or paper cone, a planar diaphragm makes use of magnets placed on each side of its flat face. The electrical current passing through the voice coil interacts with the magnets to drive the diaphragm, which causes it to vibrate and create sound. Because the entire diaphragm can be driven at the same time there is no breakup modes, mechanical filtering transmission delay or local resonances which could negatively affect the quality of sound.

A diaphragm that is flat and uniform can also accelerate more quickly than a thicker, heavier one used in dynamic drivers. According to the laws of physics force is proportional to mass and acceleration. This means that the greater the speed at which a driver's diaphragm is moved the more power they can exert. This results in planar magnetic drivers an more accurate bass response and greater detail retrieval.

The advantages of a planar closed back headphones magnet driver are not without cost. Since they come with a complex motor system and large diaphragm, they usually cost more than dynamic drivers, are bulkier and require a more powerful amplifier to work effectively. Nevertheless, many manufacturers of planar magnetic headphones are able to make the most of their technology to make premium headphones that are priced competitively. Audeze LCD-4, HiFiMAN Susvara are a few examples.

High Sensitivity

Planar drivers differ from moving coil drivers that are used in the majority of headphones or IEMs in that they use a flat membrane instead of a traditional cone or dome membrane. When an electrical signal travels through, it interacts with the magnets on both sides of the diaphragm. This produces sound waves by bouncing the diaphragm. The flat diaphragm is able to react quickly to sound and can produce a wide range in frequencies from lows to highs.

Planar magnetic headphones are more sensitive than other drivers for headphones planar headphone that use diaphragms up to several time larger than the typical planar design. This results in an exceptional quantity of clarity and dynamic range that allows you to hear every tiniest detail that music has to provide.

In addition, planar magnetic drivers produce an extremely uniform driving force throughout the diaphragm that eliminates breakup points and delivers a smooth sound that's free of distortion. This is especially important for high-frequency sound, where breakup can be audible and distracting. In the FT5 this is accomplished by using an advanced material called polyimide, which is both ultra-light and extremely robust, as well as a specialized conductor pattern that blocks inductance intermodulation distortion.

OPPO's planar magnetic drivers also have much better coherence in phase, which means that when a wavefront hits our ear canal, it's an unaltered and flat shape. Dynamic drivers feature a spherical wavefront, which disrupts the coherence of the signal, which causes less-than-perfect reconstructions of high-frequency signals, particularly when they are playing at high frequency. OPPO headphones sound incredibly natural and realistic.

Wide Frequency Response

A planar magnetic diaphragm is able to reproduce sounds at wider frequencies than conventional dynamic drivers, thanks to the fact that their diaphragm is thin and light in weight. moves in a very controlled way. This allows them to offer high-quality transient response, which makes them an exceptional option for audiophiles who need rapid responses from their headphones and speakers to reproduce the finest nuances in music.

This flat design also gives them a more even soundstage than regular headphones that have dynamic drivers that are coiled. Additionally they are less prone to leakage which is the sound that escapes from headphones and out into the surrounding environment. In some cases this can be a problem as it can distract the listener, and make them lose focus while listening to music. In other cases it can be beneficial since it allows listeners to enjoy music in public environments without having to worry about disturbing others nearby.

Instead of using a coil behind a cone-shaped diaphragm, planar magnetic headphones feature an array of conductors printed on the extremely thin diaphragm itself. This conductor is then suspended in between two magnets, and when an electrical signal is applied to this array, it transforms into electromagnetic and causes the magnetic forces on either side of the diaphragm to interact each other. This is what causes the diaphragm to vibrate, creating a soundwave.

The uniform movement of the lightweight diaphragm, and the fact that the force is evenly distributed across its surface which means distortion is incredibly low. This is an enormous improvement over traditional dynamic drivers which are known for producing distortion at high levels of listening.

Certain high-end Headphones Planar employ the old-fashioned moving coil design. However, most HiFi audiophiles are now adopting this long-forgotten technology to create a new generation of planar magnetic headphones that sound amazing. Some of these models are extremely expensive and require a premium amplifier to power them however for those who can afford them they offer an amazing experience that is unmatched by any other headphone. They provide a full clear, clear sound that's free of distortion that can be found in other headphone types.

Minimal Inertia

Due to their design they are extremely light and move much more quickly than traditional drivers. This means that they reproduce audio signals more precisely and can be tuned for more frequencies. They also produce an authentic sound with less distortion than traditional dynamic loudspeakers.

The two rows of magnets in a planar magnetic driver create equal and uniform magnetic forces across the entire surface of the diaphragm. This eliminates any unwanted and unnecessary distortion. Because the force applied to the diaphragm's light weight is evenly distributed, it can be controlled more precisely. This allows the diaphragm to vibrate in a perfectly pistonic motion, leading to an accurate and smooth music reproduction.

Planar magnetic drivers are capable of achieving very high levels of performance while carrying very little weight, which makes them ideal for portable headphones. They can also be made to provide a variety in frequencies, from low-frequency sounds to high-frequency ones. The wide frequency response and accurate sound reproduction make them a favourite among audio professionals.

Planar magnetic drivers are different from dynamic drivers which use coils to push the diaphragm. They don't have any mechanical parts that could cause distortion. This is due to the fact that the flat array sits on top of the diaphragm, rather than in the form of a coil that is behind.

A planar magnetic driver in contrast can drive a thin and lightweight diaphragm using a powerful magnetic force, without loss of energy. The diaphragm is a thin, lightweight membrane, is driven by a magnetic field that exerts an unchanging pressure. This prevents it from deforming or creating distortion.

The moment of inertia is a crucial property that describes an object's resistance to rotation. The formula I = mr2 could be used to calculate it. The shape of the object determines its minimum moment of inertia. Longer and thinner objects have lower moments of inertia.