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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 conical diaphragm. When electrical signals pass through a voice coil, the diaphragm moves.

However, the force exerted is limited to a small area and it's difficult for different points on the diaphragm to move at same at the same time. This leads to breakup modes that can cause distortion.

Detailed Sound

Many audiophiles are looking to get a detailed sound from their headphones. This is possible with a planar diaphragm. This type of headphone operates similarly to dynamic cone drivers, but with a much more modern technology.

A planar diaphragm is an elongated structure that is embedded in the headphone's frame. It's made of a light, thin film-like material. It's designed to be as homogeneous as it can be and its flat surface permits an uniform distribution of pressure across the entire surface which, in turn, improves the clarity of sound.

The flat shape of a planar diaphragm magnetic diaphragm creates a more controlled soundstage. A more focused soundstage is made possible by a narrower wavefront. This helps determine the exact location where a vocal or instrument is situated on the track. This is a significant advantage over the more spherical wavefront that is typical of dynamic drivers.

A closed back planar magnetic headphones diaphragm is distinct from traditional dynamic drivers that use a voice-coil attached to the cone's central point composed of plastic or paper. Instead, it utilizes a series of magnets on each side of its flat surface. The diaphragm is vibrating and emits sound when the current that flows through the voice coil interacts these magnets. Because the entire diaphragm can be driven at once there is no breakup modes, mechanical filtering, transmission delay or local resonances that could adversely affect sound quality.

A diaphragm that is flat and uniform can also be accelerated more quickly than the larger and more heavy ones used in dynamic drivers. The laws of physics state that force is proportional to acceleration and mass, so the faster a diaphragm can move, the more power it can exert. This gives planar magnetic drivers more precise bass response as well as greater detail retrieval.

The advantages of a planar magnet driver are not without cost. They're more expensive than dynamic drivers since they feature a huge diaphragm and a complex motor. They also require a stronger amplifier to work effectively. Many manufacturers of planar magnetic headphones can take advantage of their technology and create high-performance headphones for competitive prices. Audeze LCD-4, HiFiMAN Susvara are just a few examples.

High Sensitivity

The planar driver is different from moving coil drivers, used in most headphones and IEMs by using a flat diaphragm in place of a cone or dome shaped membrane. When an electrical signal travels through it, it interacts with the magnets and diaphragm to create sound waves. The diaphragm that is flat is able to react quickly to sound and it can produce a wide spectrum of frequencies from lows to highs.

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

Additionally the planar magnetic drivers provide a very uniform driving force throughout the diaphragm and eliminates breakup points, and provides an uncluttered sound that is free of distortion. This is particularly crucial for high-frequency sounds where the sound can be distorted and distracting. In the FT5 the way this is achieved is by using an advanced material called polyimide, which is both ultra-light and extremely strong, and a sophisticated conductor pattern that eliminates inductance associated intermodulation distortion.

The planar magnetic drivers of OPPO have a higher degree of phase coherence, which means that when a wavefront enters the ear canal, it's a perfectly flat and unaltered shape. Dynamic drivers, on the other hand they have a spherical-shaped wavefront, which disrupts this coherence and causes less-than-perfect signal peak reconstructions particularly in high frequencies. OPPO headphones sound extremely real and natural.

Wide Frequency Response

Planar magnetic diaphragms have the ability to reproduce sounds at higher frequencies than traditional drivers. This is due to their thin and lightweight diaphragm is very precise in its movement. This enables them to deliver high-quality transient response, which makes them a perfect option for audiophiles who need rapid responses from their headphones and speakers to reproduce the finest detail in music.

The flat design gives them a more even soundstage than headphones that utilize a dynamic driver coiled. In addition they are less prone to leakage that is the sound that escapes from headphone cups and into the surrounding area. In some instances this is a concern because it can distract listeners and affect their concentration when listening to music. In some cases, this can be a problem since it can cause listeners to lose focus and distract their concentration when listening to music.

Rather than using a coil behind a cone-shaped diaphragm, planar magnetic headphones feature conductors that are printed on the extremely thin diaphragm. This conductor is then suspended between two magnets and when an electrical signal is applied to this array, planar driver it turns into electromagnetic which causes the magnetic forces on either side of the diaphragm to interact with each one. This is the reason why the diaphragm begins to vibrate, resulting in the sound wave.

The low distortion is due to the uniform movement of the light, thin diaphragm as well as the fact that force is evenly distributed across its surface. This is a significant improvement over traditional dynamic drivers, which are known for producing distortion at high levels of listening.

Certain high-end headphones employ the old-school moving coil design. However, most HiFi audiophiles are embracing this long-forgotten technology to create new generation of planar magnetic headphones that sound amazing. Some of these models require a top-of-the-line amplifier to drive them. For those who can afford it, they provide an experience that is unlike any other headphone. They offer a rich, detailed sound that is free of the distortion that is common in other types of headphone.

Minimal Inertia

Because of their design, closed-back planar magnetic headphones magnetic diaphragms are extremely light and move much faster than traditional drivers. They reproduce audio signals with greater accuracy and can be tuned to a larger range. They also provide an authentic sound with less distortion than traditional dynamic loudspeakers.

The two rows of magnets inside a planar driver produce equal and uniform magnetic forces across the entire surface of the diaphragm. This will eliminate any unnecessary and unwanted distortion. Since the force exerted on the diaphragm's lightweight is evenly distributed, it can be controlled more precisely. This lets the diaphragm move in a precise pistonic motion.

Planar magnetic drivers are capable of achieving extremely high levels of performance with very little weight, which makes them ideal for use with portable headphones. They can also be designed to offer a wide range of frequencies, ranging from deep bass to high-frequency sounds. The large frequency response and precise sound reproduction make them a popular choice for audio professionals.

Planar magnetic drivers are different from dynamic drivers that utilize coils to push the diaphragm. They do not have any mechanical components that could cause distortion. This is because the flat array is placed directly on top of the diaphragm, rather than in the form of a coil that is behind.

A planar magnetic driver, in contrast it can drive a small and light diaphragm with an extremely powerful magnetic force with no loss of energy. The diaphragm is an extremely thin and lightweight membrane is driven by a magnetic field that exerts an unchanging pressure. This prevents it from bending or causing distortion.

The moment of inertia is the resistance to rotation of an object. It can be calculated from the formula I = mr2. The shape of the object determines its moment of inertia minimum. Longer and smaller objects have lower moments of inertia.