How a Planar Magnetic Diaphragm Headphone Driver Works
In the past, dynamic drivers featured a voice coil attached at the center of a conical dialephragm. When an electrical signal passes through a voice coil, the diaphragm moves.
However, the force that is exerted is limited to a tiny area and it's difficult for various points on the diaphragms to move at the same time. This can cause distortions due to breakup patterns.
Audio with a Detailed Sound
Many audiophiles are looking to get an authentic sound from their headphones. A good method to achieve this is with a planar magnetic diaphragm. This type of headphone operates similarly to dynamic cone drivers, but with much more advanced technology.
A planar diaphragm features a flat structure that's integrated into the headphone's frame. It's constructed out of a lightweight, thin film-like material. It's designed to be as homogeneous as it can be, and its flat surface allows for an evenly distributed pressure across the whole surface which improves sound clarity.
The flat design of a planar magnetic diaphragm also lets you control the soundstage. A more focused soundstage is achieved by a more focused wavefront. This helps pinpoint where an instrument or vocal is situated on the track. This is a major benefit over the more spherical wavefront typical of dynamic drivers.
Contrary to traditional dynamic drivers which use a voice coil that's located to the center of a paper or plastic cone, a planar diaphragm makes use of magnets that are placed on each side of its flat surface. The diaphragm vibrates and creates sound when the electrical current that flows through the voice coil interacts with these magnets. Because the entire diaphragm is driven simultaneously, there are no breakup modes, mechanical filtering transmission delay, or local resonances that could negatively affect the quality of sound.
A flat and uniform diaphragm can also accelerate faster than the thicker and more heavy ones used in dynamic drivers. The laws of physics state that force is proportional to mass and acceleration, so the faster a diaphragm will move the more force it exerts. This gives planar magnetic drivers a more accurate bass response and superior detail retrieval.
Of course, the advantages of the planar magnetic driver do not come at a cost. They cost more than dynamic drivers since they have a large diaphragm as well as a complex motor. They also require a larger amplifier to function properly. Many planar magnetic headphone makers are able to take advantage of their technology to create high-performance headphones for competitive prices. Audeze LCD-4, HiFiMAN Susvara are a few examples.
High Sensitivity
Planar drivers differ from the moving coil drivers that are used in the majority of headphones or IEMs in that they employ a flat membrane instead of a conventional cone or dome membrane. When an electrical signal travels through, it interacts both with the magnets and the diaphragm, generating sound waves. The flatness of the diaphragm enables it to react quickly to sound and can produce a wide range of frequencies, from lows to highs.
Planar magnetic headphones are more sensitive than other drivers for headphone which use diaphragms up to several time larger than the typical planar design. This creates an incredible amount of clarity and dynamic range that allows you to hear every detail your music can offer.
Planar magnetic drivers also create an extremely consistent driving force across the diaphragm. This prevents breakup and creates an undistorted and smooth sound. This is particularly important for high-frequency sound, where breakup can be audible and distracting. This is accomplished in the FT5 by using polyimide, a material that is both ultralight and durable, and an advanced conductor design that eliminates intermodulation distortion caused by inductance.
The OPPO's planar magnetic driver also have much better phase coherence, meaning that when a wavefront enters our ear canal, it is a perfectly flat and unaltered shape. Dynamic drivers have a spherical-shaped wavefront, which alters the coherence of the signal and result in less-than-perfect reconstructions high-frequency signals, particularly when they are playing at high frequency. OPPO headphones sound incredibly natural and realistic.
Wide Frequency Response
Planar magnetic diaphragms have the ability to reproduce sounds at much higher frequencies than traditional dynamic drivers. This is because their diaphragm is thin and light in weight. moves extremely precisely. This enables them to deliver an excellent transient response. This makes them a perfect choice for audiophiles that require rapid responses from their speakers and headphones to reproduce the finest detail in music.
This flat structure gives them a more uniform soundstage than traditional headphones that utilize a dynamic driver coiled. In addition they are less susceptible to leakage, which is the sound that escapes from the headphone cups and into the environment around you. In certain situations, this could be a problem since it can distract the listener and make them lose focus when listening to music. In other instances it can be beneficial as it lets listeners enjoy music in public spaces without having to worry about disturbing others close by.
Instead of using an underlying diaphragm that is shaped like a cone Planar magnetic headsets comprise an array printed on a thin layer of the diaphragm. This conductor is then suspended between two magnets, and when an electrical signal is applied to the array, it turns into electromagnetic and causes the magnetic forces that are on either side of the diaphragm to interact each one. This is what causes the diaphragm to vibrate, creating a sound wave.
The low distortion is due to the uniform movement of the light, thin diaphragm, and the fact that the force is evenly dispersed across its surface. This is an improvement over traditional dynamic drivers which are known to cause distortion at high levels of listening.
Some premium headphones utilize the old-school moving coil design. However, the majority of HiFi audiophiles are embracing this long-forgotten technology to create new generation planar magnetic headphones that sound amazing. Certain models require a high-end amp to drive them. For those who are able to afford it, they can provide an experience that is unmatched by any other headphones. They provide a full and detailed sound that is free of distortion that can be found in other types of headphone.
Minimal Inertia
Due to their design, planar magnetic diaphragms are extremely light and move much more quickly than traditional drivers. This means they can reproduce audio signals more accurately and can be tuned for a wider range of frequencies. They also produce natural sound with less distortion than traditional dynamic loudspeakers.
The dual rows in a planar magnet driver produce an equal and uniform magnetic force across the entire diaphragm surface. This eliminates any unwanted and unnecessary distortion. Since the force exerted on the diaphragm's light weight is evenly distributed it is able to be controlled more precisely. This allows the diaphragm vibrate with a precise pistonic movement.
They also have the capability of achieving very high levels of performance with the smallest weight. This makes them perfect for headphones that can be carried around. They can also be made to produce a wide range in frequencies, from low-frequency sounds to high-frequency ones. best planar magnetic iem and the precise sound reproduction make them a popular choice for audio professionals.
Contrary to dynamic drivers that use coils to push against the diaphragm the planar magnetic driver has no mechanical components that could come into contact with one with each other, causing distortion. This is due to the fact that the conductors' flat surface is placed directly on the diaphragm, instead of in a coil behind it.
In contrast the slim and light diaphragm of a planar magnetic driver can be driven by a strong magnetic field without loss of energy. The diaphragm, a thin, lightweight membrane, is driven by an electric field that creates an unchanging pressure. This prevents it from deforming or creating distortion.
The moment of inertia is an important property that describes an object's resistance to rotation. It can be calculated from the formula I = mr2. An object's shape affects its minimum moment of inertia with objects that are thinner and larger with less inertia moments than larger and thicker ones.