Planar Transducers are fundamentally different from conventional cone speakers or dynamic drivers. Planar Magnetic speakers use a flat, lightweight diaphragm suspended in a magnetic field as the driver rather than a cone attached to a voice coil. The diaphragm has a circuit pattern etched into it that, when energized, creates the forces that drive the diaphragm to move in the magnetic field to produce sound. Planar magnetic speakers, when implemented well, have inherent advantages over cone speakers.
First, the driver moves in a more piston-like manner due to the even application of force by the magnetic field surrounding the diaphragm, which reduces distortion effects. Second, the diaphragm is mounted on all sides, reducing fatigue points; Planar Magnetic speakers employ a tough polymer as the base material, which makes it much more durable than cone diaphragms. Third, because the diaphragm is very thin, it is also more responsive, leading to more faithful sound reproduction and the crispness of sound that is the hall mark of good quality speakers. And finally, because it is flat, planar magnetic drivers can dissipate heat more quickly using the large surface area of the diaphragm itself, which dramatically reduces the chance of burn-out.
Audeze employs a number of proprietary techniques to improve upon the basic planar magnetic design. Audeze design uses a very thin, proprietary film for the diaphragm. Once etched, the diaphragm is mounted in tension between two layers of opposing magnets. This mounting process requires great precision, and Audeze has designed proprietary methods and tools to effect a very consistent and even mount. This diaphragm manufacturing process has been tuned to ensure a flat frequency response over a wide bandwidth while ensuring a robust diaphragm and maximum efficiency of the driver.