AMT Tweeter for Precision and Detail: In developing the new EVO 5 series, Wharfedale has further evolved the cutting-edge Air Motion Transformer (AMT). The AMT is a type of high-frequency driver used in speakers, known for its exceptional accuracy, speed, and low distortion compared to traditional dome treble units.

Instead of using a conventional dome or cone to push air forward, an AMT uses a pleated diaphragm made of an ultra-thin, lightweight material (often a polymer film). Strong magnets are positioned on either side of the diaphragm, creating a powerful magnetic field. When an audio signal is passed through the conductive traces, the diaphragm is energised, causing the pleats to contract and expand. As the pleats move, they "squeeze" and "expand" the air between them, pushing it out in a highly controlled and eficient manner. This method allows the AMT to move four times more air than a traditional dome tweeter of the same surface area, leading to lower distortion (since the diaphragm moves less than a typical dome or ribbon), faster transient response (due to the lightweight material and minimal movement), wider frequency range and better dispersion.

Enhanced Midrange: A new technique, labelled Resoseal™, sees a thin mass ring of elastomer applied to the rear of the cone where it meets the surround. This further optimises midrange frequency response, allowing vocals to sound richer, more naturaLower-Midrange and Bass Refinements for Unparalleled Vocal Reproductionl, and more emotionally engaging. This subtle yet critical enhancement ensures a refined and immersive listening experience.