Wharfedale Evo 5.4

High Frequency Unit
A Distinctive Approach to High Frequencies
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 effcient 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.
The EVO 5 AMT goes further with Revolutionary Sound
All EVO 5 drive units benefit from a new acoustic damping frame called ResoFrame™, made from elastomer and visible as a cog-like shape within the driver’s front panel. In the case of the AMT, an additional elastomer damping gasket between the diaphragm and the front plate further reduces mechanical resonances and smooths the response, especially in the important lower treble band.
These Internal Acoustic enhancements minimise unwanted sound colouration, ensuring a purer, more natural sonic signature. This smoother treble response delivers a listening experience that is crisp, controlled, and devoid of harshness.
Lower-Midrange and Bass Refinements for Unparalleled Vocal Reproduction

Reengineered Cabinetry for Superior Resonance Control
The inclusion of a hybrid plinth, which combines metal and wood elements of the cabinet’s details, enhances structural integrity and reduces unwanted vibrations. This innovative base ensures that sound remains clean and uncoloured, free from external resonance artefacts
Next-Generation Slot-Loaded Port Design
The EVO 5 Series debuts a groundbreaking three-directional SLPP (Slot Loaded Profiled Port) channel. Unlike the previous two-directional port in EVO 4, this system optimises airflow distribution, reducing turbulence and distortion. This refined engineering allows the speakers to produce profound yet controlled bass without the muddiness common in conventional bass reflex designs. The result is exceptionally well-defined, tight bass that integrates seamlessly with mid and high frequencies.