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Wharfedale Evo 5.3
High Frequency Unit
The EVO series concept originated from the same thorough research and development processes that characterised Wharfedale’s flagship Elysian project. It was specifically designed to bridge the gap between affordability and high-end performance. A notable feature of this series is the EVO AMT (Air Motion Transformer) high-frequency unit.
A Distinctive Approach to High Frequencies
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 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, faster transient response, wider frequency range and better dispersion.
Lower-Midrange and Bass Refinements for Unparalleled Vocal Reproduction
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.
Reengineered Cabinetry for Superior Resonance Control
Each model in the EVO 5 series now features an optimally increased internal cabinet volume. The expanded cabinet
volume contributes to deeper bass extension and improved overall sound dispersion, creating a more immersive
audio field.
The inclusion of a hybrid plinth, which combines metal and wood elements of the cabinet’s details, enhances
structural integrity and reduces unwanted vibrations.
Next-Generation Slot-Loaded Port Design
Wharfedale’s proprietary Slot Loaded Profiled Port (SLPP) system effciently channels the rear output of the bass drivers into the room. The EVO 5 Series debuts a three-directional SLPP channel, optimising airflow distribution and reducing turbulence and distortion.
The EVO 5 AMT goes further with Revolutionary Sound
A new sound-absorbing material, Silentweave™, has been added to the cavity behind the diaphragm to reduce
sound wave reflection and sound colouration inside the speaker. This material, a combination of cotton and
felt fibre, was specially developed for the EVO 5 series.
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.