Wharfedale Evolution 2-20 (EVO2-20) Floorstanding/Tower Speakers Rosewood Finish

NOTICEABLE DEFECTS (Please Read Carefully)

Two plastic press-fit fasteners on the back of one speaker mesh cover are broken. The cover still fits evenly and securely to speaker cabinet.

SERIAL NUMBER
E220000119R

SPECIFICATIONS

Transducer Complement -  2 Way Cone Bass driver - 6.5” 170mm
Soft Dome Tweeter -  1” 25mm Nominal impedance -  6 Ohms
Impedance variation (Ohms) -  4.0–16.0
Frequency response +/- 3dB -  50Hz–28kHz
Low frequency limit -10dB -  35Hz Upper frequency limit -10dB -  32kHz
SPL 1W @ 1m -  88dB
Typical Distortion - to 300Hz -  <7%
(100dB@1m) - over 300Hz -  <1%
Continuous Programme Power -  100 Watts
Recommended Amplifier Power -  40–200W
Max Peak SPL -  109dB
Nominal coverage horizontal -  90 to 12kHz
Nominal coverage vertical -  70 to 12kHz
Enclosure type bass/mid -  ported
Volumes bass/mid -  23.8 litres
System Fb -  40Hz
Crossover frequencies -  2.2kHz
Construction material -  15 & 25mm MDF
Finish -  Rosewood

Component part numbers
Bass driver -  17167
Tweeter -  0371
Product dimensions H x W x D -  35" x 8.9" x 14"
Net weight -  34.2 lb x 2
Carton dimensions H x W x D -  40" x 23.6" x 16.1"
Gross weight -  76 lb

Link to owner's manual https://data2.manualslib.com/pdf/6/502/50189-wharfedale_pro/evo50.pdf?a4a809999112123d92774a283f150933

The Quintessential British Floorstanding 2-Way Speaker

The Evo2-20 has all the hallmarks of a legendary speaker in the
making; an affordable, compact tower with the superb imaging of a
bookshelf and the thrilling power of a tower speaker, the Evo2-20 's large volume and superb bracing allows the custom 6.5" woven Kevlar woofer to breathe, giving the Evo2-20
greater air and presence, opening up the soundstage and creating a more
relaxed listening experience. From grilles to binding posts, Evo2-20 is built entirely in-house giving it excellent coherency from top to bottom.

Wharfedale has always been at the leading edge of development
in acoustic science. New technologies and materials create new
opportunities to push the boundaries of music reproduction. The
loudspeaker is often regarded as the weakest link in any system, Wharfedale
develops loudspeaker systems capable of extracting the best from any
hi-fi - loudspeakers that will continue to improve as you upgrade the
rest of your system. EVO2 is the successor to the highly
acclaimed evolution series of loudspeakers. Although the lineage is
obvious, every internal component has been updated and improved to
create a loudspeaker series which can justifiably be called
state-of-the-art' in every respect.

Improvements to both high-frequency response and bass dynamic attack
have been allied with an overall improvement in cohesion between all the
drive units. The resulting performance is nothing short of
breathtaking. Engineered to the very highest standards and finished
using real wood veneers, Evo2 will deliver a consistently high standard of reproduction for many years. Something generations of Wharfedale owners have grown to appreciate.

Features:

• Refined cones and surround materials for highly matched performance
• Improved resin structure suppresses transverse waves on the cone reducing distortion and improving soundstage and imaging
• Larger voice coils and magnet structures for higher dynamics and power handling
• Cast aluminum heat sink/chamber for tweeter improves power handling and midrange blending
• Silk Soft Dome tweeter for increased speed and bandwidth
• Larger gauge OFC internal speaker cable for better electron transfer
• Air core inductors on all mids and tweets for less saturation at high power for lifelike sound
• Real wood veneer for supreme quality fit and finish
• Large curvature and rigid internal bracing for rock solid performance
• 1” thick front baffle for excellent driver isolation and added rigidity
• ¾” MDF based on Eucalyptus, very hard and dense natural wood
• Plinths on all floor standing units for better cabinet to floor isolation

Materials and Performance

One of the most inert and resonance free enclosures of its type, every internal component in the Evo2 has
been improved and updated to enhance performance. The type of material
used in each component of the speaker system plays a big part in the
overall performance. Wharfedale's team of research engineers is constantly reviewing each and every material used to see if improvements can be made.

Wharfedale emphasizes four properties for their cone materials:

Ultra Light: Drivers must start and stop on a dime, creating huge dynamics with excellent resolution

Ultra Stiff: Eliminates distortions at all volume levels created by woofer “flex”

Ultra Damped: Eliminates cone resonance so the driver does not add its own “flavor” thus coloring the sound

Ultra Consistent: Ensures all drivers have the exact same performance characteristics, regardless of model

Kevlar is used for the mid-range and bass drivers. Woven into a three
dimensional lattice, raw KEVLAR® is resin-impregnated to form a
structure which is both stiff and light. This minimizes distortions of
the cone even under extreme dynamics. A new resin has been developed
which helps to suppress the transverse waves which ripple out from the
centre of the cone on impulse and can lead to distortion. A new textile
for the dome tweeter, which is faster and lighter than previous
materials, means the capacity of wider bandwidth. Combined with an
improved voice coil and stronger, shielded magnets, the result is a more
open soundstage and improved imaging.

Wharfedale uses fully shielded magnet assemblies making them
completely safe to use next to conventional televisions and monitors.
High-gauss neodymium is used in the tweeter because of its exceptional
field strength and compact size.

Evo2 uses a curved cabinet design that has been inherited from
its predecessor - although new production techniques mean that it is
now stronger than ever. Heavily braced internal, using transverse,
oblique and longitudinal beams, this cabinet has extremely low
resonance, so remaining sonically neutral at all times.

The internal curves and an oblique brace mean there are no parallel
sides within the cabinet, In conventional speakers, the parallel sides
cause standing waves which add a 'drone' to the sound. The curves of the
Evo2 cabinets prevent these standing waves from forming and lead to a tight and tuneful bass - removing the 'single note' effect.

Wharfedale makes everything in-house, from the cabinet to the
PCB's of the crossover, so they are able to ensure the quality of every
single constituent part. For example, each bass and mid-range driver in
the series uses and open-back cast alloy chassis optimized to its
particular frequency requirements.

The attention to detail is complete: even to the extent of the gold
plated, offset and shielded bi-wire terminals. Internal cables are all
high-grade multi-strand oxygen-free copper. The tweeter plate, terminal
plate and driver trim-rings are all cast alloy. Even the spikes are
mounted using a clamping method which effectively decouples them from
the cabinet - minimizing the energy transfer.

A new tweeter with an aluminum voice coil has been developed for the Evo2.
With a wider bandwidth than the previous model, the new unit is capable
of extracting the best from the latest high-resolution audio formats.
Because of its improved thermal properties, the new tweeter is also
capable of higher output. A cooling heat-sink has been added to ensure
the tweeter can be driven hard, yet always remain within the optimum
operating temperature. The maximum excursion of the tweeter had been
increased, largely because of the improved control capabilities of the
magnet assembly and voice coil. Acoustically this provides a distinct
performance advantage - specifically producing better leading-edge
detail and crisper, faster response.

The entire tweeter is then decoupled from the cabinet, housed in a
cast alloy mounting plate which itself is curved to provide an optimum
dispersion characteristic.

Crossover

Possibly the most radical overhaul of the original Evolution has been in the area of the crossover. In 2004, Wharfedale
began to produce capacitors in-house - designs which meet the highest
standards of audiophile performance yet which, when produced in-house,
add nothing to the overall cost of the products. Wharfedale's
philosophy on crossovers however, is consistent. Because every drive
unit and cabinet is manufactured under one roof, every product is
designed with perfect synergy. There is no need for complex electrical
correction which could upset mid-range performance. Instead Wharfedale uses as simple a configuration as possible.

This philosophy ensures the signal path is clean and free from
artifacts and is largely responsible for the cleanliness of the
mid-range and wide, open soundstage Wharfedale products are
famous for. To maximize the performance of the new capacitors in
operation, they are partnered with high quality air-cored chokes and
mounted on the PCB in a way to minimize magnetic interference between
components. Furthermore, the bass and treble portions of the crossover
are separated - again to further reduce the effects of magnetic
interaction. The boards are tee-nut mounted onto wooden runners in the
cabinet which ensures square placement and minimal vibration.