Bass and midrange cones are fashioned from woven Kevlar and incorporate semi-elliptical ‘break-up’ areas – visible as raised ‘V’ shapes on the cone’s surface – that smooth the response throughout the audible range. The dust cap is blended and treated to provide a smooth transition with the treble unit, which incorporates an advanced ferrite magnet system and a carefully constructed waveguide around the fabric dome for optimal dispersion. Bass performance is enhanced by a newly refined version of the Slot-Loaded Distributed Port, first introduced in the outgoing Diamond 100 Series. Instead of the usual circular reflex port, all Diamond 200 Series models incorporate a port that exits at the base of the speaker cabinet, loaded by a slot that is created by the plinth. This equalises the air pressure to mimic that inside the cabinet, allowing smooth transition between the pressure variation in the cabinet and the low frequency sound developed in the room. The result is deep, articulate and well-integrated bass, without the ‘chuffing’ that is often associated with regular front- or rear-mounted ports. All Wharfedale Diamond 200 Series speakers come in a choice of four finishes – black, white, walnut and rosewood - adding to their smart aesthetics and excellent value for money.