Whitepaper

DALI A/S [phone]
www.dali-speakers.com
9
W O O F E R
A major contribution to the sonic improvement from
the original IKON to the MK2 series derives from the
brand new woofer. With the design experience from
the MENTOR series in mind we have developed two
new woofers – a 5” and a 6½” chassis. Applied
in different variations for the individual speakers
this new woofer integrates even better with the
hybrid tweeter module, adding improved dynamic
capabilities and enhanced bass performance.
In recent years, DALI’s signature cone material –
light paper reinforced by mechanically processed
wood fibres – has undergone extensive research
and development. Following numerous in-house
experiments, today this material is applied in almost
all our driver designs. Also the precise structure
of the ‘acoustical ensemble’ – cone, dust cap,
coating, and glue - has been established through
a vast number of experiments with geometry and
materials.
Wood fibres add stiffness to very light paper cone
membranes, ensuring non-uniform break-up
characteristics within the material. Because of the
random position of the wood fibres, resonances
are eliminated before they can pick up enough
energy to become an audible problem. The unique
mixture of structural stiffness, low mass and
damping improves behaviour of the cone, resulting
in outstanding sound reproduction.
The wood fibre technology has proven to be a
key element in reproducing the finest details
and dynamics in the music with very low loss of
information.
Though important, applying the right cone material
for the IKON MK2 woofers is not enough. Many
different curve ratios and wood fibre densities were
tested and re-tested in order to reach the target.
DALI drivers are all proprietary designs, developed from scratch. Tooled and engineered exclusively for each product, all
performance characteristics are tailored to meet the individual speaker requirements.
The rubber surround is moulded from a special low-loss
material and is designed to prevent standing waves, both in
the surround and in the cone.