Whitepaper

4
DALI A/S www.dali-speakers.com
CABINET
Working both as an acoustic tuned
‘spring’ for the drivers, as well as
getting rid of reaction force (resonant)
energy, the cabinet is an important part
of the entire speaker system.
A rigid construction is necessary to
optimize the working environment for
both woofers and tweeter. The front
baffle, sides and top of the EPICON
speakers are heated in a process that
allows us to press them into an organic
shape. This design increases overall
rigidity and severely reduces cabinet
resonances. Furthermore standing
waves are practically eliminated as
there are no parallel surfaces reflecting
sound waves.
It has always been DALI’s aim to minimize the delay between the driver and the bass
port. The position of the bass ports close to the woofers create as direct a connection
as possible. The less delay the better chance for optimizing timing – and the more
accurate transient response you get.
Meticulous attention to CNC milling of the front baffle creates more space between
the 7 screws, ensuring a free airflow behind the woofers. A detail supporting our
low-loss design as well as our focus on timing.
Each side of the EPICON 2, 6, and 8 is
constructed from 6 individual layers of
MDF, all glued together. In the EPICON
2 and 6 these are anchored to the
53 mm multi-layer MDF backbone
of the cabinet. To maintain control in
the larger EPICON 8 the backbone is
63 mm thick. CNC milling process is
applied for making the recess and
holes for the bass ports and terminals
in the backbone.
With a thickness of 33 mm the dual-
layer front baffle ensures that energy
from the drivers is radiated as acoustic
energy, and not as vibrations in the
cabinet. The curved shape of the front
baffle is also a contributing factor in
ensuring a stable acoustic platform.
Internally the cabinet for the EPICON
6 is divided in two identical sized
chambers, allowing tuning of the
cabinet to be done identically yet
completely independently for each
of the two woofers. Thus you will
find two bass ports on the back of
the cabinet located as nearby the
woofers as possible. Both ports
are convex tapered in both ends to
minimize port turbulence.
At the very bottom of the cabinet,
however, you will see that the
hardwired crossover is mounted in its
own enclosure as well - free from the
dynamic variation of cabinet pressure
inside the bass reflex enclosures.