White Paper
Euphonia IWS 3 Phantom
The front baffle is firmly attached to the aluminium enclosure. Together they form a
structure that cancels vibrations and resonances.
The rear enclosure fits a standard 4-inch deep wall. Its restricted depth also
contributes to the preservation of audio quality, as the cabinet is too small for
standing waves to build up.
The rigidness of the aluminium, the cast bracing ribs, the interior vibration
absorbing layer, the MDF front baffle combine with the aluminium rear enclosure
and the compact dimensions of the Euphonia Phantom form a unique sonically
damped solution, perfect for a high performance in-wall speaker.
Driving Miss Phantom
The Euphonia IWS 3 Phantom employs a 6½” bass/midrange and a Hybrid Tweeter
Module consisting of a 29 mm soft dome tweeter and a 10 x 55 mm ribbon tweeter in a
sealed enclosure.
6½” – When Size
and
Space Matter
The 6½” bass/midrange unit is custom-made for the Euphonia series. In order to achieve
our sound design principles of “Time Coherence” and “3D
Audio,” the cone must be very fast and very lightweight.
To achieve these goals, we developed a type of paper cone that
contains unusually long wood fibres in a carefully measured
proportion.
The shape of the cone is optimised to effectively transform the electrical signal at the voice
coil into corresponding air motion and to provide wide dispersion – another DALI sound
design principle.
Paper has a low density and is able to move very fast – at frequencies up to 10 kHz, but
because of its low mass, vibrations in an ordinary paper cone will have an undesirable
characteristic sound.
In Euphonia Phantom, these vibrations are eliminated through the use of wood fibres and
double coating of the cone.
The wood fibres distribute energy in all directions due to their
random alignment in the cone, thereby eliminating the material’s
“own sound”.
The cone, spider and surround are mounted in a rigid, ventilated
die-cast aluminium chassis with no cavity underneath the spider
and a vent in the pole piece (yoke) to prevent compression behind
the dust cap. These measures prevent compression and improve
free airflow.
Page 5 of 14
