White Paper
Euphonia IWS 3 Phantom
Dome, Sweet Dome
The 29 mm oversized soft dome tweeter is especially designed for DALI. The tweeter is
designed with a neodymium magnet structure with a rear chamber, a coated silk dome and
a very long voice coil that allows undistorted reproduction of the high frequencies.
The magnet system has three powerful neodymium magnets that provide a strong and
stable magnet system.
Copper rings are utilized to further enhance performance and to short circuit eddy currents
in the magnet system, as well as optimise the impedance characteristics.
The rear plate of the magnet system is ventilated to allow acoustical passage to the rear
chamber of the tweeter for a significantly lowered resonance frequency of 750 Hz.
The rear chamber itself is damped to suppress undesirable resonances.
The geometry of the soft dome tweeter is designed for optimum dispersion characteristics
and well-controlled rigidity. Rigidity is increased using a special coating on the silk dome.
The coating is applied in a multi-step process in order to obtain the desired characteristics
without sacrificing dynamics.
All this ensures an unparalleled impulse response and energy-time-frequency
characteristics.
The voice coil is wound on a perforated aluminium form (for low compression) with extra
large winding width for long-throw excursion. This ensures that compression is minimised
when the soft dome tweeter handles high peak signals and enhances power handling.
The soft dome tweeter is rolled in carefully around 3 kHz and is allowed to operate up to its
natural high frequency limit well beyond 20 kHz without being rolled off in the crossover.
Together, these features ensure smooth, stable performance – enhancing the overall
quality of high frequency reproduction.
Deserves a Ribbon
As in the ultra high end DALI MegaLine, a ribbon tweeter is used in DALI Euphonia IWS 3
Phantom. The ribbon tweeter has a broad frequency band and superb dispersion of the
highest frequencies. The ribbon tweeter is gently rolled in above 10 kHz, reaching full
contribution from 13 kHz to well beyond 30 kHz. The ribbon tweeter is a master in the
horizontal dispersion of high frequencies and is a superb partner for the soft dome
tweeter’s unique ability to reproduce frequencies from 3 kHz upwards.
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