User manual DALI EUPHONIA PHANTOM

[. . . ] As a rule of thumb, the floor-standing speaker will generate more reflections in a room and offer lower sensitivity in comparison with an in-wall speaker. The floor-standing speaker essentially radiates sound in a 360° angle, dispersing acoustical energy across a far larger area of the room. An in-wall has the dual advantages of reduced room reflections and higher sensitivity, as it only disperses acoustical energy in In fact, an in-wall design is, theoretically speaking in several aspects, a "better" defined acoustical solution than a conventional floor-standing loudspeaker. However, there are crucial trade-off's that must be addressed before rushing to exploit the obvious advantages of an in-wall solution. [. . . ] 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. In order to achieve low distortion, the magnetic field (flux density) must be absolutely stable and independent of voice coil motion. Such designs typically use a thick pole plate in order to increase the conductivity of the magnetic circuit. In the Euphonia Phantom bass/midrange driver, we have focused on stabilizing the magnetic flux in order to optimise the quality, not just the quantity of flux. By using very powerful magnet and a very thin pole plate, we drive the pole plate iron into the "saturation" area, where flux density is stabilized at a precisely defined level. This saturation principle is analogous to Class A power amplifiers where output current flows from a saturated bias circuit, stabilising the operating parameters for the amplifier's electrical components substantially. Euphonia IWS 3 Phantom It is commonly known that this design principle ensures lower audible distortion, a more "relaxed" sound and higher subjective output power than indicated by the specifications. Similar advantages are offered by the Phantom's "Class A" magnet principle and, as in the world of amplifiers, the result is significantly better audible performance than a first glance at the specs would indicate. They both deliver extremely smooth, wide horizontal dispersion, one of DALI's sound design trademarks. 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 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. The ribbon tweeter is gently rolled in above 10 kHz, reaching full contribution from 13 kHz to well beyond 30 kHz. [. . . ] DALI sound dispersion in a room The sound from an in-wall speaker generates fewer reflections than a typical floor-standing loudspeaker. The listener will experience fewer reflections and less time smear, resulting in clear, accurate sound. But these inherent advantages can only be fully appreciated if the in-wall speaker has been designed to resist the influence of a "soft" wall and the cavity wall. DALI Euphonia Phantom is designed to deliver exceptional sound quality independent of the characteristics of the wall and wall cavity in which it is mounted. [. . . ]