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楼主 |
发表于 2007-7-31 23:08
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1) The RiCom ultra and its special features
 The PLATINUM tweeter RiCom ultra is a completely new development and, like the larger AURUM RiCom before it, generates superb sound by way of an annular diaphragm. Nevertheless, there are significant differences between the two. For example, the RiCom ultra is equipped with a smaller and lighter diaphragm of rigid titanium which is centred on its outer and inner edges by a flexible fabric bead. A further difference lies in the fact that the larger unit has a large double magnet while the RiCom ultra is driven by a smaller but equally powerful neodymium ring.
Soundwise fascinating: The ring radiator doesn’t produce any sound of its own, and thus neither sounds like a dome unit, nor like a ribbon, or even like the professional-standard ring radiator that is thought highly of because of its efficiency. Instead, it makes for mercurial liveliness, optimal definition, broadband frequency response and outstanding acoustic neutrality.
Visually, the RiCom ultra’s painstakingly designed sound radiation channel system brings a volume-boosting horn to mind, but in actual fact it also serves to enhance the efficiency and dynamics in the lower trebles.
However, this is no more than a welcome side effect, since the actual purpose of the channel system is to adjust the tweeter’s angle of radiation in the vicinity of the crossover frequency to that of a larger midranger. The success of this concept is reflected in the exceptionally high degree of homogeneity exhibited by the PLATINUM loudspeaker in the middle and treble range. All the overtones come over like a unified whole, as if reproduced by one single chassis rather than two.
The influence exerted by this channelling lessens as the frequency increases, with the result that the RiCom ultra’s excellent acoustic dispersion of the high trebles creates what is even then an exceptionally wide soundstage.
The PLATINUM speakers thus retain their excellent characteristics in terms of sound even beyond their main axis – and make for the very finest reproduction of the high trebles for listeners sat right to their side as well.
Citation: AUDIO 3/07, PLATINUM ULTRA 9 about RiCom ultra:
"... You won’t find a better configured and matched tweeter in this price class – even when measured on different axes, the RiCom unit remains fascinatingly linear." |
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发表于 2007-7-31 19:43
