W I L S O N A U D I O S P E C I A L T I E S , I N C .
A
SPHERICAL
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ROUP
D
ELAY
™
A musical waveform is a complex overlay of frequencies, amplitudes, and phase relationships. With current
technology, no single transducer can reproduce the full range of music at realistic sound pressure levels while main-
taining consistent dispersion. The solution is the multiple driver array, with specific drivers dedicated to various por-
tions of the frequency range. Multiple drivers introduce their own set of problems, however, chief among them the
challenge of preserving the precise time relationships of the musical waveform.
The key to solving this problem lies in Wilson’s innovative and patented Adjustable Group Delay™ technol-
ogy, which employs movable modules that allow the individual adjustment of the drivers in the time domain. Using
this technology, each driver’s waveform propagation “matches up” with its neighbors’ in such a way to create the
sonic equivalent of a single point source. Certain other loudspeaker makers recognize the need to correctly align
their drivers, but they do so for only one theoretical listening position.
The fact is, misalignment of the drivers by fractions of an inch will audibly degrade transient accuracy,
soundstage height, depth, and width. Misalignment of the drivers will also introduce tonal anomalies that destroy the
otherwise convincing “presence” of an instrument or a singer’s voice. Wilson’s solution for group delay correction
has long set the standard for precise driver positioning in order to insure correct time alignment for a wide range of
real room listening distances and ear heights.
The signature curves in Alexandria’s cabinet are a further evolution of Wilson’s philosophy that truly great
forms follow a corresponding function. They are a visual metaphor for the solution Wilson Audio pioneered to ad-
dress issues of phase coherence exacer-
bated by large speaker systems. Typical
of the creative process, the solution itself
came as a metaphor, or rather, an analogy
to the field of optics and the design of
wide-angle lenses. The means of main-
taining edge-to-edge sharpness at both
close and far focusing distances for a high
quality wide-angle lens suggested a solu-
tion to the similar problem of time domain
accuracy for large speaker systems at
both near and far listening positions.
With Alexandria, Wilson Audio
takes this concept a logical step further,
addressing the issue of optimal driver dis-
persion in the large cabinet system. Ideal
driver dispersion for both near and far lis-
tening positions requires the drivers be
adjustable not only forward and back,
but also able to rotate on their polar axes.
A
LEXANDRIA
®
O
WNER
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S
M
ANUAL
viii
F
IGURE
2 - A
LEXANDRIA
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M
ODULES
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OVE
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SPHERICALLY
TO
C
ORRECT
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ROUP
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Содержание Alexandria X-2 Series
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