Genesis I.C.E. 201 - Manual (Page 19)

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a bs o l u t e f i d e l i t y
The Technology
The Genesis 201 loudspeaker comprises four “towers”: two
midrange/tweeter panels and two bass towers. Each tower is 6 feet
tall (183cm), and the cabinet is made of a vibration damping and
resonance-control acrylic composite sandwich material.
The rationale for the four-tower system separating the woofers from
the midrange/tweeters is to allow the placement of the
midrange/tweeter panels to optimize soundstage, and the
placement of the woofer towers to optimize in-room bass response.
Design Philosophy
Nothing has changed in theoretical acoustics since Lord Rayleigh’s
original book on acoustics published in 1877. There are still only
two proper ways for a transducer to propagate sound in a room: a
point source and a line source. Anything else, or everything in
between, is a compromise.
In order for all frequencies of
sound from the loudspeaker to
reach the listener at exactly the
same time, a coherent wave front
is important - not just “time-
alignment” of drivers. The ideal is
either an infinitely small pulsating
point or a pulsating line with a size
on the order of the room
dimension.
Obviously, a line-source is much
easier to mechanize than the ideal
point source. The line-source (if
large enough), can approximate
the ideal, and in doing so, provide sufficient radiating area for
dynamically and spatially realistic sound reproduction.
The Genesis 201 is a line-source that is 4 feet long (nearly the half
the room’s entire height). A line source has no vertical dispersion at
any frequency. Hence there is no sound bouncing from either the
floor or the ceiling. No deleterious interference from these surfaces
is created (as in virtually all other kinds of speakers).
John William Strutt Lord Rayleigh (1842 – 1919)