user manual
FLEX ARRAY
FLEX ARRAY user manual
Page 8
The Dendritic Horn
The patent-pending Dendritic HF horn utilises the same essential acoustic principle as is
employed in the Polyhorn: namely the application of equal path length hornlets to generate a
phase-coherent wavefront at the horn mouth. An extension of the principle allows the
Dendritic horn to act as the waveguide for a 1” throat compression driver, and key to the
operation of this new approach is the divide-by-two rule. Each section of the Dendritic
waveguide is split exactly two ways, ensuring that the signal in each leg is identical. In this
manner the output from a single compression driver is spread evenly across sixteen small
outputs.
Although adaptable to a range of output configurations, the Dendritic horn lends itself most
naturally to a slot output. By virtue of its tightly contorted pathways, the Dendritic creates a
very compact device, typically cutting 40% off the length of the external envelope.
The Flex Array Mid/High Waveguide
The Flex Array TFA-600 combines both Polyhorn and Dendritic horn technologies in a single,
physically aligned mid/high waveguide with equal path lengths, which produces a phase-
coherent wavefront at the horn mouth. The Dendritic horn‟s compact dimensions allows the
high frequency driver to be located directly in front of, and mounted concentrically with, the
high-mid frequency driver. The horn‟s shallow geometry, comprising the combined horn and
the concentric mounting of the mid frequency and high frequency drivers, results in a very
compact enclosure with a depth of only 560mm (22”). This is beneficial both for keeping
cluster footprint small and is also a convenient dimension for trucking.
The combined waveguide is square in section, allowing it to be rapidly and easily removed
and rotated within the enclosure to suit the intended application. In this way the 75°
horizontal by 16° vertical coverage pattern can be readily transposed relative to the
orientation of the cabinet.
