4
II – KF700 Series Array Philosophy
Since we set out to develop the KF700 Series for ease of use, we insisted that arrays designed to cover any venue
could be flown quickly, easily, and safely as a dead hung cluster. Such a system would save the user both time and
money while providing his/her client with an acoustically consistent and aesthetically pleasing cluster.
To further enhance utility, the KF700 Series uses a multi-axial approach that creates compact modules that provide
the high “Q” pattern control associated with much larger devices. Combined with the tightly packed, dead-hung
nature of the cluster, this allows for maximum coupling of array elements, providing tremendous output capability
through the low and mid frequency subsections of the array.
Finally, KF700 Series arrays will provide uniform coverage with relatively simplistic processing. We have developed
AS3D array shading to enhance array control and coverage without requiring additional DSP units.
T H E G O L D E N R U L E S
Both our experience and user feedback has led us to develop two Golden Rules for KF700 Series usage. Following
these rules will not guarantee success. However, not following them will definitely compromise array performance.
1
Never let an audience member see a handle on a module in their primary cluster. (It is alright if someone seated
house-right sees a handle on the house-left cluster). The KF700 Series loudspeakers provide a 30
∞
horizontal pat-
tern that drops off very rapidly outside of this nominal angle. Since the physical angle of the enclosure is also 30
∞
,
if you can see the handle, you are out of the pattern. The difference in performance will be audible.
2
Provide separate processing for each row of KF755’s. Using multiple rows of KF755’s allows KF700 Series arrays to
work in a number of challenging venues, but each row of KF755's must be processed independently in order to
achieve proper integration. (N. B. This requires only two channels of output per row in large arrays in which the
KF750's alone produce sufficient LF response.)
III – Building Arrays: Bandwidth by Bandwidth
The soon-to-be-released KF700 Series Owner’s
Manual provides information regarding the funda-
mental design attributes of the modules within the
series. These systems are designed to exhibit pre-
dictable behavior when arrayed, but it is important to
realize that array behavior is not the same as module
behavior. In fact, when arrayed, the individual
devices within a module combine with their counter-
parts in adjacent modules to achieve a different level
of performance that must be addressed as a system. It
is vital to understand the nature of this device cooper-
ation in order to consistently build and ultimately
tune these high performance clusters.
Distributed HF Horns
MF Line Source
LF Line Array
Summary of Contents for KF750 Series
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