Specifications

TI 323 (6.0E)
3 - 36
C-Series
A modular concept
The d&b audiotechnik C4 system has been
specifically optimized for flexible, modular array
configurations and high sound pressure levels.
Applications range from professional touring industry
use and large scale sound system installations, down
to single cabinet set ups requiring narrow dispersion
over a wide frequency range with minimum
dimensions. The "d&b specific" combination of a
natural, intelligible sound character that is clear and
transparent even at high sound pressure levels provides
the engineer with an efficient, effortless tool and a
neutral platform for the creative part of his work.
d&b's co-operation with MAN flying systems resulted in a
flexible mechanical structure for quick and easy set up of
array configurations with small footprints. All relevant
parts of the system have load safety factors type
approved to the German BGV C1 safety standard.
Software support for planning and calculating flown set
ups, regular safety checks, certification for mobile systems
and training seminars for practical handling aspects and
safety conscious use, all add up to complete the
mechanical concept of the C4 system. Centralized
computer set up, control and maintenance has been a
feature of d&b systems from the very beginning. All
mainframes can be networked via the d&b Remote
Interface Bridge (RIB), and with the addition of the d&b
ROPE software package user specific system control and
monitoring is accessible.
d&b is acutely aware that managing a rental business
puts tight requirements on the logistics and flexibility of a
system. Technically autonomous systems can be combined
and split in a wide variety of combinations. Light weight,
a compact size that takes into account standard truck
widths and modular packaging of the electronics all result
in time, space and cost benefits when commissioning and
transporting the system. In addition the full acoustical,
mechanical and electrical compatibility of all d&b systems
worldwide, results in high flexibility and availability when
scheduling events. This is d&b's system approach: all
loudspeakers, electronics, mechanics, design tools,
documentation and training, support and service are
designed and matched for the ease of the sound
designer, the system and balance engineer, the
warehouse manager and the system owner.
d&b systems are serious investments, however they excel
in return on investment versus total cost of ownership. For
medium to large scale sound reinforcement applications
the C3, C4-TOP and C4-SUB loudspeakers form the
basis of a modular, arrayable system, along with the
B2-SUB infrabass. The C3 is the line array module for
the C4 system. It distinguishes itself from conventional line
array concepts in several respects. First of all, with its
horizontal dispersion of 35°, it is meant to be part of a
larger array that can be precisely designed for the
specific horizontal and vertical coverage that is actually
required in an application. If necessary, it allows for
flawless horizontal coupling when wider coverage over
longer distances is needed. Secondly, it works as a 2 or 3
cabinet column within a C4 cluster, adding long throw
capability for the high end. And, last but not least, with its
unique wave front adapter that couples a total of three
1.3" exit drivers, it exhibits superbly controlled curved
coherent wavefronts up to 16 kHz at any vertical angle
between 1° and 5°. This also allows a full line array
approach without losing HF efficiency. Theoretical studies,
computer aided design and extensive practical tests led
to the influential, but unequalled coaxial horn-in-horn
design of the C4-TOP loudspeaker. It is the constant
directivity module of the C4 system and features an
exceptionally constant and narrow 35° x 35° dispersion
down to 700 Hz. The C4-SUB has been designed
specifically as the flown subwoofer in a C4 system. Its
frequency response extends down to 50 Hz, and its
cabinet shape, size and flying arrangements are totally
compatible with the C3 and C4-TOP. For extended low
frequency reproduction, the B2-SUB infrabass system is
used. The low end of the frequency range is produced
much more efficiently in a ground coupled configuration,
and for this reason there are no flying fittings on a B2
cabinet. Near field requirements can be met by the C7
and MAX systems. The C4 system and B2 are driven by
the P1200A and A1 mainframes respectively.
The following TI describes the loudspeakers and their
characteristics, system amplification, connections,
acoustical parameters, system design and the rigging
concept, devices and tools. It also contains examples of
proven system set ups of various sizes.