d&b audiotechnik E6530, E6531, 1220, E6502, 1222 Mounting Instructions
E6530/E6531/E6502
1220/1222
Loudspeaker accessories
Mounting instructions
WARNING!
IMPORTANT!
CAUTION!
General Information
Mounting instructions
E6530/6531/E6502, 1220/1222 Loudspeaker accessories
Version 4.0E, 10/2000, D0020021
Copyright d&b audiotechnik AG 2000; all rights reserved.
The information presented in this document is, to the best of our
knowledge, correct. We will however not be held responsible for
the consequences of any errors or omissions. Technical
specifications, weights and dimensions can change and should
always be confirmed with d&b audiotechnik AG prior to inclusion
in any additional documentation.
d&b audiotechnik AG
Eugen-Adolff-Strasse 134, D-71522 Backnang
Telephone +49-7191-9669-0, Fax +49-7191-95 00 00
E6530/6531/E6502, 1220/1222 Loudspeaker accessories
References in the manual
This refers to a potentially dangerous situation which may lead
to personal injury.
This refers to a potentially dangerous situation which may lead to
equipment damage.
This refers to a situation which may
cause the equipment to malfunction.
Symbols on the equipment
Please refer to the information in
the operating manual.
(2.0 E) 3-8
WARNING!
WARNING!
General Safety and Installation Advice
General safety advice
d&b loudspeakers should only ever be flown or installed using
recommended d&b rigging accessories. The d&b rigging accessories
described in the d&b rigging accessories manual and the specific
mounting instructions are designed and manufactured to have a
high load safety factor for their intended role. In order to ensure
the highest safety standards, the information presented here on the
assembly and safe use of d&b rigging accessories must be carefully
understood and followed.
The installation of d&b loudspeakers using the rigging accessories
described in the d&b rigging accessories manual and the specific
mounting instructions should only ever be carried out by properly
qualified personnel in full compliance with all required safety codes
and safety standards in force at the place of installation.
(In Germany, this means compliance with the recommendations of
BGV C1 GUV 6.15)
d&b rigging accessories (components and assemblies) are supplied
exclusively for use with specific d&b loudspeakers and are not
designed or intended for use with any other loudspeakers or any
other devices. The use of d&b rigging accessories to deploy
loudspeakers and devices other than those indicated in the d&b
rigging accessories manual and the specific mounting instructions is
improper use. Improper use can compromise safety by overloading
and damaging the rigging accessories. d&b will not be held
responsible for any damage or injury resulting directly or indirectly
from the improper use of d&b rigging accessories.
d&b rigging accessories must not be modified in any way nor should
they be assembled in ways other than those indicated in the d&b
rigging accessories manual and the specific mounting instructions.
Rigging components supplied as part of a complete assembly are
non-interchangeable and must not be exchanged with the
component parts of any other assembly.
The component parts of a d&b rigging accessory must only be
assembled using the fasteners and methods of assembly
recommended in the d&b rigging accessories manual and the
specific mounting instructions. The use of fasteners and methods of
assembly not specified or approved by d&b may result in an unsafe
rigging assembly. Welding, or any other means of permanently
fixing rigging components to each other or to cabinet fixing points is
not allowed.
General installation advice
Only the screws, fasteners, plain and shakeproof washers specified
on the relevant page(s) of the d&b rigging accessories manual and
the specific mounting instructions shall be used to fasten together,
where appropriate, suitable d&b rigging components.
d&b rigging components or assemblies must only be fixed to d&b
loudspeaker cabinets using the cabinet fixing points, assembly
methods and fasteners specified on the relevant page(s) of the d&b
rigging accessories manual and the specific mounting instructions.
Any wall, floor or ceiling to which a d&b loudspeaker is fixed or
4-8 General safety and mounting instructions
WARNING!
WARNING!
WARNING!
attached using a d&b rigging accessory must be capable of safely
and securely supporting the actual load. The rigging accessory used
must be safely and securely fixed both to the loudspeaker and to
the wall, floor or ceiling.
Other points to consider are: When mounting rigging components
on walls, floors or ceilings ensure that all fixings and fasteners used
are of an appropriate size and load rating (DIN 18800 standards
apply within Germany). Wall and ceiling claddings and the
construction and composition of walls and ceilings all need to be
taken into account when determining whether a particular fixing
arrangement can be safely employed for a particular load. Cavity
plugs or other specialist fixings, if required, must be of an
appropriate type, fitted and used in accordance with the makers
instructions.
Use only the rigging accessory fixing holes indicated on the relevant
page(s) of the d&b rigging accessories manual and the specific
mounting instructions to fix d&b rigging accessories to walls, floors
or ceilings. Where specified, the recommended maximum torque
settings for screw fasteners must be strictly complied with.
Secondary safeties
All loudspeakers flown in theatres, studios or other places of work
and entertainment must, in addition to the principle load bearing
means of suspension, be provided with an independent, properly
rated and securely attached secondary safety.
Only steel wire ropes or steel chains of an approved construction
and load rating may be used as secondary safeties. Plastic covered
steel wire ropes are not permitted for use as secondary safeties. As
recommended by BGV C1 (GUV 6.15), the secondary safety must
prevent the load from dropping more than 20 cm if the principal
means of suspension fails.
Safety inspections
All rigging components and assemblies are subject to wear and
tear, aging, corrosion etc. As safety critical components, its
imperative that, prior to each and every use or installation, all
rigging components, rigging assemblies and cabinet fixing points
are carefully inspected to ensure that they are free of defects and
that they function flawlessly. Care should be taken to identify signs
of undue wear and tear, dents, cuts, tears, splits and any
indications of corrosion. If upon inspection, damage is discovered
and there exists even the slightest doubt as to the physical integrity
and safety of the damaged item, then the damaged item must not,
under any circumstances, be deployed.
Regular, more rigorous test and inspection of rigging components
must also be carried out. Safety legislation and test and inspection
requirements will vary from country to country. In most cases,
annual independent test and inspection by a suitably approved and
qualified inspector will be required - users must ensure compliance
with all applicable safety requirements.
d&b recommends regular safety inspections and further
recommends that a logbook be kept detailing the test and inspection
history of each d&b rigging accessory.
(2.0 E) 5-8
Load safety factors
Rigging accessories are safety critical components which can, by
their failure, lead to injury or death. To maximise safety and to
reduce the risk of the possible consequences of failure, there exist
various recommendations which attempt to govern the safe design
and construction of rigging components. Unfortunately, such
recommendations vary from country to country and are frequently
adaptations of building or construction safety codes which were
never intended to specifically cover loudspeaker rigging.
A further complicating factor, frequently a result of insurance
requirements, is that different load safety factors may be demanded
for different applications. For example, the load safety factor of a
rigging component suitable for a fixed, static application may be
regarded as insufficient for a mobile application.
What exactly is a load safety factor?
It is accepted general engineering practice to design and build
components to have a minimum 1.25X load safety factor. That
means a component or assembly that can resist without breaking, a
load 25% greater than its specified safe working load (SWL).
Load safety factors are tailored to the estimated level of risk
presented by a particular application - the higher the estimated
level of risk, then the higher the load safety factor demanded.
Because of the high level of risk associated with the possible failure
of rigging, load safety factors much greater than 1.25X are
demanded. The EU Machinery Directive for example, specifies a 4X
load safety factor for shackles. This means that a shackle specified
for a SWL of 500 kg should be able to resist a 2000 kg load without
breaking.
Even more stringent load safety factors than those specified under
EU legislation can apply to applications where rigging is used. One
of the most demanding safety codes, the one used to derive the
high load safety factors for d&b rigging accessories, is the German
BGV C1 safety code.
Section §9 of Unfallverhütungsvorschrift Veranstaltungs- und
Produktionsstätten für szenische Darstellung (BGV C1 GUV 6.15)
draws a distinction between components used to rig a fixed, static
load and components used to rig a moving load. Different load
safety factors are required for otherwise similar components
depending upon whether they are used with a fixed or with a
moving load. A higher load safety factor being required for rigging
subject to the higher stress of dynamic loading.
The recommendations are met if it can be shown that:
The SWL of components such as ropes and slings used as
rigging for a fixed load does not exceed 1/10 of their
calculated ultimate stress
and
The SWL of components such as ropes and slings used as
rigging for a moving load does not exceed 1/12 of their
calculated ultimate stress ...
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