KLING & FREITAG K&F ACCESS T9 - Manual (Page 5)

User’s Manual ACCESS SYSTEM
KLING & FREITAG GMBH ©1995-2009 Version 6.0, 17.03.2009 Page 5 of 60
1. General Safety Instructions for Using Speakers
Mounting the speakers
To prevent injury or property damage, this equipment must be securely placed on the floor
or mounted in a different manner according to the mounting instructions on page 40
( Mounting Instructions for Loudspeakers). Speakers, which are stacked, must be secured
with safety straps. Please note that speakers can move as a result of vibrations. To pre-
vent them from falling from their mounted position, they must be secured properly.
If the weight of the speaker exceeds 20 kg then it is necessary for two people to carry it.
Speakers may only be mounted to walls and ceilings by qualified personnel. The speak-
ers must be hung by using the two designated MAN flying points on the sides of the
speaker. The same applies when lifting and aligning the speakers. Only connections
designed to fit the flying points should be used. If in doubt, please consult the manufac-
turer.
The bass system ACCESS B10 is not designed for flown applications.
Never use signal cables or power cords for suspending, aligning or securing the systems.
When laying the connecting cables, make sure that nobody can trip.
Never hang more than two speakers under one another without using the designated
Kling & Freitag rigging equipment.
Ensure that all installation connections comply with the applicable safety guidelines and
that the size and strength are sufficient. Further instructions are in our user's manual for
assembly equipment and in the general safety instructions for speakers and accessories.
For mobile and fixed installations, use only mounting accessories from Kling & Freitag, if
possible.
Speakers and mounting accessories must be visually examined at regular intervals. If
there are signs of wear, they must be replaced immediately. Furthermore, screwed con-
nections of supporting parts must be checked routinely.
Protecting the speakers / avoiding fire hazard
In general, audio signals should not be overdriven. This may be caused by mixing consoles,
equalizers, effect equipment, etc. and should be indicated on this equipment. When a power
amplifier is overloaded at the output (clipping), then the amplifier should activate a clipping
warning signal. Power amplifiers can also be overloaded at the input circuit without the
amplifier signalling the clipping, i.e. when there is not sufficient headroom in the input cir-
cuit. We, therefore, recommend turning up the power amplifiers all the way and adjusting
the level before the power amplifier in order to avoid overloading the input circuit. In any
case, the signal must be reduced as soon as it sounds unnaturally distorted.
−
To protect the speakers from being destroyed and to avoid fire hazard, they should
only be operated with professional power amplifiers with the following specifications:
− Amplification according to the instructions in the chapter Recommended Amplifier
Performance for the ACCESS System from page 38 onwards.
− Integrated clipping limiter
− without using a Kling & Freitag controller (not recommended):
Integrated or preceding subsonic filter (approx. 20 Hz, min. 12 dB / octave)
Power amplifiers with power specifications lower than those stated from page
39 onwards must be supplied with a clip limiter for speaker protection, even if
they are operated with a Kling & Freitag system controller.
If you wish to use a speaker with a power amplifier that does not fulfil these specifications,
then the speaker should be controlled using a Kling & Freitag system controller with limiter
function. This is the only way overloading and the risk of fire can be avoided. The results of
such a power amplifier defect cannot be avoided by the controller.
For damage caused by overloading or use with power amplifiers other than those rec-
ommended above or with amplifiers with higher output power, Kling & Freitag GmbH
does not assume warranty and excludes liability for possible consequential damage.
Warning
Warning