User’s Manual
E 90 MK II
KLING & FREITAG GMBH ©1995 - 2006
Version 4.0, 02.11.2006
Page 5 of 22
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 secured to the wall according to the mounting instructions on page
Instructions for Loudspeakers). Please note that speakers can move as a result of vibra-
tions. To prevent them from falling from their mounted position, they must be secured
properly.
Speakers may only be mounted to walls and ceilings by qualified personnel. The speakers
must be hung by using at least two of the designated flying points. The same applies
when lifting and aligning the speakers.
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.
When suspending the speakers use only mounting equipment from Kling & Freitag.
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 assembly e-
quipment.
For mobile and fixed installations, use only assembly equipment from Kling & Freitag.
Make sure to observe the included safety and mounting Instructions for loudspeakers and
accessories.
Speakers and rigging equipment must be visually examined at regular intervals. If there
are signs of wear, they must be replaced immediately. Furthermore, screwed connections
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 with-
out the amplifier signalling the clipping, i.e. when there is not sufficient headroom in the
input circuit. 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 cir-
cuit. 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:
−
Integrated or preceding subsonic filter (approx. 20 Hz, min. 12 dB / octave)
−
Integrated clipping limiter
−
Maximum rated power 300W@8
Ω
(equivalent 600W@4
Ω
)
For damage caused by overloading or use with power amplifiers other than those recom-
mended above, Kling & Freitag GmbH does not assume warranty and excludes liability for
possible consequential damage.
Warning
Warning
