KLING & FREITAG Self powered, User Manual

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User's Manual K&F Self Powered Subwoofer Systems 'SP'
KLING & FREITAG GMBH ©2003 - 2005 Page 7 of 49
Maintenance and technical service
The user should not perform any maintenance work on the equipment other than that
which is described in this manual. Repairs should be executed by a qualified service
technician only.
In the following cases, the unit should be serviced by an authorized technician only if:
−
the power cord or the mains connectors have been damaged.
−
objects or liquids have gotten into it.
−
it was exposed to rain.
−
it doesn't appear to be functioning properly.
−
it has fallen down or the enclosure is damaged.
Mounting the speakers
If the weight of the speaker exceeds 25 kg then it is necessary for two people to carry it.
To prevent injury, this equipment must be securely placed on the floor or secured to the
wall according to the mounting instructions. Speakers, which are stacked, must be se-
cured with securing straps. Please note that speakers can move as a result of vibrations.
To prevent them from falling from their mounted position, they must be secured prop-
erly.
Speakers may only be suspended by qualified personnel.
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.
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 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 assembly
equipment.
For mobile and fixed installations, use only rigging equipment from KLING & FREITAG.
Make sure to observe the included safety and mounting instructions for loudspeakers
and accessories.
Unwanted noise
RF interference to the AC power lines or input lines may cause unwanted noise.
Damage caused by the speakers' magnetic fields
Speakers are permanently surrounded by a magnetic field, even when they are not op-
erating. Therefore, during transport and placement of the speakers, it is important to
ensure that there is always approx. 1 m between the speakers and magnetic data media
and computer/video monitors.
The following signals may damage the speakers
−
permanent high-pitched signals with high frequency and continuous noise from
feedback
−
permanently distorted signals with high power.
−
noises, which occur when the SP speaker is connected while equipment is being
connected, disconnected or switched on.
Preventing hearing damage
To prevent the risk of hearing damage, avoid being too close to operating speakers,
even if the volume level seems to be low enough. In general, volume levels over 90 dB
can cause hearing damage.
Warning
Important
Caution