User's Manual
LINE 212-6 / LINE 212-9
KLING & FREITAG GMBH ©2003 - 2005
Version 4.1, 23.03.2006
Page 26 of 37
11.
Operating the LINE 212 System
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Switch off all equipment and turn down all level controls.
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Wire the LINE 212 System according to the connecting diagrams overleaf.
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Upon completing the wiring, ensure that the connected speaker channels are working in
phase. To do so, use i.e. a phase checker. A phase error can also be recognized when the
connected channels are used simultaneously. During simultaneous use the bass frequen-
cies become notably quieter or the mid-frequencies such as voices cannot be located.
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Switch on first the peripheral units (mixer, effects, etc.), then the C2 Controller and
connect lastly the power amplifiers. Always adhere to this sequence when switching on
your equipment. Switching on the units in a different order could cause a cracking noise,
which could damage the system.
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Now turn up the input controls of the amplifier. If there is interference, turn off all
appliances in the reverse order and check all cable connections (see instructions for avoid-
ing ground loops).
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Next, turn on the C2 Controller and the other peripheral equipment and make sure there
is no interference.
−
Now put a low level signal into the system and check for the correct function of the
system. In doing so, all amplifier input controls need to be turned down again. Now turn
on the control for the left Line 212 system and check that the correct signal is coming out
of the top speaker. The ‘Sense’ LED for the top speaker (i.e. CH 1 TOP signal) of the C2
Controller will light up green at a level of at ca. -40dB. The other channels of the system
are checked in the same way. If the wrong LED lights up or a wrong (i.e., in 2-way active
mode, low signal from a high frequency speaker) or distorted signal occurs, then there is a
mistake in the wiring.
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The system is now ready to operate. The power amplifiers can now be turned on all the
way. Use the gain control on the C2 Controller to set the level of the system to the desired
setting.
The levels on the mixing console can now be turned up. When turning off the system, the
input controls for the power amplifiers should be turned down first followed by the power
switches of the amplifiers. After that, the other appliances can be turned off.
Important
