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User's Manual
7.
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8.
The K&F SPECTRA 212 speaker system is designed and constructed as a top. When using it as a main
sound-reinforcement system, we recommend using an additional K&F subwoofer.
Our recommendation is using K&F subwoofers from the K&F NOMOS range.
Example configurations:
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(1x) K&F SPECTRA 212
(1x) K&F NOMOS LS2
(1x) K&F NOMOS LT
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3 x SPECTRA 212
(3x) K&F NOMOS XLT
All setups depend on their intended use, the required beamwidth, and the on-site conditions.
8.1
If you want to use the K&F SPECTRA 212 as a point source in full-range mode, configure the speaker for
the point source mode as described in chapter 'Operating mode: Point source' at page 14. Select the ap-
propriate preset on the K&F SystemAmp or K&F SystemRack. Whenwiring your system, be sure to assign
the channels correctly (see page 19).
Presets:
K&F SystemAmp:
K&F SystemRack:
Page 20 of 35
Initial Operation
Switch off all devices and turn down all volume controls on the mixing console and the amplifiers.
Wire your K&F SPECTRA 212 systems as described in this manual.
Switch on the devices in the following order: first the mixing console, then the controller and fi-
nally the power amplifiers! Be sure to observe this power-up sequence at all times. Otherwise
switching noises may damage the system.
If you hear noise, turn off all devices in reverse order, then check all cable connections.
Turn up all amplifier channels one after another and output a low-volume signal to the system.
Check to see if the desired signals are applied to the intended speakers and make sure there is no
interference.
With amplifiers with insufficient input-stage headroom, you may not always be able to prevent dis-
tortion by reducing the power-amp volume controls. In this case, the clipping indicator may not
light when clipping actually occurs! To prevent damage to the speakers, we recommend fully turn-
ing up the power-amp volume controls, then carefully turn up the volume on the mixing console
or controller or reduce the limiter threshold of the controller as appropriate in order not to overload
the amplifiers.
When turning off the system, first turn down the amplifier input controls. Next, power down the
amplifiers, then turn off the remaining devices.
Setups and Connection Diagrams
Setup 1: 1× K&F Spectra 212 point source in full-range mode
SPECTRA 212 PS FR
Spec212 PS FR
Version 1.5
K&F SPECTRA 212
© KLING & FREITAG GMBH
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