User`s manual

User’s Manual Digital Controller CD 24
KLING & FREITAG GMBH ©2007 Version 5.0, 08.11.2007 Page 27 of 47
Am
AmAm
Am
p
pp
pGain
GainGain
Gain
This is where the CD 24 shows the determined amplifier gain of the power amplifiers
connected to the SENSE / RETURN connectors. After switching off the unit the settings
always stay at the last plausibly determined value. As soon as a signal that can be ana-
lysed by the controller is applied to the Sense connectors, the controller determines the
gain of the connected power amplifier. This value helps the controller to automatically
adjust the limiter threshold. The controller continually checks this value and re-adjusts the
limiter thresholds automatically, for example, when the gain of the power amplifier is
changed manually.
− Amp1 for power amplifier channel at CH1
− Amp2 for power amplifier channel at CH2
− Amp3 for power amplifier channel at CH3
− Amp4 for power amplifier channel at CH4
Exceptio
ExceptioExceptio
Exception:
n:n:
n:
When operating the CD 24 with SP speakers, the AMP RETURN / SENSE
When operating the CD 24 with SP speakers, the AMP RETURN / SENSE When operating the CD 24 with SP speakers, the AMP RETURN / SENSE
When operating the CD 24 with SP speakers, the AMP RETURN / SENSE
inputs are not used, since the SP speakers are equipped with their own limiters. See
inputs are not used, since the SP speakers are equipped with their own limiters. See inputs are not used, since the SP speakers are equipped with their own limiters. See
inputs are not used, since the SP speakers are equipped with their own limiters. See
more on this topic in the chapter
more on this topic in the chapter more on this topic in the chapter
more on this topic in the chapter SP
SPSP
SP Speakers
SpeakersSpeakers
Speakers on
onon
on the
thethe
the CD
CDCD
CD 24
2424
24 a
aa
as of page
s of pages of page
s of page 40
4040
40.
..
.
LimReduction
LimReductionLimReduction
LimReduction
The limiters have been set during manufacturing so that they provide optimal operating
safety and a wide dynamic range when used with adequately sized power amplifiers.
− If power amplifiers are used that are too small, the limiter threshold can be decreased
by up to 20 dB so that the power amplifier does not begin to clip.
− For events where a reduction of the sound emissions is legally required, you can ad-
just the limiter so that the maximum permitted sound level is observed.
− Rental companies can set the limiter lower to protect their speakers from overloads
caused by untrained personnel. For example: long-lasting techno events where the
speakers can be pushed to their limits.
9.6.4 Functions of the Menu Items under 'Util'
For general settings of the CD 24.
Util
Util Util
Util →
→ →
→
Routin
RoutinRoutin
Routin
g
gg
g
This is where you can call up pre-configured routings in the Controller CD 24.
The routings determine how one or more input signals can be connected to one an-
other and to the outputs, and which route the signals take. When you call up the
routings saved in the CD 24, you have the possibility to configure the controller ac-
cording to the demands of your application.
Familiarise yourself with the routings in order to optimally use the functions of the
controller. You can find a detailed explanation with examples under Routings with Ex-
amples of Use and Connecting Diagrams on page 29.
Dis
DisDis
Dis
p
pp
pla
lala
lay
yy
y
Here, you can adjust the contrast for the display.
Important