Dynacord CMS 1000 Mode D'emploi page 11

18. LINE TRIM
Control for matching incoming line level signals to the mixer's operating level. The total adjustment range is
30dB. Unity gain – no amplification (0 dB) – is achieved at the 0dB mark. The control offers level reduction of
–10dB or amplification of +20dB. This range allows the connection of most professional, semi professional, and
hi-fi sound sources. For further details on how to set the LINE TRIM control, please refer to the description of
gain controls in monaural channels.
If your sound source is a keyboard connected to one of the stereo inputs, make sure that no split zones or layers
with channel separation are activated. Otherwise, the stereo channel mapping will appear like it is set on the
keyboard – the lower layer in the left and the top layer in the right channel – and you will not have the opportunity
to re-position the sound in the overall stereo image, unless you connect the keyboard output to two adjacent
monaural input channels, leaving you the option to place the sound in the final mix via PAN controls.
One more tip, in case you desperately need another input and all channels of the CMS are already in use: The
microphone input and the phone plug-type inputs are electrically totally separated from each other. Each input
is equipped with its own gain control – respectively trim control, providing you with the possibility to connect
a LINE level sound source in addition to a microphone. Of course, the two sources share all other controls.
Consequently, separate adjustment is not possible.
This option is only meant as a subsidiary function and should only be used when there is absolutely no other
alternative.
19. EQ SECTION
The mixer's EQ section allows very comprehensive and effective shaping of the incoming audio signal within
miscellaneous frequency bands. Turning one of the EQ level controls to the right enhances/amplifies the
corresponding frequency range while turning it to the left lowers/attenuates the signal of that specific frequency
band. Before you begin to alter the sound, all EQ controls should be set to their neutral position, i.e. their marker
points straight up (locked in place). Do not set the EQ controls to extreme positions. Usually, minor changes
are totally sufficient and produce the best results in the overall sound. You should use the natural reproduction
as an orientation mark and rely on your musically trained ear. The moderate use of the MID control is the best
remedy to avoid acoustical feedback. Especially in this frequency range you should try to avoid excessive
enhancement. Lowering the level more or less in this band will provide you with high amplification rates without
feedback.
The STEREO channels' EQ section is designed in a way that HI and LO controls provide a degree of control
that is equally adequate for LINE level inputs and microphones. The MID control is active in a comparably wide
frequency band around 2.4 kHz. Especially with microphone applications this range turned out to be critical, so
that slightly attenuating the mids offers excellent results.
+20
+15
+10
+5
+0
-5
-10
-15
-20
20 50 100 200
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500 1k 2k 5k 10k
Hz
INPUT STEREO
20k