Crest Audio CENTURY LM, Руководство пользователя, Страница: 34 / 38

LM
A
PPENDIX
B
C
ENTURY
S
ERIES
Glossary
Balanced Insert Return
See Insert Return
Balanced Line In
See Line Input
Balanced Mic In
See Microphone Input
Balanced Mic Out
See Microphone Output
Balanced Out
See Outputs
DIM Switch
Introduces a -6dB drop to the output signal. This is a push
on/push off switch allows the operator to temporarily drop the
level of a monitor without actually changing any settings.
Direct Out
This jack carries the direct output signal (post fader & post
mute) from each input channel. This signal can be used for
connection to recording devices or routing of the post fader
signal.
EQ IN Switch
Inserts the EQ section into the input/output channel signal. An
associated LED illuminates when the switch is down.
Equalizer Controls (Input)
There are two knobs for each of the four bands. The inner knob
controls the boost or cut; while the outer knob controls the cen-
ter frequency adjusted by the inner knob. These center frequen-
cies are printed on the chassis around the outer knob. This EQ
is active only when the EQ In switch is depressed.
Equalizer Controls (Output)
Controls the equalization of the output mix signal through
three bands, via six controls. The upper knob of each band
determines the center frequency (high-1kHz-20kHz, mid-
300Hz-8kHz, low-40Hz, 1kHz), while the lower knob adjusts
the amount of boost or cut.
External Talkback Input
In addition to the mic connections on the console surface, an
additional Talkback input connection is provided on the rear of
the master section. Signal connected to this jack appears on the
Talkback bus whenever the External TB Input switch is
depressed.
External Talkback Output
This allows the internal TB signals present on the Talkback
bus to be routed to an external destination such as a link to the
FOH console. Signal appears on this jack when both the
External TB Output switch and talkback master switches are
depressed.
Fader
Used for final output control of an input/output channel except
those sends selected pre fader. (Insert Output levels are not
affected by the fader position.)
Gain Control
Adjusts input gain for proper signal level on the input. To set
the gain to the best position, make sure there is signal present
at the input. Depress the PFL switch on that input channel and
make sure that no other PFL switches are depressed. Adjust the
gain control until the PFL meter (on output module 12) is
peaking around the +3 level.
Group Mix Switch
This switch activates circuitry that sums all output mixes and
assigns the summed signal to the Monitor B output. This out-
put is stereo when stereo signals are present. This signal is post
fader.
Headphone Jack
Allows for connection of headphones via a 1/4" TRS plug.
There are two headphone jacks: one on master module B, and
one underneath the armrest on the right front corner of the con-
sole.
Headphone Level Control
Controls the output level of both headphone jacks.
High Pass Filter Switch
This switch inserts the High Pass Filter into the output signal.
Unlike the 100Hz HPF on the inputs, the output HPF is
adjustable via the HPF frequency control.
HPF Frequency Control
This knob adjusts the high pass filter frequency from 20Hz to
400Hz. The filter operates at a -12 dB per octave rate.
100 Hz High Pass Filter (Input)
Reduces all Input signal low frequency content at a 12db per
octave rate referenced to 100Hz (-3db point).
Insert
All LM inputs and outputs have insert loops which facilitate
the patching of external processing equipment into the input or
output signal. All LM inserts are pre EQ.
On the inputs, signal is always present at the Insert Send con-
nection and the loop is complete when the proper connector is
plugged into the Insert Return. The Insert Return can also be
used as a line input when by-passing the preamp is desired.
On the outputs, the loop is controlled by the Insert On switch.
Depressing this switch inserts the loop into the output signal.
Since this a true insert, if an incomplete loop exists, depressing
the switch will mute the output.
Input/Output PFL Indicators
These LEDs indicate what type of signal (input or output) is
PFL’d at any given time.