Trident 78
Owners Manual
6
Trident 78
Input Channel Group Assignment
Trident 78
Input Channel Mic/Line Options
+48V
When depressed , pr48
Volt phantom power to the bal-
anced MIC inputs on the associ-
ated pins on the DSUB connec-
tor. Phantom power is required
for operation of many condenser
microphones. See your micro-
phone instructions to see if phan-
tom power is required or is to
be defeated (some - though few
– microphones require phantom
power NOT to be activated or
they may be damaged).
Line
Selects between the Channel Mic
preamp signal (UP) or the signal
appearing on the DSUB (Down).
POL
When depressed, reverses the
electrical input polarity of any
microphone or line level input
signal selected as the channel
source. Use of this control may
alter the sound quality of a in-
put relative to other channels
when multiple microphones are
picking up the same sound.
INPUT GAIN
This control adjusts the amount
of gain of the signal connected
to the associated MIC input on
the DSUB connector. For low
impedance balanced microphone
plugged into the Channel the
gain varies from +5dB min to
approxi60dB. With the
Line switch depressed, this then
controls the gain of the signal
appearing on the associated
line inputs of the DSUB con-
nector, this gain varies between
-20dB and +35dB.
CHAN MTR
This button selects the signal that is
fed to the relevant channel meter sit-
uated on the meter bridge. In the up
position the Channel Direct Output
feed is displayed.
[The Channel Direct Output can be
user defined by a selectable option
on the Input module, it can be selected
either Channel post fader or Channel
Insert Return (signal appearing on as-
sociated Channel Insert Return.
When this button is depressed the
channel meter is fed from the signal
on the associated Channel MONITOR
Input.
In a multi-track studio environment
where the Channel Direct Output is
fed to the recording device and the
output of this device is connected to
the MONITOR I/P, it is possible to see
on the Channel meter what is sent to
or received from the recording device.
I/P REV
The Input Reverse switch when de-
pressed flips the Line Input signal and
the Monitor Input signals. In effect
this switch determines the Line input
source that is available to the channel.
Combining this with the Line Switch
above allows the user to source the
channel signal from the associated
channel Monitor Return pins of the
DSUB connector and to use the full
channel strip resources for the Monitor
return signal. Alternatively depressing
this switch selects the associated Line
Input source for the channel Monitor
section.
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