7
Again, while Channel One’s housing is EMV-proof and protects against
HF-interference, placement of the unit is very important since it amplifies
microphone signals as well as other unwanted signals. Before connecting the
Channel One or any other equipment turn off all power. Adjust the voltage
setting on the back so that it corresponds with the power conditions.
The following graph shows the correct wiring for connecting unbalanced
signals to the balanced XLR connectors:
The Line/Instr. connector accepts unbalanced signals only. The output jack
connector accepts both balanced and unbalanced signals (use a mono jack
plug for connecting unbelanced signals). Please also refer to „Analog Outputs“
on page 8.
Mic connector
The Mic connector is used to plug in microphones of any type (dynamic,
condenser or tube microphones etc.). If 48 V phantom power is required for
some mics, switch on the 48 V b utton. For further information please read
“48V phantom power“ on page XXX.
Line/Instr. connector & switch
This connector is used to connect line and instruments signals. A switch
ensures to set the appropriate level and impedance values.
Usually, the switch can be set to INSTR. also for line signals, except they are
delivering very high levels - in this case, the switch should be set to LINE.
Analog outputs
The Analog Outputs deliver balanced output signals. Since both connectors
are working in parallel, unbalancing one connector also unbalances the other
one. If for example a mono jack plug is connected to the jack connector, the
XLR connector is switched to unbalanced operation as well.
General Advices
Connections
Connectors & Switches
Connections
ANALOG INPUTS
MIC
LINE/INSTR.
LINE
INSTR.
Unbal. only:
use mono jack
Input
Output
balanced
unbalanced
balanced
unbalanced
1= GND
2 = hot (+)
3 = cold (-)
1
2
3
1
2
3
1
2
3
1
2
3
ANALOG OUTPUTS
Balanced operation:
use TRS jack
Unbal. operation:
use mono jack
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