SPL 9945, User Manual

Page: 7 / 28

7
Connections
General Advises
Connections
Connectors
Again, while Channel One’s housing is EMV-proof and protects against HF-
interference, placement of the unit is very important since it amplifies micro-
phone 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:
Unbalanced signals with mono jack plugs may easily be connected to the
balanced jack connectors without level differences (see “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 button. For further information please read
“48 V-phantom power“ on page 9.
Line connector
The balanced Line connector serves to connect line level equipment. It is
recommended to route the Line input to a patchbay. This allows easy and
fast selection of various line signal sources.
Insert connectors
The balanced Insert connectors (Send and Return) are used to integrate
further units into the signal path of the Channel One. The Send connector is
placed behind the De-Esser, the Return connector is located in front of the
Compressor/Limiter. This also allows to record the pre-amplifier signal via
the Send connector while another input signal can be fed into the Channel
One’s Compressor/Limiter/EQ sections for further processing.