CONNECTIONS: INPUTS- Using the Terminal Block Inputs

Each channel has an active balanced "Euro-style" terminal block input jack. These terminal blocks allow the input wiring to be terminated using simple hand tools and allows for quick reconfiguration when needed. The input impedance is 20k ohm balanced or 10k ohm unbalanced.

Balanced connection is recommended for all audio inputs. Balanced signals are less prone to AC hum and other electrical noise. Unbalanced signals can be suitable for short cable runs. The signal source's output impedance should be less than 600 ohms to avoid high frequency loss in long cables.

If the DataPort is being used for the input signal source, the terminal block connections should not be used for inputs. However, they may be used for daisy chaining the DataPort input signal to other channels or amplifiers. The signal available from the terminal block input connections will be about 10 dB lower than the signal presented to the DataPort.

TERMINAL BLOCK

CONNECTORS

Terminal Block Connectors:

Balanced inputs: Connect the conductors to the connector as shown.

Unbalanced inputs: Connect the conductors to the connector as shown. Make sure that the unused side of the balanced input is connected to ground, as shown.

shield

Terminal block: balanced connections

jumper

shield

Terminal block: unbalanced connections

12

Page 12
Image 12
QSC Audio CX168 user manual Connections INPUTS- Using the Terminal Block Inputs