Cambridge Audio 840A V2 user manual azur 840A, Balanced audio connections, English

Balanced audio connections

The diagram below shows how to connect the 840A V2 to the Azur 840C Upsampling CD player using the Balanced Audio inputs via three- pin XLR connectors. The 840A V2 can also be connected to non- Cambridge Audio sources with balanced outputs).

Note: The Input 1 switch must be in the ‘Balanced’ position.

840A V2

840C

Balanced connections in an audio system are designed to reject electrical noise, from power wiring etc, and also the effects of noise currents flowing through ground connections. The basic principle of balanced interconnection is to get the signal you want by subtraction, using a three-wire connection. One signal wire (the hot or in-phase) carries the normal signal, while other (the cold or phase-inverted) carries an inverted version. The balanced input senses the difference between the two lines to give the wanted signal. Any noise voltages that appear identically on both lines (these are called common-mode signals) are cancelled by the subtraction. An additional advantage is that the connection effectively carries twice the signal level and so improves the signal-to-noise ratio.

The 840A V2 and 840C are designed to work at their highest performance when a balanced interconnect is used.

azur 840A V2

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