Often it is necessary to transfer a line level audio signal a long distance, for example from an ipod dock in a bedroom back to the central audio cabinet in the lounge which may be many metres away. 

Often in a retrofit situation there is no screened cable available but often a route may be established over the homes cat5 smart wiring system.

In this case an RCA to CAT5 balun can be used to convert the 75ohm signal into a 300ohm signal for transmission over a twisted pair cable.  It is also possible to utilise an IP network to transmit Audio signals, with the use of an IP Encoder, Audio and Video signals can be converted for transmission onto an IP network. 

With the use of a static IP the destination device can stream the signal from the source device over the network.  The Slingbox is an example of this technology where you can connect say your Satellite decoder at home and then view your favourite TV channels from any web connected PC. 

Baluns come in all shapes and sizes for transmitting different signals over different physical media. There are baluns for transmitting video over fibre, HDMI over CAT5, Audio over twisted pair, etc.

See www.smartwiring.net.nz for more information. 

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