"Richard Blackwood" wrote in message


Will all 5 speakers on a 5.1ch surround sound system be put to use no
matter the audio source e.g radio or cassette etc. or is it only if
the audio source is capable of 5.1ch sound e.g. DVD's?

Depends on the features on the surround system and how you prefer to use
them.

On many systems you could play the 5.1 as 5.1 and exploit all 6 speakers, in
accordance with the recording.

You could exploit all 5.1 speakers with stereo program material using Dolby
Pro Logic mode.

You can usually also have stereo program material as 2-channel stereo.