Beyonwiz DP-S1 - Manual (Page 36)

Quick Setup
26
2) Audio Outputs
The DP-S1 supports 5.1ch audio in an analog format. It has Dolby
Digital decoder so that it can decode and output the Dolby sound
through the RCA connectors. It also supports digital outputs with optical
and coaxial ports.
z Audio Format: If you only have a stereo speaker system, you have to
set the audio format as 2ch. If you connect a 5.1ch speaker system
to the DP-S1, choose 5.1ch for the best performance. In order to
decode an audio source with an external audio decoder system, set
the audio format as pass-through.
z S/PDIF Output: Enables the digital audio output through the coaxial
and optical ports.
NOTE
z If you set the audio format as 2ch, the DP-S1 mixes down 5.1ch
audio source to 2ch audio.
z If the content of a channel broadcasted has 2ch audio source, the DP-
S1 can not expand the 2ch audio source to 5.1ch audio format.
Therefore, you can only hear sound from the front speakers even
though you have connected a 5.1ch speaker system and set the DP-
S1 as 5.1ch audio.
z Unless you set the audio format as 2ch when you connect stereo
speakers to DP-S1, you can not hear sound of 5.1ch source properly.
z
Because the DP-S1 support Dolby Digital stereo decoding, it mixes
down the 5.1ch audio source in the Dolby Digital format to 2ch audio
even though you set the audio format as 5.1ch.