Sherwood BDP-5004 - Manual (Page 14)

5.3.2 Digital Output:
If you only have two speakers, set PCM stereo.
If you connect receiver with more than two speakers, please refer to below tables:
5.3.3 Dynamic Range Control: means that you can allow the BD player to make the loud
parts of amovie's audio track quieter than they would be in the theatre, without
making the dialog of theactors any quieter. (It effects on analog audio output and
digital output should be set to PCM or Bitstream Mixed).
5.3 Audio
5.3.1 PCM Downsampling: select right bitrate for PCM signal to ensure your SPDIF
receiver can handle it correctly. It's no effect for HDMI digital audio output.
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Bitstream
mixed
Bitstream
mixed
Bitstream mixed
Set to Bitstream
HD for disks with
DTS-HD
soundtracks. Set to Bitstream
HD for disks with
Dolby TrueHD
soundtracks.