dolby surround is an earlier surround sound standard that is decoded with a pro logic processor. the pro logic steering circuitry derives separate center and rear channels from encoded stereo program sources.

    pro logic processing provides a convincing movie soundfield when the material is specifically encoded for dolby surround. most older stereo movie soundtracks will only be encoded for dolby surround, even though the program source may be a dvd’s digital output. most dvds containing dolby surround program material will cause both the dolby digital and dolby pro logic lights to illuminate. creative inspire 5.1 digital 5700 will decode these digitally transferred dolby surround programs through the digital pro logic decoder automatically.

    cd-roms and cds with dolby surround encoding will feature the dolby surround logo at the beginning of the program or on the packaging.

    if you are using an analog input, select line in. then select pro logic processing using the dolby pro logic on/off button. when dolby pro logic is selected, cmss is turned off. to turn on cmss again, turn off dolby pro logic first.

    if using digital din, optical or coaxial input, ensure that the corresponding digital input is selected. then select pro logic processing using the dolby pro logic on/off button. when dolby pro logic is selected, cmss is turned off. to turn on cmss again, turn off dolby pro logic first.

    do not select a pro logic decoding mode if the program material is not encoded for dolby surround.

    excessive center channel output will result, and most of the stereo effect will be lost. use cmss movie or music modes to upmix stereo programs to a realistic 5.1-channel soundfield.