NeoDigits.com X3000 HD - Manual (Page 15)

Connect the video output of the player to the video input of your TV system using the
corresponding cable.
Use the fiber optic or coaxial cable to connect the player output to the AV receiver digital
input.
C. Connecting to a 5.1 channel amplifier
Connect the video output of the player to the video input of your TV system using the
corresponding cable.
Connect the 5.1 audio output terminals of the player to the amplifier using the respective
connections (L and R of mixed FRONT, L and R of SURROUND, CENTER and
SUBWOOFER).
Ensure that all 6 speakers are connected to the corresponding outputs of the amplifier.