105Dolby Digital CompMENU m → Sound → Dolby Digital Comp → ENTER ESoundDolby Digital Comp RF- The displayed image may differ depending on the model.Set Dolby Digital Compression mode.• Line / RF― Model DB10E-T is only supported.Speaker SettingsMENU m → Sound → Speaker Settings → ENTER ESoundSpeaker Settings- The displayed image may differ depending on the model.Sound OutputIf you are listening to the sound track of a broadcast or movie through an external receiver, you may hear a sound echo causedby the difference in decoding speed between the products speakers and the speakers attached to your audio receiver. If thisoccurs, set the product to External.― DB10E-T: External / Internal / Receiver― DB10E-POE/DB10E-TPOE: External / Receiver― When you set Speaker Settings to External, the products speakers are turned off.You will hear sound through the external speakers only. When the Speaker Settings is set to Internal, both the productspeakers and the external speakers are on. You will hear sound through both.― If there is no video signal, both the products speakers and the external speakers will be mute.