18Using PowerTouchHow Do I Adjust the Surround Modes?What are Listen Modes?• Dolby Digital: Dolby Digital uses an encode/decode process basedon its theatrical digital surround sound technology. The five mainchannels are full-frequency and independent, so sound can completelyenvelop you or soar anywhere in the room, just like at the movies.Compared with Dolby Pro Logic, Dolby Digital has more clarity,greater surround envelopment, and more realistic sound movementbetween channels.Although a full set of speakers (front left and right, center, surroundleft and right, and a subwoofer) is required for true Dolby Digitalsurround sound, this receiver lets you enjoy Dolby Digital programsources, even if you connect fewer speakers.• Dolby Pro Logic/Dolby Pro Logic II: Dolby Pro Logic reproduces asurround sound like in a movie theater from Dolby Surround-encodedprogram source (videotape or LaserDisc software carrying the DolbySurround logo), and features excellent sound movement on the frontand a surrounding atmosphere of movie theaters. Meanwhile, DolbyPro Logic II decodes a signal encoded in 2 channels into 5-channelsignals composed of the left/right front signals, center signal and sur-round left/right signals. If no surround speaker is Setup, the surroundsignal is sent to front left and right speakers. (Dolby 3 stereo)Dolby Pro Logic II is an advanced version of the decoding technologyused with Dolby Pro Logic. It inputs 2-channel signals from a Dolby•Movies that were created using the Dolby Digital Surround EX tech-nology, when released into the home consumer market may exhibit aDolby Digital Surround EX logo on the packaging. A list of moviescreated using this technology can be found on the Dolby web site athttp://www.dolby.com.Only receiver and controller products bearing the THX Surround EXlogo, when in the THX Surround EX mode, faithfully reproduce thisnew technology in the home.This product may also engage the "THX Surround EX" mode duringthe playback of 5.1 channel material that is not Dolby Digital Sur-round EX encoded. In such case the information delivered to the Sur-round Back channel will be program dependent and may or may notbe very pleasing depending on the particular soundtrack and the tastesof the individual listener.
