21OperationsAmbience effectsManufactured under license from Dolby Laboratories. "Dolby", "Pro Logic"and the double-D symbol are trademarks of Dolby Laboratories. Confiden-tial Unpublished Works. ©1992-1997 Dolby Laboratories. All rights re-served.This receiver is equipped with listening modes that allowyou to enjoy an enhanced sonic ambience with a variety ofvideo sources.In order to obtain the optimum effect from the surroundmodes, make sure to input the proper speaker settingsbeforehand. $Surround modesDolby Digital (AC-3)The Dolby Digital (AC-3) surround format lets you enjoy up to 5.1channels of digital surround sound from Dolby Digital (AC-3) programsources (such as Laserdisc or DVD software marked ). Com-pared with previous Dolby surround, Dolby Digital (AC-3) provides evenbetter sound quality, greater spatial accuracy, and improved dynamicrange.NoteAlthough a full set of speakers (front left, right, and center, surround leftand right, and a subwoofer) is required for true 5.1 channel Dolby Digital(AC-3) surround sound, this receiver lets you enjoy Dolby Digital (AC-3)(and Dolby Surround) program sources, even if you connect only thefront speakers. ("Speaker placement") #* LFE = Low Frequency Effects. This channel delivers separate non-directional bass signals to the subwoofer for more dynamic deep basssound effects.Although only Dolby Digital (AC-3) soundtracks incorporate a separatelow frequency channel, connecting a subwoofer will also improve deepbass performance in the other surround modes.The indication "LFE" appears in the display when a signal is being inputfor this channel.Front speaker (L, R)Subwoofer (LFE)*Center speakerSurround speakers (L, R)DTSThe DTS multi-channel audio format is available on CD, LD and DVDsoftware. DTS is a strictly digital format and can not be decoded insidemost CD, LD or DVD players. For this reason, if you attempt to listen toDTS encoded software through the analog output of your new CD, LDor DVD player, you will experience digital noise in most cases. This noisecan be quite loud if the analog output is connected directly to a highpower amplification system. Proper measures for playing the digitaloutput as described below should be taken to avoid this situation. Toenjoy DTS Digital Surround playback, an external 5.1 channel DTSDigital Surround decoder system or an amplifier with a built-in DTSDigital Surround decoder must be connected to the digital output (S/PDIF, AES/EBU or TosLink) of a CD, LD or DVD player.* Optional in this mode.* LFE = Low Frequency Effects. This channel delivers separate non-directional bass signals to the subwoofer for more dynamic deepbass sound effects.DTS has a .1 or LFE channel.The indication "LFE" appears in the display when a signal is beinginput for this channel.Front speaker (L, R)Subwoofer (LFE)*Center speakerSurround speakers (L, R)Dolby Pro Logic is a specially encoded 2 channel surround formatdesigned to provide theater-like surround sound from Dolby Surroundencoded sources (such as video and Laserdisc software marked). This receiver is equipped with a Dolby Pro Logicsurround decoder to let you enjoy the wide variety of currently availableDolby Surround home video software.Dolby Pro LogicManufactured under license from Digital TheaterSystems, Inc. US Pal. No. 5,451,942 and otherworldwide patents issues and pending.“DTS” and “DTS Digital Surround” are trademarks ofDigital Theater Systems, Inc.© 1996 Digital Theater Systems, Inc. All rights re-served.Front speaker (L, R)Subwoofer (SW)Center speakerSurround speakers (L, R)Continued to next page"Circle Surround and the symbol are trademarks of SRS Labs,Inc. in the United States and selected foreign countries. Circle Surroundtechnology is incorporated under license from SRS Labs, Inc".