Cambridge Audio 551R user manual DSPmodes, Stereo/Stereo+Sub, Othermodes AnalogueStereoDirect

Surroundsoundmodescont.

ADTStechnologywhichisabletorecreate6channel(LeftFront,RightFront, Centre,LeftSurround,RightSurround,SurroundBack)surroundsoundfrom suitable analogue matrix encoded stereo source material. DTS Neo:6 material can be played back by normal Stereo equipment (as Stereo) or decoded into 7.1 by sending the Surround Back decode to the both the SurroundBackLeftandRightspeakers(formingtwomonoBackSurrounds).

Note: Neo:6 does not include a Low Frequency Effects channel for the Subwoofer, but the 551R can create a Subwoofer output via Bass management. Refer to the ‘Tone/Sub/LFE configuration’ section in the ‘Operatinginstructions’partofthismanual.

A DTS technology that provides 5.1 channels of 96kHz / 24bit audio (along withvideoifrequired)onDVD-VideoandDVD-Audio(videozone)discs(when suitably encoded in DTS 96/24). DVD players which allow 'DTS digital out' pass the DTS 96/24 bitstream over S/P DIF or HDMI for decoding in the 551R.

DSPmodes

These modes allow a surround-sound experience from source material that has no encoding at all. The surround sound effect is achieved by Digital SignalProcessingoftheAnalogueorDigitalstereosourceused.Fivemodes arepossible:Movie,Music,Room,TheatreandHall.

Stereo/Stereo+Sub

OnlytheFrontLeftandFrontRightspeakers(andsubwooferifselected)have outputinthismode.Ifananaloguesourceisselecteditwillbeconvertedto digital via 24 bit A/D converters to allow digital domain sub creation and bass/treblecontrols.

Ifadigitalsourceisselectedthe551RwillbeprocessingeitherLPCMstereo (fromthedigitaloutputsofaCDplayerforinstance)oraStereodownmixof DDorDTSmaterial(fromthedigitaloutputofaDVDplayerforinstance).

Othermodes

AnalogueStereoDirect

Selects the analogue inputs for the current source directly with no A/D conversion, DSP processing, Bass/Treble or subwoofer channel active. Provides the very best fidelity for analogue Hi-Fi source equipment. In this modethe551RisactingjustlikeanormalHi-Fiintegratedamplifier.

MultiChannelPCM

Some playback devices (in particular Blu-ray players) are able to decode some of the above formats themselves internally and then output the decodedaudioasMultiChannelPCMtothe551R.InadditionBlu-raydisks can support native unencoded Multi Channel PCM soundtracks (of up to 8 channels)onthediscitself.Ineithercaseifyourplayercanoutputtheseover HDMIthe551RisabletoreceivetheminMulti-ChannelPCMmode.

Operatinginstructions

To activate the 551R, switch the Power button on the rear panel toOnthen presstheStandby/Onbuttononthefrontpanel.

Selectingthesource

1.Selectthedesiredsourcebypushingthecorrespondingsourcebuttonon thefrontpanelorremotecontrol.

2.Ifnecessary,presstheAudioInputTypebuttontoselecttheinputmodeof thesourceequipment,eitheranalogue,digitalorHDMI(dependingonthe connection made on the rear panel). You may have already assigned this inthe‘AudioIn/OutSetupMenu’intheOSD.

The digital, analogue or HDMI icons on the display show which is the currentlyselectedinputtype.

Note: The 551R stores the input type for each source so that it is automaticallyrecalledwhenthatsourceisselectedagain.

Selectingthedesiredlisteningmode

Selectanappropriatemodeforthesourcematerial/typeyouarelisteningto by pressing the Stereo or Surround Modes button and cycling through sub- modeswhereavailable.

Inallcasesthefirsttimeamodebuttonispressedthe551Rwillreportthe currentdecodingmodeonthefrontpaneldisplay.Pressingthebuttonagain will then cycle to the next available mode (if there is one). If no button is pressed for 4 or 5 seconds the 551R returns to normal operation without changingmode.

Stereo Modes - Selects 2 channel Stereo operation for stereo material, pressingagainselectsStereo+Submode.

This is a digitally processed mode that allows bass and treble controls, and sub generation if required. The input can be either analogue (in which case itwillbeturnedintodigitalby24bitA/Dconversion)ornativelydigital.

Surround Modes - Selects a range of digital surround modes for the appropriatelydigitallyencodedmaterial

Note: Some Surround Sound types (such as the Dolby and DTS HD) are availableonlyfromBlu-raydiscoverHDMI.

Pressing the Surround Modes button will cause the 551R to lock onto the incoming bitstream and select the first available mode for the current bitstreamtype.

In some circumstances (see tables) pressing the button again will switch to analternativedecodingoption.

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