A6.1-channelsystemisaconventional5.1-channelsystemtowhichthe"surroundback"(SB)channelhasbeenadded.Thismakesiteasyto
achievesoundpositioneddirectlybehindthelistener,somethingthatwaspreviouslydifficultwithsourcesdesignedforconventionalmulti
surroundspeakers.Inaddition,theacousticimageextendingbetweenthesidesandtherearisnarrowed,thusgreatlyimprovingtheexpression
ofthesurroundsignalsforsoundsmovingfromthesidestothebackandfromthefronttothepointdirectlybehindthelisteningposition.
Change of positioning and acoustic image
with 5,1-channel systems
DF_D D
O__
D D c_llD D D
SLch / _ SRch
Movement of acoustic image from SR to SL
Change of positioning and acoustic image
with 6.1*channel., stems
[E]_D D
" "
/ O SRch)i SLch I OC_CCCO:_
\_ \ //
\ //
D D D D D D
SB ch
Movement of acoustic image from SR to SB to St,
With this set, speaker(s) for 1 or 2 channels are required to achieve a 6.1=channel system (DTS-ES, etc.). Adding these speakers, however,
increases the surround effect not only with sources recorded in 6.1 channels but also with conventional 2- to 5.1-channel sources. All the Denon
original surround modes {see page 47) are compatible with 7.1-channel playback, so you can enjoy 6.1-channel sound with any signal source.
• Number of surround back speakers
Though the surround back channel only consists of 1 channel of playback signals for 6.1-channel sources (DTS-ES, etc.), we recommend using
two speakers. When using speakers with dipolar characteristics in particular, it is essential to use two speakers.
Using two speakers results in a smoother blend with the sound of the surround channels and better sound positioning of the surround back
channel when listening from a position other than the center.
• Placement of the surround left and right channels when using surround back speakers
Using surround back speakers greatly improves the positioning of the sound at the rear. Because of this, the surround left and right channels
play an important role in achieving a smooth transition of the acoustic image from the front to the back. As shown on the diagram above, in a
movie theater the surround signals are also produced from diagonally in front of the listeners, creating an acoustic image as if the sound were
floating in space.
To achieve these effects, we recommend placing the speakers for the surround left and right channels slightly more towards the front than
with conventional surround systems. Doing so sometimes increases the surround effect when playing conventional 5.1-channel sources in the
6.1 surround or DTS-ES Matrix 6.1 mode. Check the surround effects of the various modes before selecting the surround mode.
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