Denon AVR-2803/983 Change of positioning and acoustic image, With 6.1-channel Stems, SB to SL

A 6.1-channel system is a conventional 5.1-channel system to which the "surround back" (SB) channel has been added. This makes it easy to achieve sound positioned directly behind the listener, something that was previously difficult with sources designed for conventional multi surround speakers. In addition, the acoustic image extending between the sides and the rear is narrowed, thus greatly improving the expression of the surround signals for sounds moving from the sides to the back and from the front to the point directly behind the listening position.

Change of positioning and acoustic image		Change of positioning and acoustic image
with 5,1-channel	systems	with 6.1-channel.,	stems
Fq r_ r_q	D	D_D	D

			"				"
			/i SLch	I OC_CCCO:		O	SRch)
O__
			\_			\	//
			\				//
D D c_llD		D D		D [_ D	D D	D
SLch /	_	SRch		SB ch
Movement of acoustic	image from SR to SL		Movement	of acoustic	image from	SR to	SB to SL

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. The WIDE

SCREEN

mode

is

a mode

for achieving

surround

sound

with

up

to

7.1

channels

using

surround

back

speakers,

for

sources recorded in

conventional

Dolby

Surround

as well

as Dolby

Digital 5.1 channel

and

DTS

Surround

5.1-channel sources.

Furthermore,

all the Denon original

surround

modes

(see page 55) are

compatible

with

7.1-channel

playback,

so you can

enjoy

7.1 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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