Denon AVR-3806 User Manual download pdf (Page 93)

Additional Information Additional Information

2 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.

2 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.

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 ( page 39) are compatible with 7.1-channel

playback, so you can enjoy 7.1-channel sound with any signal

source.

Speaker setting examples

Here we describe a number of speaker settings for different

purposes. Use these examples as guides to set up your system

according to the type of speakers used and the main usage

purpose.

[1] DTS-ES compatible system (using surround back

speakers)

q Basic setting for primarily watching movies

This is recommended when mainly playing movies and using

regular single way or 2-way speakers for the surround speakers.

Setting for primarily watching movies using

diffusion type speakers for the surround speakers

For the greatest sense of surround sound envelopment, diffuse

radiation speakers such as bipolar types, or dipolar types, provide

a wider dispersion than is possible to obtain from a direct

radiating speaker (monopolar). Place these speakers at either

side of the prime listening position, mounted above ear level.

Subwoofer

Surround back speakers

Front speakers

60°

Monitor

Center speaker

[ As seen from above ]

Surround

speakers

Surround speaker

Front speaker

60 to 90 cm

[ As seen from the side ]

Surround back

speaker

Point slightly

downwards

• Set the front speakers with their front surfaces as flush with

the TV or monitor screen as possible. Set the center speaker

between the front left and right speakers and no further from

the listening position than the front speakers.

• Consult the owner’s manual for your subwoofer for advice on

placing the subwoofer within the listening room.

• If the surround speakers are direct-radiating (monopolar) then

place them slightly behind and at an angle to the listening

position and parallel to the walls at a position 60 to 90

centimeters (2 to 3 feet) above ear level at the prime listening

position.

• When using two surround back speakers, place them at the

back facing the front at a narrower distance than the front left

and right speakers. When using one surround back speaker,

place it at the rear center facing the front at a slightly higher

position (0 to 20 cm) than the surround speakers.

• We recommend installing the surround back speaker(s) at a

slightly downward facing angle. This effectively prevents the

surround back channel signals from reflecting off the monitor or

screen at the front center, resulting in interference and making

the sense of movement from the front to the back less sharp.

• Connect the surround speakers to the surround speaker A

terminals on the AVR-3806 and set all settings on the setup

menu to “A”. (This is the factory default setting ( page 79)).

Surround back speakers

[ As seen from above ]

Surround

speaker

Front speaker

60 to 90 cm

[ As seen from the side ]

Surround

back speaker

Point slightly

downwards

Path of the surround sound from the

speakers to the listening position

60°

Surround

speakers

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Denon AVR-3806 User Manual Page 93

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