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49
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) Basic setting
Use this setting if your main purpose is to listen to movie music and when using one set (two speakers) of regular single-way or two-way
speakers as the surround speakers.
• 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.
Front speakers
Monitor
Center speaker
Subwoofer
45°
120°
Surround speakers
As seen from above
As seen from the side
Surround speaker
Front speaker
60 to 90 cm
(2) 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.
• Set the front speakers, center speaker and subwoofer in the
same positions as in example (1).
• Set the surround speakers directly at the sides of the listening
position and 60 to 90 centimeters (2 to 3 feet) above ear level.
• The signals from the surround channels reflect off the walls as
shown on the diagram at the left, creating an enveloping and
realistic surround sound presentation.
As seen from the side
Surround speaker
Front speaker
60 to 90 cm
Path of the surround sound from the
speakers to the listening position
As seen from above
16
ADDITIONAL INFORMATION
Surround
The AVR-2801/981 is equipped with a digital signal processing circuit that lets you play program sources in the surround mode to achieve the same
sense of presence as in a movie theater.
Dolby Surround
(1) Dolby Digital (Dolby Surround AC-3)
Dolby Digital is the multi-channel digital signal format developed by Dolby Laboratories.
Dolby Digital consists of up to “5.1” channels - front left, front right, center, surround left, surround right, and an additional channel exclusively
reserved for additional deep bass sound effects (the Low Frequency Effects – LFE – channel, also called the “.1” channel, containing bass
frequencies of up to 120 Hz).
Unlike the analog Dolby Pro Logic format, Dolby Digital’s main channels can all contain full range sound information, from the lowest bass, up
to the highest frequencies – 22 kHz. The signals within each channel are distinct from the others, allowing pinpoint sound imaging, and Dolby
Digital offers tremendous dynamic range from the most powerful sound effects to the quietest, softest sounds, free from noise and distortion.