Sony STR-DA9000ES Operating Instructions Manual page 18

Tip
To connect certain speakers to another power amplifier, use the PRE OUT jacks. The same signal is output from both
the SPEAKERS FRONT jacks and the PRE OUT jacks. For example, if you want to connect just the front speakers
to another amplifier, connect that amplifier to the PRE OUT FRONT L and R jacks.
Enjoying the 9.1 channel speaker system
What is the 9.1 channel speaker system?
A large dubbing theater for recording movie soundtracks uses 10 surround speakers. However, in a
small dubbing theater, only 2 speakers each are placed on the right, left, and back walls. Thus, the
minimum setup for a dubbing theater is 9.1 channels. When SPEAKERS SURROUND is set to A+B,
you can enjoy 9.1 channel speaker operation, just like a dubbing theater.
When using the CINEMA STUDIO EX modes with the 9.1 channel system, be sure to set Virtual
Speaker to OFF in SURR SET UP. (You can enjoy the surround effects of movies even without the use
of virtual speakers since so many real speakers are used.)
In addition, unlike virtual speakers, the expressive capability of real speakers will vary depending on
the speaker. Adjust the effect level so that the actor's lines sound natural and the impact of sound effects
is nicely balanced.
The advantage of a 9.1 channel speaker system is a drastic improvement in the connection between the
front (video) sound field and the surround sound field. Previously, we have employed virtual speaker
technology to present this sound effect, but a real 9.1 channel multi channel surround system has a
much wider effect area so that all family members can enjoy the surround effect. Of course, when
seated in the middle of the listening position, you can enjoy the sound exactly as the movie director
listened.
Tips for placing speakers
Place surround speakers B between the front speakers and the listening position. Adjusting the position of these
speakers improves the connection between the front and surround sound stage.
Tips for using the 9.1 channel speaker system
You can also use the CINEMA STUDIO EX modes with the 9.1 channel speaker system. In this case, the number of
virtual surround speakers doubles (for a total of 12 virtual surround speakers).
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Arrange the speakers around the center
of the room based on the angles shown in
the illustration on the left. If you are
unable to position the speakers according
to the angles shown, place one set of
surround speakers slightly forward of the
listening position (toward the front
speakers).
Although the center of the room is used
as an axis for determining speaker
placement, 9.1 channel speaker
operation covers an extremely wide
listening area which you can enjoy from
anywhere in the room behind the central
point.