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Before connecting the speakers, place them correctly by consulting
the instruction manuals that came with them.
For surround playback, the configuration and placement of your
speakers are very important.
For THX surround EX playback, we recommend that you use a
THX speaker system that is certified by Lucasfilm Ltd.
Ideal speaker configuration
• Front right and left speakers
• Center speaker
Produces a rich sound image by serving as a sound source for
the front right and left speakers and enhancing the sonic
movement.
• Surround right and left speakers
Adds three-dimensional sonic movement and produces
environmental sound associated with the background and effect
sound for each scene.
• Surround back speaker
Required for enjoying THX Surround EX, DTS-ES Matrix 6.1,
or DTS-ES Discrete 6.1 audio. For audio using surround back
right and surround back left speakers, a separately-sold 2-
channel power amplifier is required.
Lucasfilm/THX recommends the use of two Surround Back
speakers to enjoy the full potential of THX Surround EX. An
external stereo power amplifier will need to be used to power
the two speakers from the Pre-Amp out terminals.
However, if you are unable to position two speakers in your
listening environment, a single surround speaker can be used
and the TX-DS797 has an internal amplifier to power this
speaker for your convenience.
• Subwoofer
Produces powerful and heavy bass.
Minimum speaker configuration for surround
sound playback
• Front right and left speakers
• Surround right and left speakers
The sound recorded for the center speaker and the subwoofer will be
properly distributed to the front right and left speakers for optimized
surround playback.
Speaker placement
Ideal speaker placement varies depending on the size of your room
and the wall coverings. Here, only typical example of speaker
placement and recommendations are shown.
In order to create the optimum conditions for the best sound quality,
be sure to place all the speakers so that the greatest difference
between the distances of each speaker to the listening position is
less than 20 feet (6 meters).
Important points regarding speaker placement
Front left and right speakers and center speaker
• Place these three speakers at the same height from the floor.
• Place each speaker so that sound is aimed at the location of the
listener’s ears when at the listening position.
Surround left and right speakers
• Place these speakers so that their height is 3 feet (1 meter)
higher than that of the listener’s ears.
Most dipoles have an arrow on them to indicate their orientation
towards the screen. So for the side dipoles, the arrows point forward.
For the back dipoles, the arrows should point towards each other to
achieve the correct acoustical phasing in the room.
Connecting speakers
1 TV or screen
2 Front left speaker
3 Subwoofer
4 Center speaker
5 Front right speaker
6 Surround left speaker
7 Surround right speaker
Subwoofer
A subwoofer is recommended for the highest bass effect.
Surround back speaker/Surround back left and right speakers
• Place these speakers behind the listener so that the angle
between each speaker and the listener is approximately 15
degrees.
• Place these speakers so that their height is 3 feet (1 meter)
higher than that of the listener’s ears.
Note:
For audio using surround back right and surround back left
speakers, a separately-sold 2-channel power amplifier is required.
(Only one surround back
speaker)
(Two surround back
speakers)
(Only one surround back speaker)
(Two surround back speakers)
2
34
5
6
7
10
1
2
34
5
10
1
67
8 9
89
10
8 9
10
8
15˚15˚
Layout with dipolar
speakers
Layout with monopolar
speakers
2
34
5
6
7
10
1
8
8 Surround back left
speaker or Surround back
speaker (only one
surrround back speaker)
9 Surround back right
speaker
10 Listening position