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Yamaha DSP-A1 Owner's Manual: Speaker Setup

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Setting Up Your Speaker System
This unit has been designed to provide the best sound field
quality with a full seven-speaker system setup, using a pair of
main speakers to output main source sounds, two extra pairs
of effect speakers to generate the sound field plus one center
speaker for dialog. We therefore recommend that you use a
seven-speaker setup. A four-speaker system using only one
pair of effect speakers for the sound field will still provide
impressive ambience and effects, however, and may be a
good way to begin with this unit. You can always upgrade to
the full seven-speaker system later. In the 4 or 5 speaker
system, the Digital Sound Field Processing is still performed,
but the main speakers are used for both the main channels
and the front effect channels.
Use of the Center Dialog Speaker Is
When playing back a source with the Dolby Pro Logic
decoded, or playing back a source which contains center-
channel signals with the Dolby Digital (AC-3) or the DTS
decoded, dialog, vocals etc. are output from the center
channel. Therefore, if you want to maximize the performance
of your Audio/Video home theater system, it is recommended
that you use a center channel speaker.
Speakers and Speaker Placement
Your full seven-speaker system will require three speaker
pairs: the MAIN SPEAKERS (your normal stereo speakers),
plus the CENTER SPEAKER. You may also be using a
The MAIN SPEAKERS should be high performance models
and have enough power handling capacity to accept the
maximum output of your audio system.
Other speakers do not have to be equal to the MAIN
SPEAKERS. For precise sound localization, however, it is
ideal to use high performance models that can reproduce
sounds in full range for the CENTER SPEAKER, the FRONT
Place the MAIN SPEAKERS in the normal position.
Place the FRONT EFFECT SPEAKERS further apart than the
MAIN SPEAKERS, on either side of and 0.5–1m behind and
above the MAIN SPEAKER pair.
Place the REAR SPEAKERS behind your listening position.
They should be nearly 1.8m up from the floor.
Place the CENTER SPEAKER precisely between the two
MAIN SPEAKERS. (To avoid interference, keep the speaker
above or below the television monitor, or use a magnetically
shielded speaker.)
If using a SUBWOOFER, such as a Yamaha Active Servo
Subwoofer System, the position of the speaker is not so critical
because low bass tones are not highly directional.


If for some reason it is not practical to use a center speaker, it
is possible to enjoy movie viewing without it. Best results,
however, are obtained with the full system.
Use of a Subwoofer Expands Your Sound
It is also possible to further expand your system with the
addition of a subwoofer and amplifier. The use of a subwoofer
is effective not only for reinforcing bass frequencies from any
or all channels, but also for reproducing signals at the
subwoofer channel with high fidelity during playing back a
source with the Dolby Digital (AC-3) or the DTS decoded. You
may wish to choose the convenience of a Yamaha Active
Servo Processing Subwoofer System, which has its own built-
in power amplifier.
Front effect speaker
Main speaker
Rear speaker
Center speaker


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