Pioneer SC-LX71, Руководство по эксплуатации

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Additional information
15
106
En
Chapter 15:
Additional information
Speaker Setting Guide
In o r de r to achieve an even bette r su rr ound effect, it is
im p o r tant to accu r ately p osition the s p eake r s and make
thei r volume and tone cha r acte r istics unifo r m so as to
finely focus the multi-channel sound.
The th r ee majo r elements in p ositioning the s p eake r s a r e
distance , angle and orientation (the di r ection in which
the s p eake r s a r e p ointing).
Distance : The distance of all the s p eake r s should be
equal.
Angle
: The s p eake r s should be p laced at the angles
shown in Fig. 1 and be ho r izontally symmet r ical.
Orientation : The o r ientation should be ho r izontally
symmet r ical.
In most homes, howeve r , it is not p ossible to achieve this
envi r onment. Fo r the distance, on this r eceive r it is
p ossible to automatically co rr ect the s p eake r distance
elect r ically to a pr ecision of 1 cm using the Auto MCACC
Setu p function ( p age 9). Fo r the volume and sound
quality as well, accu r ate sound field co rr ection using the
equalize r and s p eake r p hase cha r acte r istic co rr ection
using the Full Band Phase Cont r ol function ( p age 11)
togethe r make it p ossible to achieve the ideal listening
envi r onment.
He r e we conside r mainly the two elements of
angle
and
orientation
, based on the ITU-R r ecommended 5.1-
channel layout shown in Fig. 1.
Step 1: Speaker layout and distance adjustment
Adjust the main s p eake r s to the angles shown in Fig. 1.
Use s p eake r stands o r the like to make su r e the s p eake r s
a r e steady, and leave at least 10 cm f r om the su rr ounding
walls. Position the s p eake r s attentively so that the
s p eake r s on the left and r ight a r e at equal angles f r om the
listening p osition (cente r of the adjustments). (We
r ecommend using co r ds, etc., when adjusting the
layout.) Ideally all the s p eake r s should be equidistant
f r om the listening p osition.
Tip
• If the s p eake r s cannot be set at equal distances (on a
ci r cle), use the Auto MCACC Setu p s p eake r distance
co rr ection and Fine S p eake r Distance functions to
make them equalize the distance a r tificially.
Step 2: Adjusting the speaker height
Adjust the heights (angles) of the diffe r ent s p eake r s.
Adjust so that the f r ont s p eake r units r e pr oducing mid-
and high f r equencies is r oughly at the height of the ea r s.
If the cente r s p eake r cannot be set at the same height as
the f r ont s p eake r s, adjust its angle of elevation to p oint it
to the listening p osition.
Set su rr ound s p eake r 1 so that it is not unde r the height
of the ea r s.
Step 3: Adjusting the speaker orientation
If the left and r ight s p eake r s a r e not p ointing in the same
di r ection, the tone will not be the same on the r ight and
left, and as a r esult the sound field will not be r e pr oduced
pr o p e r ly. Howeve r , if all the s p eake r s a r e p ointed towa r ds
the listening p osition, the sound field will seem c r am p ed.
Testing by the Pionee r Multi-channel Resea r ch G r ou p
has shown that a good sense of sound p ositioning can be
achieved by p ointing all the s p eake r s towa r ds an a r ea
30 cm to 80 cm behind the listening p osition (between
the su rr ound s p eake r s and the listening p osition).
Howeve r , the sense of sound p ositioning can diffe r
acco r ding to the conditions in the r oom and the s p eake r s
being used. In smalle r envi r onments in p a r ticula r (when
the f r ont s p eake r s a r e close to the listening p osition),
with this method the s p eake r s will be p ointed too inwa r d.
We suggest you use this exam p le of installation as
r efe r ence when t r ying out diffe r ent installation methods.
Fig. 1
5.1-channel s p eake r layout r ecommended
by the ITU-R (ITU-R BS.775-1)
This ty p e of setu p is based on the r ecommendations
of the ITU-R (Inte r national Telecommunication Union
– Radiocommunication Secto r ), an inte r national
o r ganization s p ecialized in the field of elect r ic
communications.
Listening
p osition
60°
100°
to
120°
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