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Additional information
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Chapter 12:
Additional information
Speaker Setting Guide
In order to achieve an even better surround effect, it is 
important to accurately position the speakers and make 
their volume and tone characteristics uniform so as to 
finely focus the multi-channel sound.
The three major elements in positioning the speakers are 
distanceangle and orientation (the direction in which 
the speakers are pointing).
Distance: The distance of all the speakers should be 
equal.
Angle: The speakers should be horizontally symmetrical.
Orientation: The orientation should be horizontally 
symmetrical.
In most homes, however, it is not possible to achieve this 
environment. For the distance, on this receiver it is 
possible to automatically correct the speaker distance 
electrically to a precision of 
1
/
2
 inch using the Auto 
MCACC Setup function (page 37).
Step 1: Speaker layout and distance adjustment
Use speaker stands or the like to make sure the speakers 
are steady, and leave at least 10 cm (4 inches) from the 
surrounding walls. Position the speakers attentively so 
that the speakers on the left and right are at equal angles 
from the listening position (center of the adjustments). 
(We recommend using cords, etc., when adjusting the 
layout.) Ideally all the speakers should be equidistant 
from the listening position.
 Tip
• If  the  speakers cannot be set at equal distances (on a 
circle), use the Auto MCACC Setup speaker distance 
correction and Fine Speaker Distance functions to 
make them equalize the distance artificially.
Step 2: Adjusting the speaker height
Adjust the heights (angles) of the different speakers.
Adjust so that the front speaker units reproducing mid- 
and high frequencies is roughly at the height of the ears.
If the center speaker cannot be set at the same height as 
the front speakers, adjust its angle of elevation to point it 
to the listening position.
Set surround speaker 1 so that it is not under the height 
of the ears.
Step 3: Adjusting the speaker orientation
If the left and right speakers are not pointing in the same 
direction, the tone will not be the same on the right and 
left, and as a result the sound field will not be reproduced 
properly. However, if all the speakers are pointed towards 
the listening position, the sound field will seem cramped. 
Testing by the Pioneer Multi-channel Research Group 
has shown that a good sense of sound positioning can be 
achieved by pointing all the speakers towards an area 
30 cm to 80 cm (12 inches to 31 inches) behind the 
listening position (between the surround speakers and 
the listening position).
However, the sense of sound positioning can differ 
according to the conditions in the room and the speakers 
being used. In smaller environments in particular (when 
the front speakers are close to the listening position), 
with this method the speakers will be pointed too inward. 
We suggest you use this example of installation as 
reference when trying out different installation methods.
Step 4: Positioning and adjusting the subwoofer
Placing the subwoofer between the center and front 
speakers makes even music sources sound more natural 
(if there is only one subwoofer, it doesn’t matter if it is 
placed on the left or right side). The low bass sound 
output from the subwoofer is not directional and there is 
no need to adjust the height. Normally the subwoofer is 
placed on the floor. Put it in a position at which it will not 
cancel out the bass sound output from the other 
speakers. Also note that placing it near a wall may result 
in sympathetic vibrations with the building that could 
excessively amplify the bass sound.
If the subwoofer must be installed near a wall, place it at 
an angle so that it is not parallel to the wall surface. This 
can help reduce any sympathetic vibrations, but 
depending on the shape of the room this could result in 
standing waves. However, even if standing waves are 
generated, their influence on the sound quality can be 
prevented using the Auto MCACC’s standing wave 
control function (page 79).
Step 5: Default settings with the Auto MCACC 
Setup (auto sound field correction) function
It is more effective to perform the Auto MCACC Setup 
(page 37) procedure once the adjustments described 
above have been completed.
 Tip
• The distance to the subwoofer may be slightly larger 
than the distance actually measured with a tape 
measure, etc. This is because this distance is 
corrected for electric delay, and is not a problem.
VSX-33_UXJCB.book  88 ページ  2010年3月9日 火曜日 午前10時39分