Bedienungsanleitung Pioneer VSX-9140TXH (Seite 97 von 123) (Englisch)

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Additional information

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

distance, angle 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

pos

sib

le to automatically correct the speaker distance

electrically to a precision of 1/2 inch using the Auto

MCACC Setup function (page 41).

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 ar tificially.

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 (12 inches) to 80 cm (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 en

viron

ments 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, p lace it at

an angle so that it is not parallel to the wall surface. This

can help reduce any sympathetic vibrat

ions, but

dependin

g on the shape of the r oom 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 87).

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 41) 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-9140TXH_CUXJ.book 97 ページ２００９年４月１６日　木曜日　午前１０時３６分

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