Bedienungsanleitung Marantz SR5003 (Seite 77 von 81) (Englisch)

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BASIC

CONNECTIONS

BASIC OPERATION

ADVANCED

CONNECTIONS

SETUP

ADVANCED

OPERATION

TROUBLESHOOTING

OTHERS

NAMES AND

FUNCTION

OTHERS

Several factors can degrade the sound from even

the best loudspeakers in a listening room. One

of the most important is the interaction of sound

from the loudspeakers with large surfaces such as

walls, the ﬂ oor and the ceiling in the room. Even

with careful loudspeaker placement and acoustical

treatments, there are signiﬁ cant problems that are

caused by room acoustics. These include reﬂ ections

from nearby surfaces and standing waves created

between large parallel surfaces in the room. In a

home theater, the situation is further complicated

because there are several listening locations. The

effects of room acoustics on the sound arriving at

each person’s ears are very different and the result is

a listening experience that is degraded in a different

way for each person in the room.

It is not uncommon to have variations in two adjacent

seats as large as 10 dB, particularly in the frequency

range below 250 Hz. The solution to this problem is to

apply room correction after measuring precisely how

each loudspeaker interacts with the room. Because

the room causes variations in the frequency response

of the loudspeakers that are so large from seat to

seat, it is important to sample the sound from several

locations in the listening room. This should be done

even if there is only one listener. Measurement at a

single location is not representative of the acoustical

problems in the room and will, in most cases,

degrade overall performance. Audyssey MultEQ is

the only technology able to achieve room correction

for multiple listeners in a large listening area. It does

so by combining the data collected at several points

in the room from each loudspeaker and then applying

correction to minimize the acoustical effects of the

room and match the frequency resolution of human

perception (known as psychoacoustics).

Further, MultEQ correction is applied in frequency

and time domains and removes artifacts, such as

smearing or modal ringing, sometimes associated

with traditional methods of room equalization.

In addition to correcting frequency response problems

over a wide listening area, Audyssey MultEQ provides

a completely automated sound system set-up

process. It identiﬁ es the number of loudspeakers

connected to the ampliﬁ ers and whether they are

satellites or subwoofers. If there is a least one

subwoofer connected, Audyssey MultEQ determines

the optimum crossover frequency between each

satellite and the subwoofer(s). It automatically

checks the polarity of each loudspeaker and alerts

the user to the ones wired out-of- phase relative to

the others.

It measures the distance to each loudspeaker from

the main listening position and adjusts the delays

so the sound from each loudspeaker arrives at the

same time. Finally, Audyssey MultEQ determines the

playback level of each loudspeaker and adjusts the

volume trims so all levels are equal.

Manufactured under license from Audyssey

Laboratories. U.S. and foreign patents pending.

MultEQ is a registered trademark of Audyssey

Laboratories.

x.v.Color

“x.v.Color” and “x.v.Color” logo are trademarks of

Sony Corporation.

XM Satellite Radio Ready

The XM name and related logos are registered

trademarks of XM Satellite Radio Inc.

XM HD Surround uses Neural Surround

technology

to achieve optimal surround sound from XM radio.

the SIRIUS dog logo are registered trademarks of

SIRIUS Satellite Radio Inc.

SR5003_U_1_ENG 3_3.indd 74SR5003_U_1_ENG 3_3.indd 74 08.7.4 4:49:25 PM08.7.4 4:49:25 PM

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Marantz SR5003 Seite 77

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