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14
SYSTEM CONFIGURATION
SYSTEM CONFIGURATION
When all audio, video and system connections have
been made, there are a few configuration adjustments
that must be made.A few minutes spent to correctly
configure and calibrate the unit will greatly add to your
listening experience
.
Speaker Selection and Placement
The placement of speakers in a multichannel home
theater system can have a noticeable impact on the
quality of sound reproduced.
No matter which type or brand of speakers is used,
the same model or brand of speaker should be used
for the left front,
center and right front speakers.This
creates a seamless front soundstage and eliminates
the possibility of distracting sonic disturbances that
occur when a sound moves across mismatched
front-channel speakers.
Speaker Placement
Depending on the type of center channel speaker
in
use and your viewing device, place the center speaker
either directly above or below your TV, or in the center
behind a perforated front projection screen.
Once the center channel speaker is installed, position
the front left and front right speakers so that they are
as far away from one another as the center channel
speaker is from the preferred listening position. Ideally,
the front channel speakers should be placed so that
their tweeters are no more than 24" above or below
the tweeter in the center channel speaker.
Depending on the specifics of your room acoustics
and the type of speakers in use, you may find that
imaging is improved by moving the left front and right
front speakers slightly forward of the center channel
speaker. If possible, adjust all loudspeakers so that
they are aimed at ear height when you are seated in
the listening position.
Using these guidelines
,
you’ll find that it takes some
experimentation to find the correct location for the front
speakers in your particular installation. Don’t be afraid to
move things around until the system sounds correct.
Optimize your speakers so that audio transitions across
the front of the room sound smooth, and sounds from
all speakers appear to arrive at the listening position at
the same time (without delay from the center speaker
compared to the left and right speakers).
When the AVR 135 is used in 5.1-channel operation,
the preferred location for surround speakers is on the
side walls of the room,
no morre than 10 degrees off
axis from the listening position.
In a 6.1-channel sys
-
tem,
both side surround speakers and a back sur
-
round speaker are required.The center of the speaker
should face into the room.
A) Front-channel speaker installation with direct-view
TV sets or rear-screen projectors
B) Rear-wall speaker mounting using the positions
marked “5.1” is an alternate location for 5.1 systems.
When a 6.1 speaker configuration is used, the posi-
tion marked “6.1” should be used.
The rear wall location may also be used in place of
side-wall mounting in 5.1 systems when it is not prac
-
tical to place the main surround speakers at the sides
of the room.The rear surround speaker should be
mounted as close as possible to the center of the rear
wall for a
“6.1”
system.
As with the side speakers
, the rear surround speaker
should be located so that the bottom of the cabinet
is at least two feet higher than the listeners’ ears.
The speaker should be no more than six feet behind
the rear of the seating area.
If dipole-type speakers are used on either the side or
rear walls of the room, please note that if there are
arrows on the speakers they should face the front of
the room for the side speakers, or toward the center
of the wall for the rear speakers
.
Important Note: It is not possible to configure the
A
VR 135 for 7.1-channel operation. Do not connect
more than one speaker to the
Surround Back
Speaker Outputs
¶, as doing so may damage your
speakers, the AVR 135 or both. When 7.1-channel
information is received, for example through the
6/8-Channel Direct Inputs f, or when deriving 7-
Channel Stereo or Logic 7/7.1 surround information,
the
AVR 135 combines the left and right surround
back channel infor
mation and outputs it as a single
surround back channel.
Subwoofers produce nondirectional sound, so they
may be placed almost anywhere in a room.
Actual
placement should be based on room size and shape
and the type of subwoofer used. One method of find-
ing the optimal location for a subwoofer is to begin by
placing it in the front of the room, about six inches
from a wall, or near the front corner of the room.
Another method is to temporarily place the subwoofer
at your normal listening position, and then walk
around the room until you find a spot where the sub-
woofer sounds best. Place the subwoofer in that spot.
You should also follow the instructions of the sub-
woofer’s manufacturer, or you may wish to experi-
ment with the best location for a subwoofer in your
listening room.
System Setup
Once the speakers have been placed in the room and
connected, the remaining steps in the setup process
are to program the AVR 135’s bass management sys-
tem for the type of speakers used in your system,
calibrate the output levels, and set the delay times
used by the surround sound processor.
You are now ready to power up the AVR 135 to begin
these final adjustments.
1. Make certain that the AC power cord
‹ is firmly
inserted into an unswitched AC outlet.To maintain
the unit’
s safety rating, DO NOT replace the
power cord with one that has a lower current
capacity.
2.
Press the
Main P
o
wer Switch
1 in until it
latches and the word “OFF” on the top of the
switch disappears inside the front panel. Note that
the
P
o
wer Indica
tor
2 will tur
n amber
,
indicating that the unit is in the Standby mode.
3.
Remove the protective plastic film from the front-
panel lens
.
If left in place
,
the film will affect the
performance of your remote control.
4.
Install the three supplied
AAA batteries in the
remote as shown. Be certain to follow the (+)
and (–) polarity indicators that are on the top of
the batter
y compartment.
Center Front
Speaker
Rear-Wall Mounting
TV or Projection Screen
Right Front
Speaker
Left Front
Speaker
No more than 6 feet
when rear-mounted
speakers are used
5.1 5.16.1
AVR 135 OM 12/3/04 12:11 PM Page 14