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AVR75 120   rev (c) 8/27/97

On-Screen Display

AUDIO

or 

VIDEO

. When either input

type is highlighted in reverse video use
the  

‹

or 

› 

buttons 

i

to select the

source you wish to listen to or view.
Remember that the video source should
be selected first when you wish to watch
one source and listen to another.

To select a digital audio input use the 

⁄

or 

¤ 

buttons 

i

to position the on-

screen cursor 

>

next to 

DIGITAL

. Press

j

and note that the word

DIGITAL

will be highlighted in reverse

video. Then use the 

‹

or 

› 

buttons 

i

to select the desired digital source. Note
that when any digital source is selected,
the audio source will indicate 

**

.

You may also use this menu to turn the
attenuation, or ATT, function on or off
for a source by moving the cursor to the

ATT

line and using the 

‹

or 

› 

buttons

i

to select 

ON

or 

OFF

. When the ATT

function is enabled the input level is
reduced to prevent overloading the input
circuits.

SURROUND MODE

: At this menu  (see

figure #15) you may change the 
surround mode by using the 

⁄

or 

¤

buttons 

i

to position the on-screen

cursor 

>

next to 

MODE

and using the 

‹

or 

› 

buttons 

i

to select the desired

mode. To change the delay time position
the cursor next to 

SURROUND CH

and

then use the 

‹

or 

› 

buttons 

i

to select

desired delay time for the surround
channels. Note that an adjustment for
the delay time of the center channel is
possible only in the Dolby Digital mode.

TEST TONE

: At this menu you 

may adjust the front and surround
speaker output levels. For information 
on this procedure, refer to the System
Configuration section of this manual.

SET UP MENU

: For information on

using the Setup menus, refer to the
System Configuration section of this
manual.

SLEEP TIMER SET

: This enables you

to set the sleep timer, which will place the
unit in a standby mode after a set period
of time. To reach this menu, press the 

⁄

or 

¤ 

buttons 

i

to position the on-

screen cursor 

>

next to 

SLEEP TIMER

and press 

j

. At the next screen,

the 

SLEEP TIMER SET

menu (see fi

gure #16) the cursor will be next to

TIMER SET

. Use the 

‹

or 

› 

buttons

i

to select the amount of time before

turn off and note that the time will blink.
Press the 

¤

button so that the on-screen

cursor 

>

is next to 

TIMER OFF ON

. Use the 

‹

or 

› 

buttons 

i

to highlight 

ON

and

press 

j

. The time figure will

stop flashing indicating that the timer 
has been started. Press 

¤

one more time

so that the cursor is next to 

RETURN

TO MAIN MENU

and press 

j

.

Note that when the 

MAIN MENU

returns

to the screen the time figure 
will appear next to the words 

SLEEP

TIMER

. You may check the time

remaining before shut off at any time 
by pressing the 

button 

z

on 

the remote and viewing the front panel
or on-screen display (see figure #12).

Position the on-screen cursor 

>

next 

to 

MENU OFF

at any time to exit the

menu system and return to normal
operation.

27

S L E E P   T I M E R   S E T

T I M E R   S E T     1 0 m i n

T I M E R   O F F     O N

R E T U R N   T O   M A I N   M E N U

Figure 16

M O D E       : P R O   L O G I C

D E L A Y   T I M E   C O N T R O L

C E N T E R   C H     : N O N E

S U R R O U N D   C H     : 2 m s

R E T U R N   T O   M A I N   M E N U

S U R R O U N D   M O D E

Figure 15

AVR75 om (c)  9/16/98 11:33 AM  Page 27

Advanced Features

In addition to basic audio functions,
this receiver is capable of audio/video
dubbing and a wide range of surround
modes. Advanced digital decoding and
signal processing provides specialized
surround modes that are compatible with
virtually all types of music software and
movie soundtracks.

The input directed to the audio and video
record outputs 

£ ∞ e h

is normally

the source currently selected for listening
through the AVR75. If you are using a
tape recorder or cassette deck with three
heads and wish to listen to the “off tape”
playback to verify the recording, press the
front panel

button 

5

or the

d

button on the remote until

the red light over

on the front

panel illuminates. You will then hear the
source as it is being recorded and played
back through your tape machine. The
source will be verified in both the front
panel and on-screen displays. Note that
the video surrounding the word

AUDIO

will turn white to indicate that you are in
the Tape Monitor mode.

It is possible to watch and listen to, or
record the video from one source along
with the audio from a different input.
This is useful in the case of musical pro-
grams where the sound is being broadcast
via FM, or for sports events where you
wish to have the picture from a TV sta-
tion, but the play-by-play from a radio
station.

For simulcast operation first select the
video source input using the input selec-
tion buttons on the remote control or
front panel

8)!d

. Next, select the

audio source 

2457d

. Note that

the on-screen menu display will show the

split sources (see figure #7). The front
panel display will show the audio source
in large letters in the main portion of the

J

, while the

video source will appear in smaller letters
next to the

indicator 

P

.

With the increasing sophistication of
today’s home entertainment systems, it
often takes numerous remote controls to
turn on all components in a system. This
receiver’s unique “TV Auto On” function
greatly simplifies that task and reduces
the actions needed to bring your entire
system to life.

If you are using a TV or projector that has
a video output, connect the TV’s audio
and video outputs to the rear panel of the
AVR75

ª

. Once those connections have

been made and the feature is turned on,
the AVR75 will automatically turn on
whenever the TV set is on, thanks to a
video-sensing circuit in the AVR75. This
eliminates the need to turn the unit on
separately from the TV.

As long as the TV is on and feeding a
video signal, the AVR75 will remain on. 
If no other input source is selected and
the TV is turned off, the AVR75 will turn
off approximately five minutes after the
TV set.

This feature is turned off in the AVR75’s
factory configuration and must be turned
on using the following steps:

1. Press the front panel 

⁄

button 

@

.

2. While holding the Mode button, press
the 

button 

8

for at least 5 seconds

until the 

J

display reads 

TV AT OFF

.

3. Release both buttons and immediately
press the 

button 

8

again until the

display reads 

TV AT ON

.

If you select another input, such as CD 
or the AM/FM tuner after the unit has 
turned on, it will remain on even if the 
TV is turned off. You must then turn the
receiver off using the front panel or
remote 

buttons 

1c

.

NOTE: The TV Auto On Function will only
respond to conventional video signals. It
will NOT operate with S-Video.

If, at some future point you wish to dis-
able this feature, follow the steps outlined
above but press the 

button 

8

as

shown in step #3 so that the display reads

TV AT OFF

.

One aspect of the surround modes is the
delay of audio signals between the front
speakers and the rear speakers. Each
surround mode is factory preset with a
specific delay time, but it is possible to
individually adjust the delay timing to
custom tailor the sound to your individ-
ual taste and the acoustic conditions in
your listening room or home theater.

The factory setting is appropriate for
most rooms, but some installations
create an uncommon distance between
the front and surround speakers that may
cause the arrival of front channel sounds
to become disconnected from surround
channel sounds.

To resynchronize the front and surround
channels, follow these steps:

1. Measure the distance from the
listening/viewing position to the
front speakers.

2. Measure the distance from the
listening/viewing position to the
surround speakers.

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Advanced Features

3. Subtract the distance to the
surround speakers from the distance
to the front speakers.

a. When setting the delay time for
the Dolby Digital surround mode,
the optimal delay time is the result-
ing figure. For example, if the front
speakers are ten feet away and the
surround speakers are five feet
away, the optimal delay time is
figured as 10-5=5. Thus, in this
example, the delay should be set at
five milliseconds.

b. When setting the delay time for
an analog surround mode (Pro
Logic, Hall, Movie or Matrix) take
the result of the subtraction and
add 15 to obtain the optimal delay
time. For example, if the front
speakers are ten feet away and the
surround speakers are five feet
away, the optimal delay time is
figured as 10-5+15=20. Thus in
this example, the delay should be
set at twenty milliseconds.

The Dolby Digital mode also provides a
separate setting for the center channel
delay mode, since the discrete nature 
of Dolby Digital signals makes the
location of the center channel speaker
more critical. To set the delay for the
center channel, measure the distance
from the preferred listening position in
the center of the room to both the center
channel speaker and either the left or
right speaker. 

If the distances are equal no further
adjustment is required and the center
delay should be set to zero. If the distance
to the front speakers is greater than the
distance to the center speaker you may
wish to reposition the speakers by mov-
ing the front left/right speakers closer 
to the listening position or the center
speaker further away from the listening
position.

If repositioning of the speakers is not
possible, adjust the center delay time 
so that you add one millisecond of center
channel delay for each foot that the dis-
tance to the center speaker lags behind
the front speakers. For example, if the
front left/right speakers are each 10 feet
from the listening position and the
center channel speaker is 8 feet away, the
delay is figured as 10-8=2, suggesting an
optimal center delay of 2 milliseconds.

The factory settings for the delay times
are shown in the chart on page 31. If the
use of the formulas described above or
your own experimentation and prefer-
ences suggest that the delay time be
changed, the adjustment is made from
the 

SURROUND MODE

menu.

Reach the menu by pressing 

j

and then pressing the 

¤

button 

i

once so that the on-screen cursor 

>

is

next to the 

SURROUND MODE

line and

then press 

again. The 

SUR-

ROUND MODE

menu (see figure #15)

will then appear. If you wish to change
the surround mode before proceeding,
use the 

‹

or 

› 

buttons 

i

until the

desired mode is highlighted in reverse
video. Next press the 

¤

button so that

the cursor is next to 

CENTER CH

or

SURROUND CH

. (Note that center

channel delay may only be adjusted in
Dolby Digital mode.) Press the 

› 

button

i

until the desired time is highlighted

in reverse video and then press 

¤

until

the cursor is next to 

RETURN TO

MAIN MENU

and press 

j

.

Other adjustments may now be made, or
move the cursor to 

MENU OFF

and

press 

to exit the menu system.

Dolby Digital
Dolby Digital (also known as AC-3) is the
latest advancement in surround sound
technology, delivering up to five full-
range surround channels (left, center,

right, left surround and right surround)
plus a special dedicated Low-Frequency
Effects (LFE) channel. This represents a
major advancement over traditional
analog surround in that each surround
channel is fully discrete and capable of
full bandwidth reproduction. Dolby
Digital is available on DVD and LV discs,
and it will be a part of the new high
definition television (HDTV) system
when digital broadcasting begins in
1998. Dolby Digital for the home is based
on the same system used to deliver digital
audio soundtracks in movie theaters,
enabling true cinema reproduction in
your home.

To utilize the Dolby Digital mode you
must have a digital source properly
connected to the AVR75. The RF digital
output of a laser disc player should be
connected to the 

jack 

a

on

the rear panel. Note that this jack is for
use only with the RF output from an LV
player and should not be connected to
any other audio, video or digital device.
Digital datastream outputs from DVD
players, HDTV receivers and CD players
should be connected to the 

or 

inputs on the rear

panel 

° ·

. In order to provide a back-

up signal and a source for recording, 
the analog outputs provided on digital
source equipment should also be con-
nected to their appropriate inputs on the
AVR75 rear panel. (e.g., connect the
analog stereo audio output from a DVD
to the 

inputs 

•

on the rear panel

when you connect the digital outputs).

When playing back a digital source, first
select the input using the remote or front
panel controls 

d48)!

. Next

select the digital source by pressing the
appropriate 

button

9g

. When the digital source is play-

ing, the AVR75 will automatically detect

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Advanced Features

if it is a multichannel Dolby Digital
source or a conventional PCM signal,
which is the standard output from CD
players. An indicator will light in the
Front Panel Information Display to
confirm the digital signal is 

A

or 

Q

and if the source is 

,

or 

C

.

When an AC-3 source is playing the
AVR75 will automatically switch to the
Dolby Digital surround mode. It is
important to note, however, that not all
AC-3 sources are encoded with the full
complement of five channels plus LFE.
When an AC-3 source is playing the

J

will

change to show the input source 
(

, 

or 

) and then the

surround mode will briefly be displayed
(

DOLBY AC-3

). After these displays

appear briefly, the display will show the
selected analog source and the digital
surround mode as follows:

3/2.1:

This message appears

when a full complement of Dolby
Digital signals is present: 3 front
channels (left, center and right), 
2 surround channels (surround 
left and surround right) and “1”
channel, which is the dedicated Low
Frequency Effects (LFE) channel. 

3/1:

This message indicates the

AC-3 system is decoding a standard
Dolby Pro Logic signal with left,
center and right front channels and 
a single mono surround channel.

2/0:

This message indicates that

the AC-3 system is decoding a tradi-
tional two-channel stereo signal and
that no center, surround or LFE
signals are present.

Night Mode
A special feature of Dolby Digital is the
Night mode, which enables AC-3 input
sources to be played back with their full
range while reducing the minimum peak
level by 

1/4

to 

1/3

. This prevents abruptly

loud transitions from causing distur-
bances without reducing the impact of
the digital source. The Night mode is
available only when AC-3 signals with
special data are being played.

To engage the Night mode, press the

button 

6 e

on the front panel

or remote and note that 

indicator

E

will illuminate. The Night mode may

also be turned on through 

SETUP

MENU 3

.

1. When the playback unit is in a pause,
fast forward or chapter search mode the
digital audio data may momentarily
stop, causing a 

NO DATA

message to be

displayed. This is normal and does not
indicate a problem with either the AVR75
or the source machine. The AVR75 will
return to Dolby Digital/AC-3 playback as
soon as the data is available when the
machine is in a standard play mode.

2. If a digital source is being played 
and you switch to another input the
AVR75 will revert to the analog input
when you once again select the prior
source. For example, if a DVD is playing
with coax digital audio and you switch 
to TV and then back to DVD, the DVD’s
analog audio will play when you return
to that source. The digital input MUST 
be selected each time you wish to use it,
even if it was in use the last time that
source was playing.

3. The AVR75 will decode digital audio
sources with a sampling frequency of
32kHz, 44.1kHz and 48kHz. Although
this will enable it to decode virtually all
DVD movies and HDTV sources, it is pos-
sible that some digital sources may not
be compatible with the AVR75.

4. The AVR75 will automatically detect
most Dolby Digital and PCM digital
audio sources and switch to the proper
surround mode. It is possible, however,
that future source equipment that could
not be anticipated at this time, may
require manual surround mode selection
using the 

@ y

.

PCM Audio Playback
PCM (Pulse Code Modulation) is the
non-compressed digital audio system
used for conventional compact discs and
non-AC-3 laser discs. The digital circuits
in the AVR75 are capable of high-quality
digital-to-analog decoding, and they may
be connected directly to the digital audio
output of your CD or LV player.

Connections should be made to the 

or 

inputs

° ·

on the rear panel, using whichever

input is not occupied by an AC-3 source
such as a DVD player.

To listen to a PCM digital source first
select the analog input (e.g., CD) and
then press the desired 

button 

9g

. Indicators will light to

confirm that 

data is being received

Q

and if the 

or 

input 

C

is the source. The 

J

will show

both the last analog source and the type
of digital input in use (e.g., 

CD

/

COAX

).

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