Onkyo TX-906 - Explanation of Sound Modes; Surround System Operation (TX-906); Dolby Pro Logic and Hall Effects

Explanation
Neer
eee
ee
a
Surround System (TX-906 only)
Many
motion
pictures
produced
in
the
last
decade
have
been
released
in
“Dolby
Stereo”
sound,
with
music,
dialogue,
and
panned
effects
coming
from
the
3-channel
front
soundstage,
and
surround
effects
and
ambience
emmanating
from
the
sides
and
rear
of
the
theater.
These
four
channels
are
encoded,
or
matrixed,
into
a
two-channel
DOLBY
STEREO
release,
and
decoded
in
the
theater
by
a
professional
DOLBY
STEREO
MP
(Motion
Picture)
decoder.
These
surround
sound
effects
are
“hidden’
in
the
two-channel
stereo
movie
release,
and
decoded
in the theater by special Delby equipment.
These
same
two-channel
motion
picture
masters
are
used
for
production
of
stereo
VHS,
VHS-HIi-Fi,
Beta
Hi-Fi,
and
stereo
Laser
Vision
discs
that
you
can
buy
or
rent
at
your
video
store.
The
TX-906
incorporates
the
Dolby
Pro
Logic
Surround
Circuit,
which
is
designed
to
emulate
the
audience
experience
found
in
DOLBY
STEREO
theaters.
Like
DOLBY
SURROUND,
DOLBY
PROLOGIC
SURROUND
is
capable
of
creating
a
multi-dimensional
soundstage,
but
with
the
increased
channel
separation
it
gives
a
far
greater
sense
of
“movement”
and
sound
localization.
Just
like
in
the
theater,
the
addition
of
the
active
center
channel
ensures
that
ail
audience
members
hear
dialogue
coming
from
its
on-screen
sources regardless of seating position.
Since
the
TX-906
is
equipped
with
a
front
amplifier
and
a
rear
(surround)
power
amplifier,
Dolby
Pro
Logic
Surround
and
Hall,
effects
can
all
be
produced.
You
can
enjoy
the
feeling
of
a
movie
theater
or
concert
hal!
in
your
own
room.
To
reproduce
these
effects,
rear
(surround)
speakers
and
center
speakers
are
necessary.
The
placement
of
these
speakers
is
important.
You
can
experiment
with
various
positions
and
locations to find the best placement for optimum sound quality in your roam.
*
The
TX-906
comes
without
a
center
power
amplifier.
Use
a
power
amplifier
with
a
power
rating
equal
to
or
better
than
the
front
amplifier
of
the
TX-906.
Without
a
center
power
amplifier,
you
can
add
the
Dolby
Pro
Logic
Surround
Sound
effect
to
the
playback,
by
setting
the center mode to PHANTOM.
Examples of Speaker Placement
A
CENTER
LEFT \uisrenen_/
\
--— SURROUND
Nw
LISTENER
| <.—— REAR (SURROUND) -——> |
RIGHT
LEFT
With
the
rear
(surround)
speakers
facing
the
wall,
the
reverberation
effect
amplifies
the
“surround”
effect
for
a
more
“tive”
sound.
Try
it
and
see!
® Dolby Pro Logic Surround (TX-906 only)
When
using
video
cassette
tapes
or
video
discs
that
have
the
DOLBY
STEREO
or
DOLBY
SURROUND
trade
mark,
you
can
achieve
the
same kind of sound in your room that you experience in a movie theater.
The
main
Dolby
Pro
Logic
Surround
functions
are
sent
through
the
center
channel.
Because
of
this,
three
modes
must
be
available
from
the speaker and the center amplifier used by the center channel.
1.
Normal:
When
a
small
speaker
is
used
on
the
center
channel,
signais
of
100
Hz
or
more
are
output
from
the
center
speaker,
and
signals
of
100
Hz
or
less
are
split
between
the
front
L
and
R
channels.
2.
Wide
band:
When
the
front
L
and
R
channels
are
using
similar
speakers
on
the
center
channel,
it
operates
throughout
the
full
frequency
range.
3.
Phantom:
When
no
center
speaker
is
used,
the
center
channel
signal
is
split
between
the
front
L
and
R
speakers,
producing
the
same
resuits
as
found
with
a
center
speaker.
® Hall
In
most
cases,
the
same
kind
of
sound
that
you
experience
in
a
theater
or
concert
hall,
and
the
natural
expansion
of
sound,
can
be
achieved
with a music source.
Hall mode would be best suited to jazz and classical.
Multiple Room Remote System ( MR )
The
ONKYO
HR-10(W)
Remote
Sensor
(sold
separately)
greatly
increases
system
flexibility.
Used
with
your
TX-906/904,
the
HR-10(W)
allows
you
to
control
speakers
even
when
you
are
not
in
the
same
room
as
the
TX-906/904.
in
addition
to
basic
functions
like
speaker
on-off
and
volume
and
so
on,
you
can
also
control
most
ONKYO
CD
Players,
Cassette
Decks
and
Digital
Audio
Tape
Decks
that
use
the
FRI
(Remote
Interactive)
system.
Adding
an
HE-50(AC)
Remote
Emitter
(also
available
as
an
option)
allows
you
to
control
even
the
non-ONKYO
com-
ponents
in
your
home
entertainment
system
from
a
separate
room.
When
the
HE-50(AC)
is
being
used
to
control
more
than
one
device
from
a
distance
but
the
infrared
beams
from
the
HE-50(AC)
remote
control
transmitter
alone
will
not
reach
these
devices,
connect
an
HE-10
(remote
emitter
head)
to
the
HE-50(AC),
and
set
it
up
to
be
aimed
at
the
devices
to
be
controlled.
The
HW-2
cable
6%’
(2m)
is
attached
with
the
HE-10.
Up
to
three
HE-10
units
can
be
used
with
this
equipment.