Onkyo M-282 - Amplifier User manual
Contents
2
Channel
Amplifier
M-282
Before
using
Important
Safeguards
Features.
Supplied
accessory
...
Precautions.
Instruction
Manual
Facilities
and
connections
Rear
panel
facilities
and
connections.
Connection
diagram.
Front
panel
facilities
and
connections
Operations.
Thank
you
for
purchasing
the
Onkyo
2
Channel
Amplifier.
Please
read
this
manual
thoroughly
before
making
connections
and
plugging
in
the
unit.
Following
the
instructions
in
this
manual
will
enable
you
to
obtain
optimum
performance
and
listening
enjoyment
from
your
new
2
Channel
Amplifier.
Please
retain
this
manual
for
future
reference.
Appendix
Troubleshooting
guide...
Specifications
....•.Back
co
1
Features
Precautions
WIDE
RANGE
AMPLIFIER
TECHNOLOGY
(WRAT)
WRAT
virtually
eliminates
the
adverse
effects
of
counter¬
electromotive
force
by:
1)
applying
an
uncommonly
low
amount
of
NFB
(negative
feed¬
back),
2)
using
carefully
selected,
high-tolerance,
wide
range
parts
in
all
critical
sections,
and
3)
incorporating
innovative
circuit
topology
based
upon
decades
of
high-end
amplifier
design
experience
—
the
final
result
is
flat
response
beyond
100
kHz.
AUTO
POWER
ON/OFF
FUNCTION
You
can
turn
on
and
off
the
M-282
via
a
signal
input
to
the
AUDIO
IN
jacks
or
12
V
TRIGGER
IN
jack.
AUDIO
IN/OUT
LINK
FUNCTION
The
signal
inputs
from
the
AUDIO
IN
jacks
are
output
from
the
AUDIO
OUT
jacks.
When
used
as
a
2
channel
amplifier
in
a
multi
room
configuration,
you
can
connect
several
M-282s
to
enjoy
the
same
source
in
several
rooms.
1.
Warranty
Claim
You
can
find
the
serial
number
on
the
rear
panel
of
this
unit.
In
case
of
warranty
claim,
please
report
this
number.
2.
Recording
Copyright
Recording
of
copyrighted
material
for
other
than
personal
use
is
illegal
without
permission
of
the
copyright
holder.
3.
AC
Fuse
The
fuse
is
located
inside
the
chassis
and
is
not
user-serviceable.
If
the
power
does
not
come
on,
contact
your
Onkyo
authorized
service
sta¬
tion.
4.
Care
From
time
to
time
you
should
wipe
the
front
and
rear
panels
and
the
cabinet
with
a
soft
cloth.
For
heavier
dirt,
dampen
a
soft
cloth
in
a
weak
solution
of
mild
detergent
and
water,
wring
it
out
dry,
and
wipe
off
the
dirt.
Following
this,
dry
immediately
with
a
clean
cloth.
Do
not
use
rough
material,
thinner,
alcohol
or
other
chemi¬
cal
solvents
or
cloths
since
these
could
damage
the
finish
or
re¬
move
the
panel
lettering.
5.
Power
WARNING
BEFORE
PLUGGING
IN
THE
UNIT
FOR
THE
FIRST
TIME,
READ
THE
FOLLOWINaSECTION
CAREFULLY.
The
voltage
of
the
available
power
supply
differs
according
to
country
or
region.
Be
sure
that
the
power
supply
voltage
of
the
area
where
this
unit
will
be
used
meets
the
required
voltage
(e.g.,
AC
120
V,
60
Hz)
written
on
the
rear
panel.
For
Canadian
models
For
models
having
a
power
cord
with
a
polarized
plug:
CAUTION:
TO
PREVENT
ELECTRIC
SHOCK,
MATCH
WIDE:
BLADE
OF
PLUG
TO
WIDE
SLOT,
FULLY
INSERT.
Modclc
pour
les
Canadicn
Sur
les
modeles
dont
la
fichc
est
polarisee:
ATTENTION:
POUR
E
VITER
LES
CHOCS
ELECTRIQUES
5NTRODUIRE
LA
LAME
LA
PLUS
LARGE
DE
LA
FICH'
DANS
LA
BORNE
CORRESPONDANTE
DE
LA
PRISE
E',
POUSSER
JUSQU’AU
FOND.
Supplied
accessory
Check
that
the
following
accessory
is
supplied
with
the
M-282.
Power
cord
x
1
Rear
panel
facilities
and
connections
Caution:
•
Be
sure
to
always
refer
to
the
instructions
that
came
with
the
component
that
you
are
connecting.
•
Do
not
plug
in
the
power
cord
until
all
connections
have
been
made.
•
Do
not
make
connections
to
input
or
output
jacks
while
the
M-282
is
turned
on.
•
Always
turn
the
volume
of
the
control
amplifier
or
preamplifier
down
before
turning
on
the
M-282.
•
For
input
and
output
jacks,
red
connectors
(marked
R)
are
used
for
the
right
channel
and
white
connectors
(marked
L)
are
used
for
the
left
channel.
Insert
all
plugs
and
connectors
securely.
Improper
connections
can
result
in
noise,
poor
performance,
or
damage
to
the
Do
not
bind
audio
connection
cables
with
power
cords
and
speaker
cables.
Doing
so
may
adversely
affect
the
sound
quality.
rn
gnd
Use
this
GND
terminal
for
connecting
the
ground
(or
earth)
wire
of
other
component
if
humming
noise
is
heard.
2
1
AUDIO
IN/OUT
These
are
the
analog
audio
inputs
and
outputs.
Use
an
RCA-type
audio
connection
cable
to
connect
the
output
jacks
of
the
device
to
the
AUDIO
IN
jacks
on
the
M-282.
When
connecting
a
control
amplifier
or
preamplifier,
connect
the
PRE
OUT
jacks
to
the
AUDIO
IN
jacks.
If
you
connect
the
AUDIO
OUT
jacks
of
the
M-282
to
the
AUDIO
IN
jacks
of
another
M-282,
the
signal
input
at
the
AUDIO
IN
jacks
of
the
M-282
is
also
output
from
the
AUDIO
OUT
jacks
(Audio
In/Out
Link
Function).
If
you
set
the
TRIGGER
switch
to
AUDIO,
the
power
of
the
connected
M-282
turns
on
automatically
when
an
audio
signal
is
supplied
to
the
AUDIO
IN
jacks
(Auto
Power
On/Off
Function),
3
I
INPUT
LEVEL
Turn
this
INPUT
LEVEL
control
to
adjust
the
input
level
of
the
signal
from
the
AUDIO
IN
jacks.
Normally,
set
to
MAX.
4|
TRIGGER
Set
this
TRIGGER
switch
before
turning
on
the
M-282.
To
turn
on
the
M-282
with
the
^signal
input
from
the
12V
TRIGGER
IN
jack,
set
the
TRIGGER
switch
to
12V
TRIGGER.
To
turn
on
the
M-282
with
the
signal
input
from
the
AUDIO
IN
jack,
set
the
TRIGGER
switch
to
AUDIO
(Auto
Power
On/Off
Function).
If
you
do
not
use
Auto
Power
Function,
set
the
TRIGGER
switch
to
OFF.
5|
12V
TRIGGER
IN
If
the
connected
control
amplifiers
or
preamplifiers
have
a
12V
TRIGGER
output
jack,
use
1/8-inch
2P
mini-jack
cable
to
connect
the
12V
TRIGGER
IN
jack
on
the
M-282.
This
jack
works
on
between
5
to
12
volts
DC.
When
the
M-282
is
in
the
standby
state
and
the
TRIGGER
switch
is
set
to
12V
TRIGGER,
you
can
switch
the
M-282
between
the
on
and
standby
states
with
operations
at
the
control
amplifier
or
preamplifier.
Note:
When
a
plug
is
connected
to
the
12V
TRIGGER
jack,
be
sure
to
connect
the
analog
output
jacks
(or
PRE
OUT
jacks)
of
the
device
to
the
AUDIO
IN
jacks
of
the
M-282.
Otherwise,
no
sound
will
be
produced.
-Rear
panel
facilities
and
connections
6
SPEAKERS
Connect
the
jacks
on
the
speakers
to
the
SPEAKERS
terminals
using
the
speaker
cables.
These
terminals
are
compatible
with
banana
plug
connections.
1
Strip
away
15
mm
(
5
/s
in.)
of
wire
insulation.
2
Twist
wire
ends
very
tight.
3
Unscrew.
4
Insert
wire.
5
Screw.
15mm
2
When
you
are
using
only
one
speaker
or
when
you
wish
to
listen
to
monaural
(mono)
sound,
a
single
speaker
should
never
be
connected
in
parallel
to
both
the
right
and
left-
channel
terminals
simultane¬
ously.
o
1..
..
r
o
o
O
NO!
^
\
/
O
w
o
r
o
o
*1
>
<>
o
,
O
0
To
prevent
damage
to
cir¬
cuitry,
never
short-circuit
the
positive
(+)
and
negative
(~)
speaker
wire.
3
4
5
4
•
Do
not
connect
any
devices
other
than
speakers
to
these
terminals.
•
Be
sure
not
to
mistake
the
positive
and
negative
outputs
or
the
left
and
right
speakers.
Doing
so
will
result
in
an
unnatural
sound
space.
•
Only
connect
speakers
with
an
impedance
of
6
ohms
or
higher.
If
a
speaker
with
an
impedance
of
less
than
6
ohms
is
connected,
it
may
damage
the
M-282.
7
AC
INLET
Plug
the
supplied
power
cord
into
this
AC
INLET
and
then
into
the
power
outlet
on
the
wall.
*
Do
not
use
a
power
cord
other
than
the
one
supplied
with
the
M-282.
The
power
cord
supplied
is
designed
for
use
with
the
M-282
and
should
not
be
used
with
any
other
device.
•
Never
disconnect
the
power
cord
from
the
M-282
while
the
other
end
is
plugged
intolhe
wall
outlet.
Doing
so
may
cause
an
electric
shock.
Always
connect
by
plugging
into
the
wall
outlet
last
and
disconnect
by
unplugging
from
the
wall
outlet
first.
Connection
diagram
Since
the
many
users
will
purchase
the
M-282
together
with
the
TX-DS787,
here
is
an
explanation
of
how
to
connect
the
M-282
to
the
TX-DS787.
When
connecting
the
M-282
to
2
channel
control
amplifier
or
preamplifier,
connect
the
AUDIO
IN
jacks
of
the
M-282
to
the
PRE
OUT
FRONT
jacks
of
the
control
amplifier
or
preamplifier,
and
connect
the
front
speakers
to
the
SPEAKERS
terminals
of
the
M-282.
TX-DS787
PRE
OUT
SURR
BACK
jacks
Power
cord
(supplied)
Front
panel
facilities
and
connections
2
m
POWER
After
plugging
in
the
power
cord
into
the
rear
panel
and
wall
outlet,
pressing
this
switch
connects
the
M-282
to
the
AC
mains.
The
function
of
this
switch
differs
depending
on
the
setting
of
the
TRIGGER
switch
on
the
rear
panel.
Before
turning
on
the
power,
he
sure
to
set
the
TRIGGER
switch.
Besides,
before
turning
on
the
power,
make
sure
all
cables
are
properly
connected.
The
TRIGGER
switch
is
factory
set
to
OFF,
When
the
TRIGGER
switch
is
set
to
OFF
Pressing
the
POWER
switch
turns
on
the
M-282.
The
STANDBY/
ON
indicator
lights
orange
after
flashing
red
for
5
seconds.
Press
the
POWER
switch
again
to
turn
off
the
M-282.
When
the
TRIGGER
switch
is
set
to
AUDIO
If
no
signal
is
supplied
to
the
AUDIO
IN
jacks,
pressing
the
POWER
switch
enters
the
standby
state
and
the
STANDBY/ON
indicator
lights
red
after
flashing
red
for
5
seconds.
If
an
audio
signal
is
supplied
to
the
AUDIO
IN
jacks,
pressing
the
POWER
switch
turns
on
the
M-282
and
the
STANDBY/ON
indicator
lights
orange
after
flashing
red
for
5
seconds.
If
the
M-282
is
in
the
standby
state,
the
M-282
turns
on
automatically
when
an
audio
signal
is
supplied
to
the
AUDIO
IN
jacks.
When
the
signal
input
to
the
AUDIO
IN
jacks
is
not
supplied
for
more
than
4
minutes,
the
indicator
turns
to
red
and
the
M-282
enters
standby
state
(Auto
Power
On/Off
Function).
Press
the
POWER
switch
to
turn
off
the
M-282.
When
the
TRIGGER
switch
is
set
to
12V
TRIGGER
If
no
signal
is
supplied
to
the
12V
TRIGGER
IN
jack,
pressing
the
POWER
switch
enters
the
standby
state
and
the
STANDBY/ON
indicator
lights
red.
If
12V
DC
is
supplied
to
the
12V
TRIGGER
IN
jack,
pressing
the
POWER
switch
turns
on
the
M-282
and
the
STANDBY/ON
indicator
lights
orange
after
flashing
red
for
5
seconds.
If
the
M-282
is
in
the
standby
state,
the
M-282
turns
on
automatically
when
12V
DC
is
supplied
to
the
12V
TRIGGER
IN
jack.
When
the
signal
input
to
the
12V
TRIGGER
IN
jack
is
interrupted,
the
indicator
lights
red
and
the
M-282
enters
standby
state
(Auto
Power
On/Off
Function).
Press
the
POWER
switch
to
turn
off
the
M-282.
Note:
You
cannot
use
the
Auto
Power
On
Function
when
the
power
is
turned
off.
To
use
the
Auto
Power
On
Function,
leave
the
M-282
in
the
standby
state
once
the
M-282
enters
the
standby
state.
2
STANDBY/ON
Indicator
The
STANDBY/ON
indicator
lights
red
when
the
M-282
is
in
the
standby
state
and
lights
orange
when
the
M-282
is
turned
on.
Operations
Troubleshooting
guide
To
listen
to
music
or
view
your
favorite
movies,
follow
the
operations
below.
The
procedures
given
below
assume
that
the
other
system
components
are
already
connected.
(For
example,
that
the
source
components
are
already
connected
to
the
control
amplifier
or
the
preamplifier.)
1.
Lower
the
volume
at
the
control
amplifier
or
preamplifier.
Lower
the
volume
of
the
control
amplifier
or
preamplifier
to
the
minimum
so
that
when
the
M-282
is
turned
on,
you
do
not
hear
loud
unwanted
sounds.
2.
Select
the
input
on
the
control
amplifier
or
preamplifier.
Select
the
proper
input
on
the
control
amplifier
or
preamplifier.
3.
Slowly
increase
the
volume
of
the
control
amplifier
or
preamplifier.
Now
all
that
remains
is
to
control
the
control
amplifier
or
preamplifier
and
the
other
connected
system
components
to
enjoy
your
music
or
movies.
No
power.
•
The
power
cord
is
disconnected.
Connect
the
power
cord.
•
The
setting
of
the
TRIGGER
switch
is
wrong.
—i
►
Set
the
TRIGGER
switch
to
the
appropriate
position.
•
With
the
TRIGGER
switch
set
to
a
position
other
than
OFF,
the
POWER
switch
is
pressed
again
immediately
after
turning
the
power
off.
—
►
Be
sure
to
leave
more
than
3
seconds
before
turning
the
power
on
again.
Power
turns
on
but
no
sound.
•
Bad
connections
or
wiring.
—>
Check
connections,
speaker
cables,
etc.
•
Amplifier
protection
circuitry
has
been
activated.
—
►
Contact
your
Onkyo
Service
Center.
•
The
INPUT
LEVEL
control
is
set
to
MIN.
—
►
Turn
the
INPUT
LEVEL
control
to
adjust
the
input
level.
The
STANDBY/ON
indicator
does
not
light
when
the
POWER
switch
is
pressed.
•
Bad
connections
or
wiring.
—
►
Check
if
the
power
cord
is
properly
connected.
If
the
indicator
still
does
not
light,
turn
off
the
M-282,
disconnect
the
power
cord,
and
contact
your
Onkyo
Service
Center.
The
STANDBY/ON
indicator
flashes
red
for
more
than
7
seconds
when
the
POWER
switch
is
pressed.
•
A
malfunction.
—
►
Press
the
POWER
switch
to
turn
off
the
M-282.
After
3
seconds,
press
the
POWER
switch
again
to
turn
on
the
M-282.
If
the
indicator
still
flashes,
turn
off
the
M-282,
disconnect
the
power
cord,
and
contact
your
Onkyo
Service
Center.
No
sound
from
the
speaker,
or
at
very
low
volume.
•
Bad
connections
or
wiring.
-
♦
Check
connections,
speaker
cables,
etc.
•
The
INPUT
LEVEL
control
is
set
to
MIN.
—*
Turn
the
INPUT
LEVEL
control
to
adjust
the
input
level.
•
The
settings
on
the
control
amplifier
or
preamplifier
are
wrong.
-+
Check
the
settings
on
the
control
amplifier
or
preamplifier.
The
left
and
right
sounds
are
unbalanced
or
reversed.
•
Bad
connections
or
wiring.
—
►
Check
connections,
speaker
cables,
etc.
•
The
polarity
of
the
speaker
cable
is
wrong.
Check
the
polarity
of
the
speaker
cable.
Specifications
AMPLIFIER
SECTION
Power
Output:
Dynamic
Power
Output:
Total
Harmonic
Distortion:
IM
Distortion:
Damping
Factor:
Input
Sensitivity
and
Impedance:
Output
Level
and
Impedance:
Rated
Speaker
Impedance:
Frequency
Response:
Signal-to-Noise
Ratio:
100
Watts
per
channel
min.
RMS
at
8
ohms,
both
channel
driven
from
20
to
20,000
Hz
with
no
more
than
0.08
%
total
harmonic
distortion.
125
Watts
per
channel
min.
RMS
at
6
ohms,
both
channel
driven
from
1
kHz
with
no
more
than
0.1
%
total
harmonic
distortion.
2
x
140
Watts
at
8
ohms
0.08
%
at
rated
power
0.08
%
at
rated
power
100
at
8
ohms
1
V,
50
kohms
1
V,
10
kohms
6
ohms
MIN
10
Hz
-
100
kHz,
±1
dB
110
dB
(IHF
A,
0.5
V
input)
GENERAL
Power
Supply:
Power
Consumption:
Dimensions
(W
x
H
x
D):
Weight:
Specifications
and
features
are
AC
120
V,
60
Hz
2.5
A
435
x
145
x
316
mm
17-Vs"
xS-'Vift"
x
12-
7
/i6"
8.5
kg,
18.7
lbs.
subject
to
change
without
notice,
ONKYO
CORPORATION
Sales
&
Product
Planning
Div.:
2-1,
Nisshin-cho,
Neyagawa-shi,
OSAKA
572-8540,
JAPAN
Tel:
072-831-8111
Fax:072-833-5222
ONKYO
U.S.A.
CORPORATION
200
Williams
Drive,
Ramsey,
N.J.
07446,
U.S.A.
Tel:
201-825-7950
Fax:201-825-8150
E-mail:
ONKYO
EUROPE
ELECTRONICS
GmbH
Industriestrasse
20,
82110
Germering,
GERMANY
Tel:
089-849-320
Fax:089-849-3265
E-mail:
ONKYO
CHINA
LIMITED
Units
2102-2107,
Metroplaza
Tower
I,
223
Hing
Fong
Road,
Kwai
Chung,
mt
HONn
KONG
Tel:852-2429-31
IS
Tax:
852-2428-9039
1
HOMEPAGE
|
http://www.onkyo.co.
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