Sherwood AX-7R User manual

OPERATING INSTRUCTIONS
Stereo Integrated Amplifier
SSSSSSSSSSS

Unpacking and Installation.
Congratulations
on
Your
Purchase!
Your
new
high
fidelity
Amplifier
is
designed
to
deliver
maximum
enjoyment
and
years
of
trouble
free
service.
Please
take
a
few
moments
to
read
this
manual
thoroughly.
It
will
explain
the
features
and
operation
of
your
Amplifier
and
help
a
trouble
free
installation.
Please
unpack
your
Amplifier
carefully.
We
recommend
that
you
save
the
carton
and
packing
material.
They
will
be
helpful
if
you
ever
need
to
move
your
unit
and
may
be
required
if
you
ever
need
to
return
it
for
service.
Your
Amplifier
is
designed
to
be
placed
in
a
horizontal
position
and
it
is
important
to
allow
at
least
two
inches
of
space
behind
your
unit
for
adequate
ventilation
and
cabling
convenience.
To
avoid
early
damage,
never
place
the
unit
near
radiators,
in
front
of
heating
vents,
in
direct
sunlight,
or
in
excessively
humid
or
dusty
location.
Connect
your
complementary
components
as
illustrated
in
the
following
section
RISK OF ELECTRIC SHOCK.
DO NOT OPEN.
CAUTION: TO REDUCE THE RISK
This symbo! is intended to alert the user to
the presence of uninsulated “dangerous
OF ELECTRIC SHOCK, DO NOT
REMOVE
COVER
(OR
BACK).
voltage"
within
the
product's
enclosure
that
NO
USER-SERVICEABLE
may
be
of
sufficient
magnitude
to
constitute
a risk of electric shock to persons.
PARTS
INSIDE.
REFER
SERVICING
;
_
TO
QUALIFIED
SERVICE
This
symbol
is
intended
to
alert
the
user
to
the presence of important operating and
PERSONNEL.
maintenance
(servicing)
instructions
in
the
literature accompanying the appliance.
Caution: To prevent electric shock do not use this (polarized) plug
with an extension cord, receptacle or other outlet unless
WARNING
the
blades
can
be
inserted
to
prevent
blade
exposure.
To prevent fire or shock hazard, do not
expose the unit to rain or moisture.

Read
this
Before
Operating
Your
Unit
FOR THE U.S.A AND
CANADA Hie teens 120 V
FOR YOUR SAFETY
Units shipped to the U.S.A and Canada are designed
for operation on 120 V AC only.
Safety precaution for a polarized AC plug.
However, some products may be supplied with a non-
polarized plug.
CAUTION: TO PREVENT ELECTRIC SHOCK, DO
NOT USE THIS (POLARIZED) PLUG WITH AN
EXTENSION CORD, RECEPTACLE OR OTHER
OUTLET UNLESS THE-BLADES CAN BE FULLY
INSERTED TO PREVENT BLADE EXPOSURE.
FOR THE UNITED KINGDOM ...... 240 V
FOR YOUR SAFETY
PAN-EUROPEAN UNIFIED VOLTAGE
All units are suitable for use on supplies 220~240 V AC.
The mains plug must be removed from the wall socket
prior to any internal examination.
The wires in this mains
fead are coloured in
accordance with the
following code:
The wires in this mains
lead must be connected
to.the terminals in the
plug as follows:
Blue........ Neutral Wire colour
Brown......... Live Blue...... N or Black
Brown...... L or Red
Brown to
Blue to Live
[*
Neutral O i
Plug
NOTES:
1. If a 13-amp plug is used, this must be fitted with a
3-amp fuse
2. If a 3-pin plug with earthing contact is used, no wire
must be connected to the E terminal
FORADDED SAFETY, WHEN CONNECTING
THE AC MAINS LEAD TO A3PIN PLUG
PLEASE USE A 5A FUSE APPROVED BY ASTA
TOBS1362, LE. CARRIES THE
<Ata> MARK
FOR AUSTRALIA AND
EUROPE «--------0--0-0 220 V/230 V/240 V
FOR YOUR SAFETY
Units shipped to Australia are designed for operation
on 240 V AC only.
To ensure safe operation the three-pin plug supplied
must be inserted only into a standard three-pin power
point which is effectively earthed through the normal
household wiring. Extension cords used with the
equipment must be three-core and be correctly
wired to provide connection to earth. Wrongly wired
extension cords are a major cause of fatalities. The fact
that the equipment operates satisfactorily does not
imply that the power point is earthed and that the
installation is completely safe. For your safety, if in any
doubt about the effective earthing of the power point,
consult a qualified electrician.
PAN-EUROPEAN UNIFIED VOLTAGE
All units are suitable for use on supplies 220~240 V AC.
FOR OTHER COUNTRIES --- 120 V/220 V
FOR YOUR SAFETY
Units shipped to countries other than the above coun-
tries are equipped with an AC voltage selector switch
on the rear panel. Refer to the following paragraph for
the proper setting of this switch.
AC VOLTAGE SELECTION
This unit operates on 110-120V AC. Two AC voltage
selector switches on the rear panelare set to the
voltage that prevails in the area to which the unit is
shipped. Before connecting the power cord to your
AC outlet, make sure that the setting position of this
switch matches your line voltage. If not, it must be set
to your voltage in accordance with the following direc-
tion
VOLTAGE 220V
SELECTOR | :
STAND BY Th
110V(/120V'
MAIN
110V
“A oy Le 220V
Move switch lever to match your line voltage with
a small screwdriver or other pointed tool
ENGLISH

Rear
Panel
Connections
%
Do
not
plug
the
AC
input
cord
into
the
AC
outlet
when
plugging
and
unplugging
connection
cords.
Make
connections
firmly
and
correctly
according
to
the
channel
(Left
and
Right)
and
polarity
(+
and
-).
If
not,
it
can
cause
loss
of
sound,
noise
or
damage
to
the
unit.
CASSETTE DECK
TUNER
(TX-7C)
CD PLAYER !
cb-7c)_ !
SPEAKERS
TURNTABLE
* - -- DIGI LINK CONNECTIONS

@ GND TERMINAL
To reduce hum noise, connect the turntable ground
lead to this terminal.
@ PHONO INPUT JACKS
Connect these jacks to the output cords of a turntable
with MM (Moving Magnet) type cartridge.
@® TUNER INPUT JACKS
Connect these jacks to the OUTPUT jacks of a
tuner.
@ CD INPUT JACKS
Connect these jacks to the OUTPUT jacks of a CD
player.
® AUX1/AUX2 INPUT JACKS
These extra jacks are provided for any source you
want to hear. An additional CD player, a TV, a VCR
or a turntable with ceramic cartridge, etc. can be
plugged into these jacks.
© TAPE 2 MONITOR JACKS
Connect the INPUT jacks to the LINE OUTPUT
jacks
of
a
cassette
deck
and
the
OUTPUT
jacks
to
the LINE INPUT jacks of that.
@ TAPE 1 JACKS
Connect
these
INPUT
and
OUTPUT
jacks
to
the
LINE
OUTPUT
and
LINE
INPUT
jacks
of
an
additional
cassette
deck.
SPEAKER TERMINALS
Connect the left(L) and right(R) speakers to the
corresponding speaker terminals. Make sure that the
positive(+)
and
negative(-)
terminals
on
the
speaker
are connected to the corresponding terminals on the
amplifier.
*
To
avoid
power
loss
in
the
speaker
cables,
the
wire
sizes
for
the
given
lengths
of
cable
are
recommended
as
follows.
Up to 12 meters : 0.75 mm diameter
Above 12 meters : 1.5 mm diameter
Above 30 meters : 2.5 mm diameter
* For safe amplifier operation, use the speakers with
impedance of 4 ohms to 16 ohms.
@ AC INPUT CORD
Plug this cord into AC outlet on the wall.
@ DIGI LINK JACK
Connect
this
jack
to
the
DIGI
LINK
jack
of
Sherwood
component
such
as
TX-7C,
DS-7C
or
CD-7C/R
to
control
the
connected
component
remotely
by
DIGI
LINK
system.
To
control
other
components,
connect
the
connected
component
to
the
component
to
be
controlled
referring
to
the
rear
panel
connection
diagram.
@) SWITCHED AC OUTLET
Power
supplied
through
this
outlet
is
turned
on
and
off by the POWER button of the amplifier.
NOTE:
The
equipment
whose
power
consumption
exceeds
100
watts
should
not
be
connected.
ENGLISH

Front
Panel
&
System
Remote
Controls
FRONT PANEL CONTROLS
SYSTEM REMOTE CONTROLS
@
mNUMERIC BUTTONS (0~9)
mw TUNER SECTION
» MEMORY BUTTON
+ PRESET SCAN BUTTON
¢ IF BAND BUTTON
+ RF MODE BUTTON
m CASSETTE DECK SECTION
| . REVERSE/FORWARD
PLAY BUTTONS (4,>)
+ REWIND/FAST FORWARD
BUTTONS (44, bP)
» OPEN/CLOSE/STOP
BUTTON (a/Il)
- RECORD/RECORD MUTING
BUTTON (@/0)
+ CD SYNCRO BUTTON
« REVERSE MODE BUTTON
. TAPE SIZE BUTTON
- COUNTER MODE BUTTON
» MEMORY BUTTOUN
+ COUNTER RESET BUTTON
REMOTE CONTROL UNIT RM-LF-7
mCD PLAYER SECTION
» PLAY/PAUSE BUTTON ( Pil)
¢ STOP/CLEAR BUTTON (ll)
¢ BACKWARD/FORWARD
SKIP BUTTONS (I, PP)
+ REPEAT BUTTONS (1/ALL, A< >B)
+ INTRO SCAN BUTTON
* RANDOM PLAY BUTTON
+» PROGRAM/REVIEW BUTTON
¢ EDIT BUTTON
» TAPE SIZE BUTTON
¢ TIME BUTTON
+ PEAK SEARCH BUTTON
SYSTEM REMOTE CONTROL UNIT

@ POWER INDICATOR
@ POWER BUTTON
Press
this
button
to
turn
the
power
on,
then
the
POWER indicator lights up.
Press
again
to
turn
the
power
off,
then
the
POWER
indicator goes off. .
*
The
power
of
Sherwood
components
such
as
TX-
7C,
DS-7C
and
CD-7C/R
connected
by
the
DIGI
Link
is
turned
on
or
off
together.
@ INPUT SELECTOR SWITCH/BUTTONS
Select
the
desired
program
source
with
the
INPUT
SELECTOR switch or buttons.
*
When
this
unit
is
connected
to
Sherwood
tuner
TX-7C
by
the
DIGI
LINK,
except
for
TAPE
2
MONITOR,
the
character
of
the
selected
program
source
is
shown
on
the
FL
display
of
TX-7C.
*
When
the
desired
program
source
is
selected
with
the
INPUT
SELECTOR
buttons
in
the
power
off
mode,
the
power
is
automatically
tuned
on
and
the
desired
program
source
is
selected.
@
TAPE
2
MONITOR
BUTTON/INDICATOR
When
performing
playback
or
recording
on
the
cassette
deck
connected
to
the
TAPE
2
MONITOR
jacks,
press
this
button
so
that
the
TAPE
2
MONITOR indicator lights up.
*
When
the
TAPE
2
MONITOR
indicator
lights
up,
you
can
listen
to
only
the
sound
of
the
TAPE
2
MONITOR
regardless
of
the
position
of
the
INPUT
SELECTOR
switch.
®
VOLUME
CONTROL/BUTTONS
(Up
and
DOWN)
Adjust
the
volume
to
a
comfortable
listening
level
with the VOLUME control or buttons.
© HEADPHONE JACK
Stereo
headphones
with
a
standard
1/4
inch
plug
can
be plugged into this jack for private listening.
@ REMOTE SENSOR
This
receives
the
signals
from
the
system
remote
control unit.
MUTE BUTTON
Press
this
button
to
temporarily
silence
the
sound.
Press
again
to
resume
the
previous
volume.
@® SYSTEM DISPLAY BUTTON
Each
time
this
button
is
pressed,
the
brightness
of
the
display
of
Sherwood
components
such
as
TX-
7C,
DS-7C
and
CD-7C/R
connected
by
the
DIGI
LINK
changes
together
as
follows.
eau muah
¢
For
details
about
other
function
buttons
on
the
system
remote
control
unit,
refer
to
the
operating
instructions
of
each
component
such
as
TX-7C,
DS-7C
or
CD-7C/R.
Mi SYSTEM REMOTE CONTROL
OPERATION RANGE
*
Use
the
system
remote
control
unit
within
a
range
of
about
7
meters
(23
feet)
and
angles
of
up
to
30
degrees
aiming
at the
remote
sensor.
x=
on
~d
Oo
z
TT)

i LOADING THE BATTERIES
¢ Remove the batteries when it is not used for a
long time.
* Do not use the rechargeable batteries (Ni-cd type).
1. Remove the cover.
2. Load two size "AA"(R6)
batteries matching the
polarity.
@ GENERAL CONNECTION
@Carefully strip about 10 mm of insulation and
twist the wire tip.
@ Loosen the knob and insert the wire.
@) Tighten the knob to fix the wire in place.
==
Twist the wire.
i CONNECTION USING THE BANANA
PLUGS
@
Solder
the
wire
tip
to
the
banana
plug
and
tighten
the
cover.
@
Tighten
the
knob
and
insert
the
plug
into
the
hole
on
the
knob.
Solder here
Banana plug

Operations
M@ LISTENING TO THE SOUND
1. Set the VOLUME control to minimum.
2. Press the POWER button to on.
3. Select the desired program source with the INPUT
SELECTOR switch or buttons or TAPE 2
MONITOR button.
When you want to listen to a music source other
than the TAPE 2 MONITOR, press the TAPE 2
MONITOR button to off so that the TAPE 2
MONITOR indicator goes off.
. Operate the selected component for playback.
. Adjust the volume to a comfortable listening level
with the VOLUME control or buttons.
. When answering the telephone, etc., press the
MUTE button to temporarily silence the sound.
Then the POWER indicator flickers. Press again
to resume the previous volume.
. For private listening, plug a 1/4 inch plug of the
headphone into the HEADPHONE jack.
¢ When the headphones are plugged, the sound
from the speakers is cut off.
Mm &
ON
i
@ RECORDING WITH A CASSETTE DECK
m RECORDING WITH THE TAPE 1
¢ When the TAPE 2 MONITOR indicator lights up,
press the TAPE 2 MONITOR button to off.
1. Select the program source to be recorded with the
INPUT SELECTOR switch or buttons.
2. Start recording on the cassette deck connected to
the TAPE 1.
3. Play the desired program source.
@ RECORDING WITH THE TAPE 2 MONITOR
1. Select the program source to be recorded with the
INPUT SELECTOR switch or buttons.
2. Start recording on the cassette deck connected to
the TAPE 2 MONITOR.
3. Play the desired program source.
¢ When the cassette deck connected to the TAPE 2
MONITOR is a 3 head cassette deck, press the
TAPE 2 MONITOR button to on to monitor the
recorded sound through the speakers during
recording on the TAPE 2 MONITOR cassette
deck.
M COPYING THE TAPES
. Select the TAPE 1 as a program source to be
recorded.
. Press the TAPE 2 MONITOR button so that the
TAPE 2 MONITOR indicator lights up.
. Start recording on the cassette deck connected to
the TAPE 2 MONITOR.
4. Play back on the cassette deck connected to the
TAPE 1.
* Copying from the TAPE 2 MONITOR to the
TAPE | is not possible.
—_
N
QO
ENGLISH

Troubleshooting
Guide
If
your
amplifier
should
not
perform
as
expected,
consult
the
table
below
to
see
if
the
problem
can
be
corrected
before
seeking
help
from
your
dealer
or
our
service
organization.
correctly.
PROBLEM
POSSIBLE
CAUSE
|
REMEDY
No
power
(the
POWER
indicator
_|
-
The
AC
input
cord
is
disconnected.
|
.
Connect
the
cord
securely.
does
not
light
up).
-
The
POWER
button
is
not
pressed
|
-
Press
the
POWER
button
to
ON.
No sound
- Speaker cables are disconnected.
+ Incorrect connections between the
- The volume is adjusted to
- The MUTE button is pressed to
- Incorrect selection of program
components.
minimum level.
ON.
source.
- Check the speaker connections.
- Make connections correctly.
- Adjust the volume.
- Press the MUTE button to cancel
the muting effect.
- Select the desired program source
correctly.
No recording
- Incorrect connections
+ Incorrect operation of the cassette
deck.
10
» Make connection correctly.
- Operate the cassette deck correctly.
re
|

Specifications
Continuous
Average
Power
Output
per
channel,
both
channel
driven.
TEC
standard,
20~20000
Hz,
at
8
ohms,
with
no
more
than
0.05
%
THD
-vrererrssseersteeseeseneesseeaeeeeeees
50
W
DIN
standard,
at
1
kHz,
8
ohms
<+++++eseeesereeereeeceseeeeeeeeseetees
62
W
DIN
standard,
at
1
KHz,
4
ohms
<+++++seseereereereeeteeseteeeeeeterees
93
W
IMD,
60
Hz
:
7
kHz
=4:
1
SMPTE,
at
50
W,
8
ohms
srrsrerrreeeeerees
0.003
%
THD,
at
1
kHz,
50
W,
8
ohms
-orseeesrseeessereeeetetseecestsseesseeeeseneans
0.006
%
Damping
Factor,
at
1
kHz,
8
ohms
-+++ssrseessteseessesessetreeseenetaeeress
120
Input
Sensitivity
for
50
W
output,
8
ohms,
1
kHz
PHONO
(MM)
-rresscesessseeeesesseesnneeecnnaeeesseerseeaseseeeneaeeray
25
mV
TUNER/CD/AUX/TAPE
oo
cececccrerescrecesesteeesesaneeeeaeeanesezees
160
mV
Phono
Input
Overload,
at
1
kHz,
with
no
more
than
0.7
%
THD
--trreesseececceescet
eee
eeeseteesesseneeeseeaes
180
mV
Signal
to
Noise
Ratio
(ref.
rated
power
output,
A
wtd)
PHONO
(MM)
crrsseeeeeseecseseeseesersaeecenaeecssaesrneeeseeesneeeens
16
dB
TUNER/CD/AUX/TAPE
coseseccecetereeeseeseeeeeseaeertseseeraneees
103
dB
Frequency
Response
PHONO
(MM),
RIAA
30~20,000
Hz
«+++rsesrerseeerssseressees
arenes
+
0.5
dB
TUNER/CD/AUX/TAPE,
at
1
W,
-3
UBeresersrseetreeseetereer
steer
5
Hz~280
kHz
Function
Crosstalk
AUX
to
CD,
at
1
KHz/10
KHz-+eeeseeesesseeeesetrereeseanereeeeeeeees
90
dB
@
GENERAL
Power
Requirement
Perrerrererrr
errr
reer
reer
rere
errr
reer
See
type
plate
at
the
rear
of
the
unit
Power
Consumption
--+++++ssssseereessresrssessescrssesssenesersennneerescenees
460
W
Dimensions
(W
XH
xX
|
D)
RCC
nes
440
x
100
x330
mm
(17-5/16
X
3-7/8
X
12-15/16
inches)
Weight
(Net)
cece
cece
cece
et
ner
eee
ceaee
tees
nessa
neesereeeeesresesssoasscesersereee
10.5
kg
(23.2
Ibs)
Note:
Specifications
and
design
subject
to
change
without
notice
for
improvements.
1]
ENGLISH