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STEREO AMPLIFIER
A-307R
A-209R
Operating Instructions
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Thank you for buying this PIONEER product.
Please read through these operating instructions so you will
know how to operate your model properly. After you have
finished reading the instructions, put them away in a safe
place for future reference.
In some countries or regions, the shape of the power plug and
power outlet may sometimes differ from that shown in the
explanatory drawings. However, the method of connecting
and operating the unit is the same.
WARNING: TO PREVENT FIRE OR SHOCK HAZARD,
DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOIS-
TURE.
This product complies with the Low Voltage Directive (73/
23/EEC), EMC Directives (89/336/EEC, 92/31/EEC) and CE
Marking Directive (93/68/EEC).
IMPORTANT
The lightning flash with arrowhead symbol, within an
equilateral triangle, is intended to alert the user to the
presence of uninsulated "dangerous voltage" within the
product's enclosure that may be of sufficient magnitude
to constitute a risk of electric shock to persons.
CAUTION
RISK OF ELECTRIC SHOCK
DO NOT OPEN
CAUTION:
TO PREVENT THE RISK OF ELECTRIC SHOCK, DO NOT
REMOVE COVER (OR BACK). NO USER-SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.
IMPORTANT
FOR USE IN THE UNITED
KINGDOM
The wires in this mains lead are coloured in
accordance with the following code :
Blue
: Neutral
Brown : Live
If the plug provided is unsuitable for your socket
outlets, the plug must be cut off and a suitable plug
fitted.
The cut-off plug should be disposed of and must not be
inserted into any 13 amp socket as this can result in electric
shock. The plug or adapter or the distribution panel should
be provided with a 5 amp fuse. As the colours of the wires
in the mains lead of this appliance may not correspond with
the coloured markings identifying the terminals in your plug,
proceed as follows :
The wire which is coloured blue must be connected to the
terminal which is marked with the letter N or coloured black.
The wire which is coloured brown must be connected
to the terminal which is marked with the letter L or coloured
red.
Do not connect either wire to the earth terminal of a
three-pin plug.
NOTE
After replacing or changing a fuse, the fuse cover in the
plug must be replaced with a fuse cover which corre-
sponds to the colour of the insert in the base of the plug
or the word that is embossed on the base of the plug, and
the appliance must not be used without a fuse cover. If
lost, replacement fuse covers can be obtained from your
dealer.
Only 5 A fuses approved by B.S.I. or A.S.T.A to B.S.
1362 should be used.
POWER-CORD CAUTION
Handle the power cord by the plug. Do not pull out the plug by
tugging the cord and never touch the power cord when your
hands are wet as this could cause a short circuit or electric
shock. Do not place the unit, a piece of furniture, etc., on the
power cord, or pinch the cord. Never make a knot in the cord
or tie it with other cords. The power cords should be routed
such that they are not likely to be stepped on. A damaged
power cord can cause fire or give you an electrical shock.
Check the power cord once in a while. When you find it
damaged, ask your nearest PIONEER authorized service
center or your dealer for a replacement.
MAINTENANCE OF EXTERNAL SUR-
FACES
÷ Use a polishing cloth or dry cloth to wipe off dust and dirt.
÷ When the surfaces are dirty, wipe with a soft cloth dipped
in some neutral cleanser diluted five or six times with
water, and wrung out well, and then wipe again with a dry
cloth. Do not use furniture wax or cleaners.
÷ Never use thinners, benzine, insecticide sprays or other
chemicals on or near this unit, since these will corrode the
surfaces.
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CONTENTS
FEATURES ......................................................................... 3
INSTALLATION .................................................................. 3
CONNECTIONS ................................................................. 4
PANEL FACILITIES ............................................................ 6
FEATURES
7 Direct Energy MOS Power Amp(on the A-307R)
Pioneer introduces amp circuitry featuring Direct Energy
MOS FET devices for high performance. Together with
Pioneer's original Wide Range Linear Circuit technology,
this helps achieve reducing power consumption, while
maintaining the power of current models.
In terms of performance, it contributes to flat damping
factor characteristics across the audio spectrum, and im-
proved power linearity.
7 Advanced Direct Energy MOS Power Amp(on the
A-209R)
Pioneer incorporates highest quality amp circuitry featur-
ing Advanced Direct Energy MOS FET devices which can
achieve higher performance. Together with Pioneer’s origi-
nal Wide Range Linear Circuit technology they reduce
power consumption while maintaining the power output of
current models.
In terms of performance, this technology contributes to flat
damping factor characteristics across the audio spectrum.
It also allows a wide range and especially ultra␣ high fre-
quencies to be reproduced more accurately and improves
power linearity.
OPERATIONS .................................................................... 9
REMOTE CONTROL ........................................................ 10
TROUBLESHOOTING ...................................................... 11
SPECIFICATIONS ............................................................. 12
7 Stabilizer (on the A-209R only)
Transformer stabilizer and stabilizer frame (attached to
chassis) deliver powerful sound.
7 Low power consumption design
7 High-power Output:
A-307R ............................. 80 W + 80 W/4 (DIN)
55 W + 55 W/8 (DIN)
A-209R ............................. 60 W + 60 W/4 (DIN)
45 W + 45 W/8 (DIN)
7 Wide-Range Linear Circuit
This new current feedback circuit assures improved oper-
ating stability for flat output impedance and stable driving
of speakers across the full range of frequencies.
7 Silent microprocessor system
INSTALLATION
LOCATION
Install the unit in a well ventilated location where it
will not be exposed to high temperature or humidity.
Do not install the unit in a location which is exposed to direct
rays of the sun, or near hot appliances or radiators. Excessive
heat can adversely affect the cabinet and internal compo-
nents. Installation of the unit in a damp or dusty environment
may also result in a malfunction or an accident. (Avoid instal-
lation near cookers etc., where the unit may be exposed to oily
smoke, steam or heat.)
Do not install the unit on a tottered stand, nor on an unstable
or inclined surface.
VENTILATION
÷ When installing this unit, make sure to leave space around
the unit for ventilation to improve heat radiation (at least 60
cm at top, 10 cm at rear, and 30 cm at each side). If not
enough space is provided between the unit and walls or
other equipment, heat will build up inside, interfering with
performance or causing malfunctions.
÷ Do not place on a thick carpet, bed, sofa or fabric having a
thick pile. Do not cover with fabric or other covering.
Anything that blocks ventilation will cause internal tem-
perature to rise, which may lead to breakdown or fire
hazard.
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CONNECTIONS
Before making or changing the connections, switch off the power switch.
CD player
Cassette deck/
CD recorder/
MD recorder
Adaptor component
Cassette deck (graphic equalizer, etc.) Speaker system B
CD
MINIDISC
OUT
L
R
L
R
REC
PLAY
L
R
L
R
RL
REC
PLAY
L
R
L
R
RL
IN OUT
L
R
L
R
RL
Right (R)
Left (L)
L
R
RL RL RL LRª
··
ª
SPEAKERS
RB L
SIGNAL
GND
PHONO TUNER
CD
L
LINE
TAPE 1/MD
REC
PLAY
TAPE 2 MONITOR
REC
PLAY
L
R
IN
R
IN IN
IN
OUT
IN
OUT
IN
ª ·· ª
RA L
CONTROL
OUT
AC INLET
L
R L See page 5.
L
R
R
ª
··
ª
To an AC wall socket.
L
R
L
R
OUT
L
R
Left (L)
L
R
AUDIO OUT
Right (R)
FM-AM
DVD
Turntable
Tuner DVD player, VCR, etc. Speaker system A
CONNECTING THE SPEAKER CORDS
1. Strip off the vinyl covering and twist the tip of the
wire core. 10mm
NOTE:
Do not allow any of the cord conductors to protrude from the
terminals or touch any other conductors. Malfunctioning or
breakdowns may occur when conductors come into contact
with each other.
Twist the wire core.
2. Loosen the knob and insert the wire core into the
terminal hole.
3. Tighten the knob to fix the wire core in place.
\2
1
3
Speaker Impedance
When speaker systems are connected to only SPEAKERS A
or SPEAKERS B terminals, such speakers should have rated
impedance in the range of 4–16 .
When speaker are connected to both A and B terminals, they
should have a rated impedance in the range of 8 –32 .
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CONNECTING THE INPUT/OUTPUT
CORDS
Connect the white plug to the L (left) channel, and the red plug
to the R (right) channel. Be sure to push the plugs securely.
Left channel
White plug
L
Right channel
R
Red plug
CONNECTIONS
LOADING BATTERIES
Open the battery compartment cover on the back of the
remote control unit.
Insert size AA/R6P dry cell batteries into the battery compart-
ment in accordance with the indications (ª,·) inside the
compartment.
Close the cover of the battery case.
Incorrect use of batteries may lead to leakage or
rupture. Always be sure to follow these guidelines:
1. Always insert batteries into the battery compartment cor-
rectly matching the positive ª and the negative · polari-
ties as indicated inside the compartment.
2. Never mix new and used batteries.
3. Batteries of the same size may have different voltages
depending on their type. Do not mix different types of
batteries.
REMOTE CONTROL CORD CONNEC-
TIONS
By interconnecting the CONTROL jacks of Pioneer units with
the Î mark, the entire system can be operated with this
remote control unit, although some of the units (AM/FM
tuner, CD player, cassette deck, etc.) may not be equipped
with remote sensors. The entire system can be operated by
a remote control unit by connecting PIONEER stereo compo-
nents to each other using the control input (CONTROL IN) jack
on each component. Use the remote control cord supplied
with the respective unit for the connection. An example is
shown in the figure. As long as you connect “OUT” to “IN”,
the connecting sequence is arbitrary. When a unit has only an
“IN” connector, however, connect it last.
NOTE:
When the POWER switch is set to OFF, the components
connected to the CONTROL OUT jack can not be operated
with the remote control unit.
AM/FM
tuner
CD player
Remote
control unit
Cassette
deck
A-307R
/A-209R
CONTROL
OUT
IN
CONTROL
OUT
IN
CONTROL
OUT
IN
CONTROL
OUT
·
ª
ª
·
RANGE OF REMOTE CONTROL
When the remote control unit is pointed at the remote sensor
window on the stereo amplifier and any of its buttons is
pressed, the unit and other components can be operated by
remote control.
Distance : Within a range of approx. 7 meters from the unit’s
remote control sensor window.
Angle
: Within approx. 30 degrees from the center of the
unit’s remote control sensor window.
Remote control will not be possible if there is an
obstacle between the remote control unit itself
and the unit’s remote control sensor window.
÷ The accessory remote control unit can be used to control
some functions of other Pioneer cassette decks, CD play-
ers and tuners (only those Pioneer components bearing
the Î mark).
Remote control
sensor window
30
30
7m
5