Pioneer A-445 User manual

Q) PIONEER’
The future of sound and vision.
Sooo
STEREO AMPLIFIER
AMPLIFICATEUR STEREO
STEREOVERSTARKER
OPENED sremoumeen A445
The illustration shows model A-445.
L'illustration montre le modéle A-445.
Die Abbilidung zeigt Modell A-445.
IMPORTANT
The lightning flash with arrowhead, within an
equilateral triangle, isintended to alert the user of the
presence of uninsulated “dangerous voltage” within the
product's enclosure that may be of sufficient magni-
tude to constitute a risk of electric shock to persons.
CAUTION
RISK OF ELECTRIC SHOCK
OO 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.
Operating Instructions
Mode d’emploi
Bedienungsanleitung
Gebruiksaanwijzing
Nederlands
The exclamation point within an equilateral triangle is
intended to alert the user of the presence of important
operating and maintenance (servicing) instructions in
the literature accompanying the appliance.

The
illustration
shows
model
A-445.
De
afbeelding
toont
model
A-445.
Model
A-335
is
not
equipped
@,
©
and
@.
Model
A-335
is
niet
uitgerust
met
de
bedieningsorganen
@,
en@.
Lillustration montre le modéle A-445.
Le modéle A-335 n'est pas équipé des éléments @, @ et @.
Modell A-335 ist nicht mit Bedienelementen @ , und @
[ Die Abbilidung zeigt Modell A-445.
ausgestattet.
INPUT SELECTOR,
co
DAT/TAPE) f>HOND
INE
a
TUNER TAPER, TUNER
2
u é
PHONO
SELECTOR
2
<ARE1112>

sO)
(lo),
SPEAKERS
<ARE1112>

Thank you for buying this Pioneer product. In some countries or regions, the shape of the power plug and
Please read through these operating instructions so you will know power outlet may sometimes differ from that shown in the
how to operate your unit properly. After you have finished reading drawings. However, the method of connecting and operating the
the instructions, keep the manual! in a safe place for future unit is the same.
reference.
CONTENTS
FEATURES tee tc ttt t ttre tere cece rere recesccerecsenne OPERATIONS eee eee eee ee ry
PANEL FACILITIES ee ey TROUBLESHOOTING eee ee ed
CONNECTIONS Beem emma ee er essreseseeeesessoeresesessens SPECIFICATIONS ee ee ee ey
FEATURES
¢ Drive capacity 100W + 100W/4 Q (DIN) matching to high power ¢ Non-Switching Circuit Type Il (A-445 only) is employed to
and low impedance type speaker system. realize high-quality sound with minimum distortion.
{model A-335...72W + 72W/4 Q (DIN)] ¢ Comes with a built-in phono equalizer which accepts MC
¢ The use of a DIRECT circuit assures high fidelity playback of cartridges. (A-445 only)
consistent frequency characteristics, accompanied by maximum ¢ Honeycomb Chassis
clarity. ¢ Honeycomb Heat Sink
¢ REC selector switch makes tape editing very simple.
4
<ARE1112>
E

PANEL FACILITIES
See page 2 for Panel Facilities.
[FRONT PANEL]
@ POWER switch/indicator
Press to turn power to the unit ON and OFF.
When the power is ON, the indicator lights.
@® SPEAKERS A selector switch
Use this switch to listen to the speaker systems connected to the
SPEAKERS A terminals.
ON (2):
Depressed position: Sound is heard from the speaker systems.
OFF (m):
Released position: No sound is heard from the speaker systems.
Set to this position when listening with headphones.
@ SPEAKERS B selector switch
Use this switch to listen to the speaker systems connected to the
SPEAKERS B terminals.
ON (=):
Depressed position: Sound is heard from the speaker systems.
OFF (m):
Released position: No sound is heard from the speaker systems.
Set to this position when listening with headphones.
@ REC SELECTOR switch
When this switch is set to a position other than SOURCE or OFF,
the equipment selected by the REC SELECTOR switch can be
recorded from, irrespective of the settings of the INPUT
SELECTOR and DIRECT switches.
TUNER:
To record from the equipment connected to TUNER terminals.
CD:
To record from the equipment connected to CD terminals.
OFF:
In this position, nothing from the REC terminals of DAT/TAPE 1
and TAPE 2 is output. Set to this position when not recording; the
tape deck will be disconnected, improving sound quality.
SOURCE:
To record from the equipment selected by the INPUT SELECTOR
switch.
TAPE:
12
To record (copy) from the tape deck of DAT/TAPE 1 terminals, to
the tape deck of TAPE 2 terminais.
21
To record (copy) from the tape deck of TAPE 2 terminals, to the
tape deck of DAT/TAPE 1 terminals.
© INPUT SELECTOR switch
Use to select the playback source.
LINE:
For playback with a component connected to the LINE terminals.
TUNER:
For AM or FM broadcast reception with a tuner.
PHONO:
For record playback with a turntable.
CD:
For compact disc playback with a CD player.
DAT/TAPE 1:
For playback with a tape deck or digital audio tape deck connected
to the DAT/TAPE 1 terminals.
TAPE 2:
For playback with a tape deck connected to the TAPE 2 terminals.
© VOLUME CONTROL
Use to adjust the volume level.
NOTE:
This unit is equipped with a circuit that attenuates the LOUDNESS
and TONE effect as volume is turned up.
@ PHONO SELECTOR switch (A-445 only)
Set in accordance with the type of cartridge used with your
turntable.
MM (m):
Set to this position when using a moving magnet cartridge, or a
moving coil cartridge with a high output of 1 mV or more.
MC (=):
Set to this position when using a moving coil cartridge.
MUTING switch (A-445 only)
Use to temporarily cut sound volume.
ON (=):
The sound is cut off.
OFF (m):
The sound will return to its previous volume.
© DIRECT switch/indicator
Use this switch/indicator when you do not wish to pass the output
from input terminal equipment through the various frequency
adjusting circuits (SUBSONIC, BASS, TREBLE, BALANCE,
LOUDNESS) and adaptor terminals (ADAPTOR).
ON:
The indicator lights: The signals input through the input terminals
are reproduced without passing through the various frequency
adjusting circuits. This results in flat, pure sound which is a more
faithful reproduction of the input source.
OFF:
The indicator goes out: The signal passes through the various
frequency adjusting circuits.
5
<ARE1112>
E

PANEL FACILITIES
@ LOUDNESS switch/indicator
Use when listening at low voiume levels.
ON:
The indicator lights: Boosts low and high frequencies to give added
punch to playback even at low volume levels.
OFF:
The indicator goes off: Should normally be left in this position.
NOTE:
This switch does not operate when the DIRECT switch is in the ON
position.
@ SUBSONIC filter switch/indicator (A-445 only)
Use this switch when playing records with coarse grooves.
OFF:
Released position; leave in this position for normal playback.
ON:
Depressed position (the indicator lights). In this position,
frequencies of 17 Hz and below are cut, eliminating
super-low-frequency noise caused by coarse record grooves, and
thus helping prevent sound distortion.
NOTE:
This switch does not operate when the DIRECT switch is in the ON
position.
@ BALANCE control
Should normally be left in the center position. Adjust the balance if
the sound is louder from one of the speakers. If the right side is
louder, turn toward the Lileft) position and if the left side is louder,
turn toward the R(right) position.
NOTE:
This control does not operate when the DIRECT switch is in the
ON position.
@ TREBLE tone control
Use to adjust the high-frequency tone. The center position is the
flat (normal) position. When turned to the right, high-frequency
tones are emphasized; when turned to the left, high-frequency
tones are de-emphasized.
NOTE:
¢ This control does not operate when the DIRECT switch is in the
ON position.
e At volume levels lower than “4", the set tone control effect is
obtained.
At volume levels higher than “°4", the effect becomes
increasingly weaker.
6
<ARE1112>
E
@ BASS tone control
Use to adjust the low-frequency tone. The center position is the flat
(normal) position. When turned to the right, low-frequency tones
are emphasized; when turned to the left, low-frequency tones are
de-emphasized.
NOTE:
© This contro! does not operate when the DIRECT switch is in the
ON position.
« At volume levels lower than “4”, the set tone control effect is
obtained.
At volume levels higher than “4”, the effect becomes
increasingly weaker.
® PHONES jack
When using headphones, insert the plug into this jack.
[REAR PANEL]
@ PHONO terminals.
@ LINE terminals.
@ ADAPTOR OUT terminals.
@ ADAPTOR IN terminals.
@ DAT/TAPE 1 REC terminals.
@ DAT/TAPE 1 PLAY terminals.
@
SPEAKERS
B
terminals
(right
channel).
@
SPEAKERS
B
terminals
(left
channel).
@
Power
cord.
Connect this cord to an AC wall socket, or the AC outlet of an
audio timer.
@ SPEAKERS A terminals (left channel).
@ SPEAKERS A terminals (right channel).
@ TAPE 2 PLAY terminals.
@ TAPE 2 REC terminals.
@ Shorting bars.
@ CD terminals.
@ TUNER terminals.
@ Turntable ground terminal (GND).

CONNECTIONS
See page 3 for Connections.
@ CD player.
@ Adaptor component (graphic equalizer).
@ DAT/Tape decks.
@ Speaker system B (R).
® Speaker system B (L).
© Speaker system A (R).
@ Speaker system A (L).
Turntable.
© LD player, VCR etc..
@ Tuner
@ To an AC wall socket.
CONNECTING THE SPEAKER CORDS
1. Strip off the vinyl covering and twist the tip of
the wire core.
®
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.
NO
>
Yy
NOTE:
Do not allow the wire core to protrude and touch other terminals or
wires. If the cores of differing wires touch, damage may be caused
to your amplifier and/or speaker systems.
Speaker Impedance
When speaker systems are connected to only the SPEAKERS A or
SPEAKERS 8 terminals, such speakers should have rated
impedance in the range of 4-16Q.
When speakers are connected to both the A and B terminals, they
should have a rated impedance in the range of 8- 32Q.
CONNECTING THE INPUT/OUTPUT CORDS
Connect the white plug to the L (left) side, and the red plug to the R
(right) side. Be sure to push the plugs in securely.
Left channel
CO
The INPUT/OUTPUT jacks of this unit are dull tinplated, aiming at
high audio quality.
TO USE THE COMPONENT CONNECTED TO
THE ADAPTOR TERMINALS
1. Set the POWER switch to OFF.
2. Remove the two shorting bars from the
adaptor terminals.
White plug
Right channel
Shorting bars.
tT
NOTE:
Remove the shorting bars before connecting an equalizer to these
terminals. Always keep the bars inserted while the terminals are
not in use, and take care not to lose them.
7
<ARE1112>
E

OPERATIONS
BEFORE BEGINNING OPERATIONS
Set the controls and switches as follows: See page 2.
1. Set the POWER switch © to ON.
2. Press the SPEAKERS A selector switch @,
SPEAKERS B selector switch © , or both
switches.
3. Set the BALANCE control @ to the center
position.
4. Set the DIRECT switch © to OFF.
PLAYBACK PROCEDURES
1. Set the INPUT SELECTOR switch © to the
desired playback source.
¢ For playback with the equipment connected to the LINE
terminals: Set to [LINE].
¢ For reception of an AM/FM broadcast: Set to [TUNER].
¢ For playback of a record: Set to [PHONO].
Set the PHONO SELECTOR switch @ to MM (lL) or MC (=)
according to the type of cartridge being used. (A-445 only)
¢ For playback of a compact disc: Set to [CD]
¢ For playback of a tape: Set to [DAT/TAPE 1] or [TAPE 2].
2. Operate the equipment to begin playback.
3. Adjust playback volume with the VOLUME
CONTROL © on this unit.
RECORDING TAPES
1. Select the recording equipment with the REC
SELECTOR switch @.
e¢ When set to SOURCE, the signals from the device connected to
the terminals of the selected input are recorded. (To record
signals from the device connected to the PHONO or LINE
terminals, for instance set the REC SELECTOR switch to
SOURCE and set the INPUT SELECTOR switch to PHONO or
LINE accordingly.)
« Recording is impossible when the switch is set to OFF.
NOTE:
‘When REC SELECTOR switch is set to a position other than
SOURCE or OFF, the equipment selected by the REC SELECTOR
switch can be recorded from, irrespective of the settings of the
INPUT SELECTOR and DIRECT switches.
2. Begin recording by operating the recording
equipment. ,
Refer to the operating instructions for your tape deck for proper
operating procedures.
MONITORING WHILE RECORDING
On a 3-head tape deck, sound can be concurrently heard while
recording on tape. This operation of checking the sound quality
and recording level is called “monitoring.” For monitoring, the
INPUT SELECTOR switch of this unit must be set to the tape deck
on which recording is being done.
« When recording with the tape deck connected to the DAT/TAPE
1 terminals: Set to DAT/TAPE 1.
e When recording with the tape deck connected to the TAPE 2
terminals: Set to TAPE 2.
8
<ARE1112>
E
NOTE:
When recording from the PHONO or LINE source, recording
monitor is not possible.
COPYING TAPES
When two decks are used (or when using double cassette deck),
you can record the sounds from one deck onto the other.
Application examples:
¢ To make a tape copy with contents identical to the original tape.
¢ To edit a recording of an FM broadcast in order to cut out
unwanted commercials, recording only desired material onto
another tape.
When using two tape decks
1. Load tapes for playback (pre-recorded tape)
and recording (blank tape) into the respective
tape decks.
2. Select the copying direction with the REC
SELECTOR switch @.
e When copying from the tape deck of the DAT/TAPE 1 terminals
to the tape deck of the TAPE 2 terminals: Set to 1 > 2.
¢ When copying from the tape deck of the TAPE 2 terminals to
the tape deck of the DAT/TAPE 1 terminals: Set to 2 > 1.
NOTE:
The tape input selected with the REC SELECTOR switch can be
copied, regardless of the settings of INPUT SELECTOR and
DIRECT switches.
3. Operate the tape decks to begin copying.
Set the tape deck with the original (playback) tape to the playback
mode, and set the tape deck with the blank tape to the recording
mode.
Playback using a graphic equalizer
The sound of all sources can be finely adjusted with a graphic
equalizer connected to the ADAPTOR terminals.
However, the graphic equalizer is bypassed when the DIRECT
switch is ON.
NOTE:
Be sure to perform this operation with the adaptor component
power switch in the ON position. Even when not using the adaptor
component, its power switch must be left ON. If the adaptor
component is switched OFF, no sound will be produced, or the
playback sound will be distorted.

TROUBLESHOOTING
Incorrect operations are often mistaken for trouble and malfunctions. If you think that there is something wrong with this component, check the
points below. Sometimes the trouble may lie in another component. Investigate the other components and electrical appliances being used.
If the trouble cannot be rectified even after exercising the checks listed below, ask your nearest PIONEER authorized service center or your
dealer to carry out repair work.
Symptom
Probable Cause
No power supplied to unit e
e
No sound
No sound from one speaker
Can't record tapes
Power plug is disconnected from outlet.
The component power plug has been plugged
into another component power outlet (e.g.
timer, etc.), but power to that unit is
disconnected.
Connecting cords are disconnected from
terminals, or connected incorrectly.
Terminals, or connecting cords pin plugs are
dirty.
The INPUT SELECTOR switch is not set to the
desired input source.
Operation of other components is incorrect.
Both SPEAKERS selector switches are set to
OFF.
MUTING switch is in the ON position (=).
Connecting cords or speaker cords are
disconnected on that side.
BALANCE control is set to one side.
The position of the REC SELECTOR switch is
incorrect.
Connections are incorrect.
Operation of tape deck is incorrect.
Can't perform tape copying
The position of the REC SELECTOR switch is
incorrect.
Operation of tape decks is incorrect.
Insert plug securely into outlet.
Turn on power to the other component.
Connect securely.
Clean terminals and plugs.
Set the switch correctly (PHONO, TUNER,
CD, LINE, DAT/TAPE 1, TAPE 2).
Consult the operating instructions for the other
components.
Set one switch or both switches to ON.
Set the MUTING switch to the OFF position
(M2).
Connect securely.
Set BALANCE contro! to center position.
Set switch _ correctly section
RECORDING TAPES).
Reconnect properly.
Consult the operating instructions for the tape
deck.
(See
Set switch correctly (See section COPYING
TAPES).
Consult the operating instructions for the tape
decks.
9
<ARE1112>
E

SPECIFICATIONS
[A-445]
Amplifier Section
Continuous power output (both channels driven at 20 Hz to 20
kHz) **
T.H.D. 0.008%, 8 QQ neve cc ncnccccrcnscesscsene 60W + 60W *
T.H.D. 0.02%, 4 Q ee ee ey 80W + 80W *
DIN Continuous power output (both channels driven at 1 kHz)
T.H.D. 1.0%, 8 Q Terre eee eee eee ee TOW + TOW
T.H.D. 1.0%, 4 Q errr eee eee eee ee ee) 100W + 100W
Dynamic power output (on EIA dynamic test signal)
82/4 Q /2 GQ cc cecenarennecsvccssnsscore 75W/110W/150W
Total harmonic distortion ** :
20 Hz to 20 kHz, 6OW, 8 Q ee ee ee ry 0.008% *
20 Hz to 20 kHz, 80W, 4 Q ee ee 0.02% *
Input sensitivity/impedance
PHONO (MM) <eseer sere cere sete e eee eee renee 2.5 mV/50 kQ
PHONO (MC) mercer errr noes nen esesessace 0.2 mvV/100 Q
CD, TUNER, LINE, TAPE::--++--++++sseeee 150 mV/40 kQ
PHONO overload level
1 kHz, T.H.D. 0.008% (MM/MC) «--++++++-+>- 150 mV/12 mV
Output level/impedance
TAPE REC, ADAPTOR OUT::-++-++-+++++> 150 mV/2.2 kQ
Frequency response
PHONO (MM), 20 Hz to 20 KHz «+--+ ser rete eee +0.3 dB
PHONO (MC), 20 Hz to 20 KHz--+-+++srrerr reer +0.5 dB
CD, TUNER, LINE, TAPE, 5Hz to 100 kHz-----+--:- 2 dB*
10
<ARE1112>
E
Tone control (volume control set at -30 dB position)
BASS
cocccccceee
reece
cence
cece
eeeeenens
+
8
dB
(100
Hz)
TREBLE + +++ crete crete cere teeter reeeee + 8 dB (10 kHz)
Loudness contour (volume control set at —30 dB position)
ere eee eee +5dB (100 Hz)/+3 dB (10 kHz)
Filter (SUBSONIC)-+<+-+srer reteset er tceees 17 Hz (12 dB/oct.)
Signal-to-Noise ratio (IHF short circuit, A network)
PHONO (MM, 5 mV input/MC, 0.5 mV input)
cee e tence nee erent ee enn tennessee eeenennes 93 dB/74 dB *
CD, TUNER, LINE, TAPE:+++--+srserersteereeeeee 107 dB*
Signal-to-Noise ratio (DIN, continuous power/50 mW)
PHONO (MM) <+sesseesre steers settee reese 74 dB/63 dB *
CD, TUNER, LINE, TAPE----+++++ssesterress 87 dB/65 dB *
Power Supply/Miscellaneous
Power requirements --++ssrtttsetetee a.c. 220 Volts ~, 50/60 Hz
Power consumption errr re ee ee ee ee ey 550W
Dimensions «+++ --+++++rseeeeee 420(W) x 348(D) x 126(H) mm
Weight (without package) --++++ssrrrte eters eters eter sees 8.1 kg
Accessories
Operating Instructions «+s teeter te teeter tence eee esetnee 1
NOTE:
Specifications and design subject to possible modification without
notice, due to improvements.
* Measured with the DIRECT switch set to ON.
** Measured by Audio Spectrum Analyzer.