Pioneer SA-708 User manual

STEREO
AMPLIFIER
©)
PIONEER’
A=708
OPERATING INSTRUCTIONS
HA, HR
S,S/G
The specifications of this model differ according to the
shipment destination.
e For U.K. and Australia (HR stamped on packing case):
Power line voltage is 240 volts. A DIN socket is provided
on the rear panel.
@ For mainland Europe (HA stamped on packing case):
Power line voltage is 220 volts. AC convenience outlets
are provided on the rear panel, and a DIN socket is pro-
vided on the rear panel.
e For destinations excluding above (S or S/G stamped on
packing case): A 4-point (110V/120V/220V/240V) volt-
age selector switch is provided on the rear panel, and AC
convenience outlets are provided on the rear panel.
NOTE:
Models for the U.K. and Australia (HR) and mainland
Europe (HA) have their power line voltages set in accord-
ance with their destination before they are shipped from
the factory. The voltage which has thus been set is indi-
cated on the rear panel of the main unit.
Before switching on the power, make absolutely sure that
the voltage tallies with the value used in your area. If it
does not tally or if you move to another area with a dif-
ferent voltage (such from 220V to 240V) or vice versa, get
in touch with your nearest authorized Pioneer Service
Center or Service Station or, alternatively, call for a quali-
fied electrician to set the voltage properly.
IMPORTANT
To
prevent
electric
shock,
do
not
remove
cover,
No
user
FOR
USE
IN
UNITED
KINGDOM
AND
serviceable
parts
inside,
refer
servicing
to
qualified
serv-
AUSTRALIA
|
sce
DETTE!
or
CAUTION
240V:
Mains
supply
voltage
is
facto-
Always
disconnect
all
the
equipment
from
the
mains
:
supply
when
disconnecting
the
signal
leads.
The
power
ry
adjusted
at
240V.
cord
should
be
connected
last,
make
Sur:
that
the
power
FOR
USE
IN
UNITED
KINGDOM
switch
is
off.
First,
insert
the
female
appliance
connector
: 3 P
:
‘
of
the
mains
cord
into
the
AC
INLET,
then
plug
the
The
wires
in
this
mains
lead
are
coloured
in
accordance
cord
to
the
wall
socket.
Be
sure
that
the
appliance
con-
WHEL
RE
ee
—
Velloips
“Barth
nector
is
fully
inserted
into
the
AC
INLET.
pe
ie
Sean
rae
al
Unplug
the
set
from
the
wall
socket
when
it
is
not
to
be
aes
ao
Brown:
Live
used
for
an
extended
period
of
time.
. : ; :
f
DEnOr
OEE
As
the
colours
of
the
wires
in
the
mains
lead
of
this
ap-
paratus
may
not
correspond
with
the
coloured
marking
WARNING
identifying
the
terminals
in
your
plug
proceed
as
fol-
lows.
THIS
APPARATUS
MUST
BE
EARTHED.
The
wire
which
is
coloured
green-and-yellow
must
be
connected to the terminal which is marked with the let-
ter E or with the safety earth symbol + or coloured
:
OR
YOUR
SAFETY
green
or
green-and-yellow.
1,
Insert
this
plug
only
into
effectively
earthed
three-pin
The
wire
which
is
coloured
blue
must
be
connected
to
plug-socket
outlet.
the
terminal
which
is
marked
with
the
letter
N
or
colour-
2.
If
any
doubt
exists
regarding
the
earthing,
consult
a
ed
black.
qualified
electrician.
The
wire
which
is
coloured
brown
must
be
connected
to
3.
Extension
cords,
if
used,
must
be
three-core
correctly
the
terminal
which
is
marked
with
the
letter
L
or
colour-
wired.
ed
red.
a
eg

a a a a a a ee ee ee
NTS
MCAUUICS 2.24 as ow. ea Ree whe wad O24 Sa
Stereo System Composition ..............
Installation Precautions................6.
Rear Panel Facilities ..................-.-
CONnKECTIONS o:.2.ae hbk, SESS EASES
FEATURES
DC Power Amplifier with High S/N and Low Dis-
tortion
This is a DC configuration power amplifier which uses
superlinear transistors with excellent high-range switching
characteristics for the power transistors. The result is a
Continuous Power Output of 65 watts” per
channel, min., at 8 ohms from 20 Hertz to
20,000 Hertz with no more than 0.02 %
total harmonic distortion or 65 watts per
channel at 4 ohms from 20 Hertz to 20,000
Hertz with no more than 0.03% _ total
harmonic distortion.
The power amplifier circuit board features a heat sink
partition to separate the small-signal class A amplifier sec-
tion and the output stage class B amplifier section and
power supplies. This prevents interference between the
small-signal and large-signal sections. Furthermore, the heat
sink is lightweight and has a T-shaped “skyve’’ construction
for an effective heat dissipation capability. This feature
keeps the rise in the temperature down and it ensures that a
high-quality sound is provided.
Equalizer Amplifier with a High S/N and Low Dis-
torsion .
The 3-stage direct-coupling with three low-noise tran-
sistors is a design which brings out the best in the final-stage
emitter follower equalizer amplifier. All the various com-
ponents that are used for the equalizer elements help pro-
vide a PHONO signal-to-noise ratio of 86dB (IHF-A), an
RIAA deviation of +0.2dB (20Hz to 20,000Hz), and a
phono overload level of 200mV (1kHz, T.H.D 0.01%) for
the high-fidelity re-creation of sound from records.
Highly Reliable Protection Circuits
There are protection circuits which serve to detect over-
load and the mid-point voltage in the power amplifier stage.
When the speaker terminals are shorted or something unex-
pected happens that causes the mid-point voltage-to under-
go an abnormat change, the circuits use a relay to immedi-
ately cut the power amplifier off from the speakers. They
- also function as a muting circuit when the power switch is
Operations :.4.25 465.665 Cee ee eee TOS pes
Using the Tape Decks ..................
Conditions Frequently Mistaken for
Malfunctions os sind wai ones eee ae
Specifications ...........2+.0000-
Schematic Diagram ...............
set to the ON and OFF positions to suppress the undesira-
ble noise which is generated and to safeguard the speakers
from damage.
Power Level Indicator with Fluorescent Display
Used for the power level indicator are two fluorescent
displays (one for the left channel and the other for the
right) which feature a very fast response speed to indicate
the power level virtually instantaneously. This indicator is
composed of highly dependable ICs and its logarithmic
compression and drive circuits make it possible for a wide
range of power levels from 0.003W right up to the maxi-
mum levels to be indicated for both the left and right chan-
nels independently without switching knobs or levers.
Rich Store of Accessory Functions
e@ The phono interference filter switch serves to reduce the
radio-frequency interference from external electronic or
electrical appliances or produces during record play.
e The subsonic filter switch serves to cut out the low-
frequency noise, which is harmful to your speakers, ge-
nerated by record warp.
e@ The loudness switch compensates for the deficiencies of
the human ear with respect to low-frequency and high-
frequency sound and it is also useful when listening to
programs at night, for instance, with the sound turned
down.
e@ The tone switch is a convenient control for checking the
efficacy of the two tone controls.
e The function indicators tell you the program source at a
glance.
e
The
amplifier
is
provided
with
two
sets
(A
and
B)
of
speaker
terminals
so
that
you
can
connect
two
sets
of
speaker
systems.
This
means
that
you
can
listen
to
the
program
on
one
set
in
another
room.
@ The amplifier is also equipped with two sets of tape deck
jacks for connecting two tape decks. The tape monitor
switches can be used to dub tapes from TAPE 1 deck to
TAPE 2 deck and for simple tape editing.
e MODE switch can be used to select between stereo and
mono modes. It is effective in adjusting the balance be-
tween the left and right channels.
e MUTING switch can be used to momentarily reduce the
volume level, or alternatively, you can use it to adjust
the volume subtly in combination with the volume con-
trol knob.
* Measured pursuant to the Federanl Trade Commision’s
Trade Regulation rule on Power Output Claims for
Amplifiers.

PIONEER
STEREO SYSTEM COMPOSITION
Shelves Installing the stereo amplifier
Make sure that the shelves are stable @ Choose a: location where the ‘heat
and fully capable of supporting heavy will be dissipated easily.
HUN ue ail
é aor l 3) 6
: ;
L_
i
Turntable ——
eSet the turntable so that it is : Tuner
not affected by vibration. | <1 \ eDo not make the connecting
eKeep the dust cover closed as 8 88 O i cords longer than necessary.
much as possible. a! e@ Set the antenna in the direction
Audio
rack
iGo)
best
suited
for
reception.
e Stack the records up for storage NOY, Use an external antenna for FM
— do not lay them fiat. Pil@@kt—Hl woe d]— reception.
e e-recorded 7 |
eDo not expose pre-recor 1 Tape deck
eMake sure you clamp the reels
tapes near the stereo system for rs as co
Se a ae
when using the tape deck.
long-periods of time. tg 4
e Do not store the tapes anywhere CAs
near
a
magnetic
field.
Uusen
=
The sound quality some- cyto ets —- » riick aurtaine
nae
esti
onde
|i
|-—
|
<
e@
Use
curtains
to
shade
the
stereo
ee the funiture : : system from the direct rays of
: fea) be -——————4 the sun.
aa = Cer atee ee eCurtains also help to reduce
. paced Wi (oan resonance and reverberation in
ue Ce eee the listening room.
t a “
Se ee ee =e PN Speaker system
} e@ Install the speakers to the left and right so
that they are subject to the same conditions
Connecting the speakers
both to the side and at the back. (The bass
Carpet Listening position is slight- is more pronounced if you set them up
Use high current capacity con- Carpets on the floor fy to the apex of an equi- against a wall.)
necting cords and do not make help to absorb the lateral triangle formed with eInstall the speakers so that they are not
them longer than necessary. sound. left and right speakers. affected by vibration transmitted through
the floor.
INSTALLATION PRECAUTIONS
To
ensure
the
best
sound
quality
and
trouble-free
operation,
avoid
setting
up
the
amplifier
in
any
of
the
locations
described
below:
Locations liable to downgrade performance
and result in breakdowns Resulting trouble
1.
Locations
exposed
to
direct
sunlight,
or
near
heaters.
.
External
heat
causes
the
performance
of
the
electronic
parts
to
deteriorate,
and
operation
becomes
unstable.
2.
Locations
with
poor
ventilation,
with
high
humidity
or
mois-
.
Cause
of
faulty
contact
in
input-output
terminals,
and
rust.
ture
contents,
or
dusty
locations.
High
humidity
and
a
high
moisture
content
cause
deterioration
in
insulation.
There
is
also
the
danger
of
current
leakage
and
heat
generation
in
the circuit parts.
Dust
or
grease
in
the
rotat-
ing
parts
causes
them
to
deteriorate.
3. Locations susceptible to vibration. . These locations affect the precision parts adversely.

REAR PANEL FACILITIES
SA-708/HA model
Opa
i
li
Pig
0 ele
as t Oe
> eS
SS
— —a > o>
> - —s =
@ PHONO INTERFERENCE FILTER SWITCH
This is used to attenuate radio-frequency inter-
ference from external electronic or electrical
appliances or products during record play.
@ PHONO JACKS
Connect the turntable output cords to these
jacks.
@® TUNER JACKS
Connect the tuner cords to these jacks.
4
@ AUX JACKS
These are auxiliary input jacks. Connect a TV
tuner or cartridge tape player to them.
© SPEAKERS TERMINALS A
Connect your first pair of speakers to these ter-
minals.
© SPEAKERS TERMINALS B
Connect your second pair of speakers to these
terminals.
@ AC OUTLETS (HA, S, S/G models)
These are spare power outlets. Insert the power
plug on the stereo components (turntable, tuner,
tape deck, etc.) into these outlets.
SWITCHED: The power supplied through these
outlets is coupled to the operation of the
amplifier’s power switch. The maximum
power capacity which may be connected to
the two SWITCHED outlets is 100W.
UNSWITCHED: The power is always supplied
through this outlet regardless of the posi-
tion of the power switch. The maximum
power capacity which may be connected
to this outlet is 200W.
NOTES:
@ Never connect an iron ora toaster to these outlets.
@ Do not get the power outlets and the power plugs
wet or touch them with wet hands, since you may get
an electric shock.
GND TERMINAL
This is the ground terminal. Connect the ground
wire of the turntable, etc. to this terminal.
@ TAPE 1 JACKS
Connect the tape deck cords to these jacks.
Connect the REC (recording) jacks to the INPUT
jacks on the tape deck, and the PLAY (playback)
jacks to the OUTPUT jacks.
TAPE 2 JACKS
Connect your second tape deck cords to these
jacks. Connect the REC (recording) jacks to the
INPUT jacks on the tape deck, and the PLAY
(playback) jacks to the OUTPUT jacks.
@ TAPE 2 JACK (HA, HR models only)
Connect the tape deck to this jack with DIN-type
(recording/playback) cord.
a2 AC INLET (HA, HR models only)
Plug the power cord into this socket.

PIONEER
(3) LINE VOLTAGE SELECTOR SWITCH
(S, S/G models only)
Check that the indication of the switch is same as
your residence before plugging the power cord
| into the outlet. If it isn’t or if you move to an
area where the voltage requirements differ,
change the switch setting as follows.
Before adjusting, disconnect the power cord.
1. Unscrew the fuse cap with a Phillips screw- (g
driver, then take out the fuse and plug. Fuse cap “Lg
2. Re-install the plug with its cutaway section Phillios Setewativer
exposing the correct voltage indication as os
Table
shown in Fig. A.
3. Refer to the table and install a replacement
fuse (provided as an accessory).
4. Insert the fuse in the fuse cap, then fit the cap
to the plug and tighten.
Fig. A
CONNECTIONS
wren
nnn
nn
nnn
nnn
nnn
nnn
CONNECTION DIAGRAM |
\
Turntable \
Cartridge tape
Tuner player
i 8
g #9 O
GND | |OUTPUT OUTPUT OUTPUT
SA-708/HA
SWITCHI o¢
TOTAL 1
eD
DOW MAx
Connect to
ground terminal
of turntable,
(tuner, tape deck,
etc.)
la =
{
INPUT |
(REC) OUTPUT |
Ground (PLAY) l
lead Tape deck 1 )
| PELE
AE Aa
©, #6
|
L ~—
Grounding INPUT OUTPUT
to earth Tape deck 2. (REC) (PLAY)
ooo
[Es ==] C
I
!
|
I
§ Seesep - Sse cook J L R L R
DIN connector Speaker system A Speaker system B

{
SPEAKER SYSTEM CONNECTIONS (Fig. 1)
The amplifier is provided with two sets of SPEAK-
ERS output terminals. Use the A set when con-
necting only one set of speakers. Viewed from the
front, the R (right channel) SPEAKERS terminals
are on the right and the L (left channel) SPEAK-
ERS terminals are on the left. Connect the left
channel speaker to the L terminals and the right
channel speaker to the R terminals. The red L and
R SPEAKERS terminals have a plus polarity and
the black terminals have a minus polarity and the
speaker systems have also the same dual polarities.
When connecting, always connect minus to minus
and plus to plus.
Cautions when connecting the speakers
1. The speaker output terminals have polarities:
minus (black) and plus (red). The input jacks on
the speakers also have plus and minus polarities.
When connecting, make sure that these polarities
are aligned: plus to plus and minus to minus. If
the left and right speaker polarities are mis-
aligned, the reproduced sound will not display a
natural stereo effect.
2. Use speakers with a nominal impedance ranging
from 4 ohms to 16 ohms.
3. Never use the speakers with the speaker output
terminals shorted (minus and plus jacks con-
nected) since this may damage the power transis-
tors in the amplifier.
Processing and connecting the speaker cords
(Fig. 2)
1. Cut off the covering of the speaker cords as
shown in Fig. 2- @.
2. If the strands at the tip of the cord are pointing
in all directions, twist them with your thumb
and forefinger. Otherwise some of the strands
may come into contact with other terminals and
cords, and cause a short.
3. Push down on the buttons under the terminals
with the tip of your finger, and slip the tip of
the cord into the hole in the center of the
terminal. Make sure that the lead wire in the
cord does not protrude.
4. Remove your fingertip from the button. The
- terminal will snap back into position and so
check that the cord is securely connected. You
may not hear any sound if the cords are not
connected properly.
Right channel
speaker system
SPEAKERS
terminals
Connect your second pair
of speaker system.
Left channel
speaker system
Fig. 1
Speaker lead wire preparation
and connection
Fig. 2

!
i
TURNTABLE CONNECTIONS (Fig. 3)
Connect the output cords of a turntable to the
PHONO input jacks. Connect the ground lead of
the turntable to the GND terminal on the ampli-
fier.
NOTE:
The way in which the output cords are attached will
depend on the type of cartridge used. If you intend to use
a low-output moving coil (MC) cartridge, always provide a
special MC transformer or a head amplifier.
TUNER CONNECTIONS (Fig. 4)
Connect the output jacks of a stereo tuner to the
TUNER input jacks with the connecting cords.
AUX JACKS CONNECTIONS (Fig. 5)
These jacks can be connected to the OUTPUT
(PLAY) jacks on a TV tuner, cartridge tape player
or tape deck. Use connecting cords with pin plugs
to connect the OUTPUT jacks on the component
with the AUX jacks.
TAPE DECK CONNECTIONS (Fig. 6)
This amplifier is provided with two sets of record-
ing (TAPE REC) output jacks and two sets of
playback (TAPE PLAY) input jacks. Connect each
of the jacks in the following way using the con-
necting cords which come with the tape deck.
Connections for recording
Connect the recording input jacks (INPUT) on the
tape deck to the TAPE REC jacks on the amplifier.
Connections for playback
Connect the playback output jacks (OUTPUT) on
the tape deck to the TAPE PLAY jacks on the
amplifier.
NOTE:
Connect your second tape deck to the TAPE 2 jacks
(REC, PLAY).
Connections using the recording/playback
connector (Applicable to HA, HR models)
If your tape deck is equipped with a recording/
playback connector (DIN-type), use the optional
recording/playback cord to connect this connector
with the TAPE 2 REC/PLAY jack on the amplifier.
In such cases, do not connect pin cords (ordinary
pin plug cords) to the TAPE 2 REC and PLAY
jacks.
ET PIONEER
Turntable
PHONO input jacks
Fig. 3
L channel
7]
R channel
TUNER input jacks
Fig. 4
Cartridge
tape
player
9
OUTPUT
jacks
a
—
wa
L.
channel
ll
R channel
AUX input jacks
Fig. 5.
Tape deck 1
OUTPUT - INPUT
(PLAY) (REC)
Recording connections
Fig. 6

FRONT PANEL FACILITIES
11 -
=
il TUNER = PHONO. AUX
an Jermemmma esos wins
oo cos 93 3 10 @s| (aa
———————
@ POWER SWITCH
Set this switch to ON to supply power to the
amplifier. There will be a short delay when it is
set to ON, because the muting circuit has been
actuated to suppress the unpleasant noise that is
sometimes generated when the power is on and
off.
@ SPEAKER SELECTOR
Use this selector to select the speaker systems.
OFF: Sound not obtained from speakers.
A: Sound obtained from speakers connected
to the A speaker terminals.
B: Sound obtained from speakers connected
to the B speaker terminals.
A+B: Sound obtained from speakers connected
to both A and B speaker terminals.
@ POWER METER
This meter allows you to read out the rated
power level on the fluorescent display tube when
speakers with a nominal impedance of 8 ohms are
connected to the amplifier’s speaker terminals.
@ FUNCTION INDICATORS
The TUNER, PHONO, AUX function indicators
light up in accordance with the position of the
function selector.
NOTE:
The function indicator will not go off when the tape
monitor switch is set to position ‘‘1”’ or ‘‘2”’.
@© LOUDNESS SWITCH
When listening to a performance with the volume
control turned down, set this switch to ON and
the bass and treble will be accentuated.
When the volume is low, the human ear finds it
harder to hear the bass and treble than when the
volume is high. The loudness switch is thus
designed to compensate for this deficiency. By
setting it to ON, the bass and treble come through
much more strongly and the sound takes on a
punch even when the volume control is turned
down.
© VOLUME CONTROL
Use this control to adjust the output level to the
speakers and headphones. Turn it clockwise to
increase the output level. No sound will be heard
if you set it to “‘0”’.
@ MUTING SWITCH
Set this switch to —20dB to attenuate the audio
output by 20dB. There is no need to adjust the
volume control if you use this switch when turn-
ing down the audio output temporarily and when
changing over records or tapes.
HEADPHONE JACK
Plug the headphones into this jack when you
want to listen through your stereo headphones.
NOTE:
Set the speaker selector to OFF when listening only with
headphones,

@) BASS AND TREBLE CONTROLS
|
| Use these controls to adjust the bass and the
| treble. If you set the tone switch to ON and turn
the bass control to right from its center position,
you will be able to emphasize the sound in the
low-frequency range, Conversely, turning the bass
control to the left from the center position, you
will attenuate the sound.
You can use the treble control to adjust the
sound in the high-frequency range.
TONE SWITCH
Set this switch to ON when adjusting the bass and
treble controls. When set to OFF, the tone con-
trol circuits are disengaged and frequency
response is flat. This function is convenient for
checking phono cartridge and speaker tone
quality and listening room acoustics.
@ BALANCE CONTROL
Use this control to balance the volume of the left
and right channels. First, however, set the mode
selector to MONO, and adjust so that the sound
appears to come from somewhere exactly be-
tween the two speakers. If the sound appears to
be louder on the right, it means that the volume
of the right channel is higher. Turn the balance
control to the left and adjust.
Conversely, if the sound appears to be louder on
the left, it means that the volume of the left
channel is higher. Therefore, turn the balance
control to the right and adjust. After adjusting,
return the mode selector to ST.
(2 SUBSONIC FILTER SWITCH
When this switch is set to the 15Hz position, the
subsonic filter with a cut-off frequency of 15Hz is
actuated. The subsonic filter serves to attenuate
frequencies lower than 15Hz in a 6dB/oct slope.
It is therefore effective in suppressing ultra-low-
frequency noise which is generated by record
warp and other causes. You cannot actually hear
this noise but it is a factor in the generation of
intermodulation distortion and it may damage
your speaker system. Set this switch to the 15Hz
position during record play for the best effect.
(3 MODE SELECTOR
Use this selector for selecting the performances.
ST: Set to this position for normal stereo re-
production.
MONO: Mixes left and right channel signals and
reproduces them monophonically.
FUNCTION SELECTOR
Use this selector to select the program source.
When set, the function indicator above the meter
panel corresponding to the position of the func-
tion selector will light up.
TUNER: Set here when listening to broadcasts
on a tuner connected to the TUNER jacks.
(The TUNER function indicator lights up.)
PHONO: Set here when playing records on a
turntable connected to the PHONO jacks.
(The PHONO function indicator lights up.)
AUX: Set here when listening to a program source
which is connected to the AUX jacks. .
(The AUX function indicator lights up.)
(5) TAPE DUPLICATE SWITCH
Use this switch when employing two tape decks
to duplicate recorded tapes or edit tapes. This
switch is otherwise kept at the OFF position.
1>2: When playing back the tape on a deck con-
nected to the TAPE 1 jacks and recording
(duplicating) on a deck connected to the
TAPE 2 jacks.
OFF: Set to this position when not duplicating.
2>1: When playing back the tape on a deck con-
nected to the TAPE 2 jacks and recording
(duplicating) on a deck connected to the
TAPE 1 jacks.
TAPE MONITOR SWITCH
Use this to select the program source which is
being reproduced.
' Set here to monitor a recording or a tape
being played back on a tape deck which is
connected to the TAPE 1 jacks.
OFF: Set here whenever you are not playing back
a tape or monitoring a recording (i.e. when
you have set the function selector to
PHONO or TUNER, or AUX for an alter-
native program source).
2: Set here to monitor a recording or a tape
being played back on a tape deck which is
connected to the TAPE 2 jacks.

OPERATIONS
Volume control
Loudness switch
Speaker
selector
Tone controls
Tone switch
Balance control
PRIOR TO SWITCHING POWER ON
Before switching the power on, set the various
controls as follows:
1. Set the subsonic filter switch to OFF.
. Set the volume control to 0.
. Set the tape duplicate switch to OFF.
. Set the tape monitor switch to OFF.
Set the tone switch to OFF.
Set the balance control to the center position.
Set the loudness switch to OFF.
Set the muting switch to OFF.
. Set the mode selector to ST.
Set the tone controls to the center positions.
. Set the speaker selector to the appropriate
position according to the employed terminals.
PLAYING RECORDS
1. Set the function selector to PHONO.
2. Operate the turntable to play the record.
3. Adjust the volume with the volume control.
4. Set the tone switch to ON in line with your
preference and adjust the tone with the tone
controls.
HOODIA AWN
et
Precautions when playing records. .
e Lower the stylus gently on to the surface of the
record. It is a good idea to set the muting switch
to —20dB or to turn the volume down when
lowering the stylus onto the record.
10
Muting
switch
Tape monitor
switch
Tape duplicate
switch
Function selector
Mode selector
Subsonic filter switch
e Set the subsonic filter switch to 15Hz when
- there is a great deal of noise in the low-
frequency region or when the bass speaker’s
diaphragm moves even though no sound can be
heard during a performance.
e Do not cause the turntable to vibrate while a
record is being played since this will cause the
stylus to jump and scratch the record. Do not
turn off the power if the stylus is still tracing
grooves on the record.
LISTENING TO THE BROADCAST
1. Set the function selector to TUNER.
2. Operate the tuner and tune in to the desired
station.
3. Adjust the volume with the volume control.
4. Set the tone switch to ON in line with your
preference and adjust the tone with the tone
controls.
USING THE AUX JACKS
1. Set the function selector to AUX.
2. Operate the audio component which you have
connected to the AUX jacks.
3. Adjust the volume with the volume control.
4, Set the tone switch to ON in line with your
preference and adjust the tone with the tone
controls.

USING THE TAPE DECKS
PLAYBACK
1. As shown in Fig. 7, set the tape monitor switch
to 1 if the tape deck is connected to the TAPE 1
jacks. Set the tape monitor switch to 2 if it is
connected to the TAPE 2 jacks.
2. Operate the tape deck controls for playback.
3. Adjust the volume with the volume control.
4.Set the tone switch to ON in line with your
preference and adjust the tone with the tone
controls.
NOTE:
Always set the tape monitor switch to the OFF position
when you are not playing back a tape.
RECORDING
1. Set the function selector to the program source
to be recorded.
2. Set the tape duplicate switch to the OFF posi-
tion.
3. Set recording level by means of the controls on
the tape deck.
4. Operate the tape deck controls and start record-
ing.
NOTE:
The volume, tone controls, balance control and loudness
switch have no effect at all on signals from the REC jacks
of the stereo amplifier.
Tape Monitoring (Fig. 8)
If a recording is being made on a 3-head tape deck,
the recorded sound can be monitored through the
speaker system if the tape monitor switch is set
to 1 or 2. In this case, both recording and playback
connections must be made.
NOTE:
If you have a 2-head open-reel deck or cassette deck, you
will not be able to monitor the recorded sound even if
you set the tape monitor switch to 1 or 2. However, you
will be able to hear the sound at the playback end
(program source).
DUPLICATING AND EDITING RECORDED
TAPES
1. Connect the two tape decks as shown in Fig. 9.
2. When duplicating the contents of a recorded
tape in tape deck 1 onto a blank tape in tape
deck 2, set the tape duplicate switch to 1 P 2.
When duplicating from deck 2 to deck 1, set this
switch to 2 P 1.
3. When you want to monitor the quality of the
sound being recorded, set the tape monitor
switch to 1 or 2.
PIONEER
TAPE
Tape deck 1 BUSCIGATE. KRAOMITOR
Tape deck 2
MONITOR |
Fig. 7
Tape deck 1 TAPE
OVUPLICATE NONITOR
Tape deck 2
FUNCTION | 7770 %
PHONO) SOuRce
[rower |
AUX
Tape deck 1
(for
playback)
rTAPES
Tape
deck
2
Set the tape duplicate switch to 1P 2 when recording from tape
deck 1 to tape deck 2.
Fig. 9
NOTE:
Do not record programs simultaneously on both tape deck
1 and tape deck 2.
11

I
TOY
TN
==
CONDITIONS
FREQUENTLY
MISTAKEN
FOR
MALFUNCTIONS
In event of suspected malfunction, check the unit according to the : following table and confirm proper
operation of other connected equipment. If the difficulty cannot be corrected, turn off the power and
contact a Pioneer authorized service center.
@ Does power indicator light on? @ Plug power cord securely into power outlet.
@ Set power switch to ON.
@ Connect properly.
(If all components are connected properly,
check the components themselves).
e Are speakers, tuner, tape deck and other com-
ponents connected properly?
@ Set so that the switch corresponds to the
source.
Is function selector set to correspond to
program source?
@ Set to OFF except for tape playback. Refer to
page 11.
Check tape monitor switch position.
@ Select in accordance with the speaker terminals
to which speakers are connected.
Check speaker selector position.
e@ Set muting switch to OFF, and rotate volume
control clockwise.
Check positions of muting switch and volume
control.
e@ Sound will not be heard for several seconds due
Sound is not heard immediately even though
to actuation of the muting circuit. See page 8.
power switch is set to ON.
e Connect to as to eliminate faulty contacts.
(Noise may decrease when ground wire is con-
nected.)
e Any problem with connected components? @ Correct fault.
e Set tone switch to ON and muting switch to
OFF.
Occasional noise is Are components connected properly?
heard.
Sound quality remains @ Check positions of tone and muting switches.
unaltered.
e Try changing the installation locations of the
turntable and speakers.
e Turntable and speakers are too close to one
another.
Howl caused
when volume is raised.
e@ Installation locations of turntable and speakers @ Do not turn up the bass controls excessively.
are not stable.
PIONEER ELECTRONIC CORPORATION 4-1, Meguro 1-Chome, Meguro-ku, Tokyo 153, Japan
U.S. PIONEER ELECTRONICS CORPORATION 8&5 Oxford Drive, Moonachie, New Jersey 07074, U.S.A.
PIONEER ELECTRONIC (EUROPE) N.V. Luithagen-Haven 9, 2030 Antwerp, Belgium
PIONEER ELECTRONICS AUSTRALIA PTY. LTD. 178-184 Boundary Road, Braeside, Victoria 3195, Australia
<79D0O1FOBO1> Printed in Japan (ARB-328-0)