Pioneer SA-9900 User manual

INTEGRATED STEREO AMPLIFIER
SA-9900
OPERATING INSTRUCTIONS KCU
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WARNING:
TO
PREVENT
FIRE
OR
SHOCK
HAZARD,
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DO
NOT
EXPOSE
THIS
APPLIANCE
TO
RAIN
OR
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MOISTURE.
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CONT!
Stereo System Composition... &
Connection Diagram 4
Connections 6
Front Panel Facilities ......e;00see002 8
Before Operation .
Operation
ENTS
Employing
Tape
Deck
u
Effective
Operation
2
Employing
PRE
OUT
&
POWER
IN
Jacks...
14
Specifications 45
Conditions Frequently Mistaken for
Malfunction 16
FEATURES
Superior DC Balanced Circuitry
Differential amplifier circuits are employed inthe equalizer,
tone control, and power amplifier sections. Each amplifier
section is supalied by a balanced power supply systom that
assures excellent DC balance and stability, while nearly
climinating switching noise daring control operation,
High Power Output at Low Distortion
DDC stability is enhanced by the 2-stage dltferontial ampli
fier and pure complementary OCL citeuits are employed
for direct coupling of all stages. Constant current load cir
‘cuits are used in 2 locations an a large negative Feedback is
applied due to the high gain circuit composition. A wick
band high power output can be obtained with broad
dynamic range and low distortion.
Precise RIAA Equalization
Utwraprecision grade metalized film resistors (sputtering
procets) and styrene capacitors ate combined as equalized
ements. Deviation from the RIAA curve has been reduced
bby 10.24 in the frequency range of 30H2~ L5kHz. An FET
Is employed in the 1st stage differential amplifier and by
adopting a 3stage direct coupled SEPP circuit, input
impedance
variation
due
to
frequeney
is
minimized,
High
ability is attained at low distortion, in addition to a greatly
expanded acceptable input lovel. Distertionless disc repro-
duction can therefore by enjoyed, even with a high output
cartridge
and
a
dynamic
music
source
containing
large
peak
inputs
Delicate Tone Adjustments
The
Pioneer
developed
win
tone
control
cireuit
is
applied
to the conventional Biss and Treble controls, Super-low and
super-high bands can be individually adjusted 10 provide
delicate compensation for such factors as room acoustics
and speaker and cartridge frequency characteristics. A Tone
switch
is
also
provided
which
can
be
used
to
compare
the
effectiveness of the fone controls
Reliable Electronic Protection Circuit
In event of speaker shorting or malfunction in which DC is
applied to the output, speakers and transistors are reliably
guarded by an electronic protection cireuit. This circult also
vets as a muting circuit when the power switch is turned on
and off
Accurate Volume Control Expands Adjustment
Range
The Volume control is equipped with a precision attenu:
itor of the type employed in measuring instruments and
Dither high reliablicy equipment, Volume adjustment can be
easly performed when listening at low volume levels, tem
porarily reducing the volume, or employing a low input
level (high sain) power amplifier, The volume adjustment
range can also be expanded by employing the volume
control and attenuator switch in combination.
Phono 2 Jacks Provided with Impedance Selector &
Level Contra
‘A convenient impedance selector switch (35k, SOKO,
7OKQ, 100k{1) and level control (0 ~ -12dB) are provided
for the PHONO 2 jacks for matching cartridge ourput
characteristics, comparison listening, etc
pe Switch for Easy Tape Duplication
By connecting 2 tape decks, the desired program only from
2 previously recorded tape can be ected and re-recorded,
The Duplicate switch also lets open reel tape be duplicated
onto cassette tape,
Audiophile Functions Incorporated
A PREJPOWER AMP selector switch plus PRE QUI and
POWER IN jacks are included. An external power amplifier
can
be
connected
to
the
PRE
OUT
jacks
to
allow
listening
Comparison and power amplification, This feature can alo
be employed for composing a multé-amplifier or + channel
system, A single SA-9900 can thus be used to set up various
kinds of audio sysiems,

_ oe
PIONEER
STEREO SYSTEM COMPOSITION
‘* Do nok place equipment in locations that arc unlevel or subject to vibration,
@ Allow for good rear panel ventilation of components; avoid humidity and dust.
# Keep equipment away from radiators or other heat sources.
$A-9900 APPLICATION EXAMPLE

CONNECTION DIAGRAM

CONNECTIONS
SPEAKER. SYSTEM
‘The $A-9900 is provided with 2 sets of speaker
output terminals, A and B. Normally, connect a
pair of speaker systems to the A terminals.
¢ As shown in Fig. 5, connect the right channel
(as viewed from the front) speaker to the
terminals, and the left channel speaker to the L
terminals.
© Observe plus (+: red) and minus (-: black}
polarities of the output terminals and those of
the speakers. When performing connections, use
care to connect + to + and ~ to - of the speakers
and the SA.9900 speaker terminals,
172 te of specher systems {A & 8) are to be slrataneoel
thad. be tre oN gente esters ate BO. or more th
pedeves Matioction coh bo crbd ens then 80 packer ore
Enplved
Connecting Lead Wites to Speaker Terminals
1. Strip about 15mm (1/2") of the insulation from
the end of lead wire.
2.1 the conductor is siranded, twist the strands
together Lo prevent spreading
8, As shown in Fig. 6, depress the terminal button
and insert the lead wire into the hole
4, Release the bution and confirm that the lead
wite is secured in place.
TURNTABLE
Connect tumtable outputs to the PHONO 1 jacks,
and ground wire to the GND terminal
NoTES
1A moving magnet (MM type cortidge cen be dwecty com
heed however Toxe outer moving toll (HC) corte
equves un ecesiory matching transformer or head empitr,
2. Avtecend turgible can be connected 10 the PHONO? ack
BHF the turntables equipped wih 2 toneums, connect one
camaarn tothe PHOND feck ond the other 10 the PHOND
leche
@ The PHONO 9 jacks are provided with a LEVEL
control for adjustment of the input level and
an IMPEDANCE selector switch for switching
of the input impedance (35, 50, 70, 100 k&),
Operation of these Features is described on p.13.
Late (Ld channel sposker Fight (8) chan epeakor
i
SPEAKER
SYSTEM
CONNECTION
Fig. 5
“wit trond ogthor
\
Speaker teed wires \
bo
apr
iy: See
SPEAKER
LEAD
WIRE
CONNECTION
ree
TunwranLe
sA-9800 &
pe
se
TURNTABLE CONNECTION
Fig 7

TUNER
Connect an AM/FM stereo tuner to the ‘TUNER
Jncks.
AUX 1 & 2 TERMINALS
Those jacks are for auxiliary inputs. ‘They can be
used to connect a cartridge tape player deck,
second tuner, or other source.
TAPE DECK (OPEN REEL OR CASSETTE)
‘The SA.9900 is provided with 2 sets of recording
(TAPE 1 & 2 REC) and playback (TAPE 1 & 2
PB) jacks. Connect as follows:
Recording Connections
Connect the tape deck playback terminals (LINE,
OUTPUT) with the TAPE 1 PB jacks.
Playback Connections
Connect the tape deck playback terminals (LINE
OUTPUT) with TAPE 1 PB jacks,
Nore
1, Cormeera second tape deck 10 she TAPE 2 (REC & PB) jac.
2, Wimpy comnceling cords nappied with tae deck
Using AC Outlets
These can be used to supply AC power to other
components, such as tuner, tumtable, tape deck,
te.
SWITCHED: AC power to component plugged into
this
outlet
is
coupled
with
the
SA-9900
POWER.
switch setting, Maximum 100W total,
UNSWITCHED: AC power always present at this
outlet, regardless of POWER. switch setting. Maxi
mum 100W.
PIONEER
eee 8
‘Gonnecung ora SL
TuneR connection
Fig. 8
‘TAPE DECK CONNECTION
Fig. ©

FRONT PANEL FACILITIES
SPEAKERS SWITCH
OFF: Cuts off speaker sound (when using head
phones only),
A ‘Sound obtained from speakers connected to A.
Speaker terminals,
B: Sound obtained from speakers connected to B
speaker tetrminas
Sound obtained from speakers connected to
both A and B speaker terminals
[BASS TWIN CONTROL
Adiusts low frequency one,
100H2: Adjusts frequence band below 4008, Control
effectiveness at 1ODH: is 47,5dB,
50Hz: Provides additional control to the 100Hz knob
for the Frequency band below 20012. Control
effectiveness at SOME is 4.5,
POWER SWITCH.
Depress to turn on AC power
Alter the POWER switch is set toON,a few seconds will
lapse before sound is obtained. This is due to the built in
muting circuit and does not signity difficulty
PHONES JACK
‘Ourput jack for stereo headphenes,
TONE SWITCH
When set to OFF, the TONE control circuit is disengaged
and frequency response becomes ‘flat. The BASS and
TREBLE twin controle do not function at this time,
Conveniont for checking phono cartridge and speaker tone,
tone control effectiveness, and listening room acoustis,
LOW FILTER SWITCH
Astenuates low frequency rl
15Hz: Provides 12UBjociave attenuation for fre
quencies below 15H2,
OFF: Set to this position when not employing filter
30H2: Provides 12dB/octave attonuation for fre
‘quencies below 30}
HIGH FILTER SWITCH
Aitenuates high frequency noise, such as seratches and
tape hiss
I2kHz: Provides 12dBloctave atteruation for tre
quencies above 12hHz
OFF: Set to this position when not employing filter.
SkHzz Provides 12dBJoctave attenuation lor fre
‘quencies above 8kH.

TREBLE TWIN CONTROL
‘Adjusts high frequency tone.
VOkH2: Adjusts frequency band abowe 2.5kHz. Cons
trol effectiveness at 10kHz is #7.5d3.
20kHz: Provides additional control to the 10kHZ
knob, for the frequency band above SkHe
Control effectiveness at 20kHz 5 4 4.50B,
I PIIECIS
—VOLUME CONTROL
‘Adjusts output level to speakers and headphones.
Scale is graduated in éB with DdB at maximum level
When employed in combination with the ATTENUATOR
switch, finer and wider range attenuation can be pecform:
ed, See additional description on 9.13,
PILOT LAMP
Lights. when AC power is turned on.
FUNCTION SWITCH
PHONO
1 For
playing
records
on
a
turntable
con
nected to the PHONO 1 jacks.
Same as above, for PHONO 2 jacks, or for
reproduction through a mieraphane con:
nected to the MIC jack on the front
panel. Note, when the microphone is
connected to the jack, the turntable
connected to the PHONO 2 jacks cannot
be used.
MIC|PHONO 2:
TUNER: For listening to roads UMough the
aux
For
playing
sgnals
fed
tthe
AUX
1
Aux2% Same astbov, for AUK aks
MIC JACK
‘Accepts
the
plug
of
the
microphone.
L_ ATTENUATOR SWITCH
Attenuates the output level as follows:
048: No atteruntion
“15d8: Attenuates by 15dB.
3048) Attenuates by 3048
MODE SWITCH
REV: Reversesteft and right channel stereo signals.
STEREO: Normal stereo reproduction.
LiF: Mises loft and right channal signals for mono
reproduction.
L
Mono
reproduction
of
left
channel
signal
through
both
speakers,
R Mono reproduction of right channel signal
throuigh both speakers,
Po MONITOR SWITCH
1 Playback or monitoring of tape deck connect
ed to the TAPE | (REC & PB) jacks,
SOURCE: Set to this position at times other than tape
playoack,
2 Playback or monitoring of tape deck connect:
fed to the TAPE 2 (REC & PB) jacks
(TAPE DUPLICATE SWITCH
Set to ON when employing ? tape decks to duplicate or
edit tapes. Be sure to sei to OFF (upper position) at
other times,
'—BALANCE CONTROL
‘Adjusts left and right volume balance of speakers and
headphones, Turn clockwise from center fo increase right
channel (R) volume, ard counterclockwise from center to
increase left channel (L| volume

BEFORE OPERATION
Before setting the POWER switch to ON, set the
‘other controls andl switches as follows:
¢ VOLUME control to % (minimum)
@ ATTENUATOR switch to 04B
© TAPE MONITOR switch to SOURCE
© TAPE DUPLICATE switch to upper position
(OFF)
MODE switch to STEREO
TONE switch to OFF
LOW & HIGH FILTER switches to OFF
BASS & TREBLE controls to 0 (center position)
SPEAKERS switch to A or B according to em:
ployed speaker terminals (A or B). Now you ean
switch your POWER awitch ON.
OPERATION
PLAYING RECORDS
1. Set the FLINCTION switch to PHONO 1 if the
turntable is connected to the PHONO 1 jacks,
and to MIC/PHONO 2 if it is connected to the
PHONO 2 jacks.
Note, however, that the turntable connected to
the PHONO 2 jacks cannot be used if the
microphone is plugged into the MIC jack.
. Play record on tumtable,
Adjust the VOLUME, BASS and TREBLE
controls for desired volume and tone,
Notes
+ Lower the tonearm gently onto the record.
‘Temporarily setting the ATTENUATOR switch
to -80dB will reduce noise incurred at this
time
* Do not tum off the power while the stylu
contact with the record.
‘* Avoid imparting vibration to the tumtable while
a record is being played. This may cause the
stylus to jump and possibly damage the record.
© Howling may be caused if the tumtable is too
close to the speaker systems. Allow for ade-
quate spacing when installing.
wore
‘The PHONO 2 jacs ore provided with on input PHONO 2 (MIC
LEVEL conrol and on IMPEDANCE euiten. Their operation i»
deserved on p3,
EMPLOYING TUNER (AM or FM Reception)
1, Set the FUNCTION switch to TUNER.
2. Tune in desired station on tuner.
3. Adjust. VOLUME, BASS & TREBLE controls
for desired volume and tone.
USING THE MICROPHONE
1, Connect the microphone to the MIC jack.
2. Set the PUNCTION switch lo MIC/PHONO 2
8. Adjust the sound level by turning the VOLUME
control to the right little by little.
vores,
© Von should ce ¢ high impedance ehowe 2042) Asami 1
Iniorephone wit @ standard ommm dumcter phot plaw Poneer
putt on the market a wide srlty of hgh performance micro
Phone Jr you section
© Cinder certam conditions of se, « microphone gives rise co how
ing oF foedback mine, Toke are not to rise te volume 00 High
tien the mcmphane & cbse ta the sper stereo 6 ram
woth a great dev! of resonance Microphone wil perform enast
effectively with TREBLE ant BASS controls at their métwey
positions
+ Whale axing the microphone, only microphone sound will be
‘hazd fivoush the let a rah speakers
EMPLOYING AUX COMPONENTS
Auxiliary components, such as acartridge tape play-
fer deck, ean be connected to the AUX 1& 2 jacks,
1. Set the FUNCTION switch to AUX 1 to play a
component connected to the AUX 1 jarks, and
to AUX 2 to play a component connected to
the AUX 2 jacks,
2, Operate component.
8. Adjust VOLUME, BASS & TREBLE controls
for desired volume and tone.
Protection Circuit,
© After turing on the power of the Sa-9900,
5 ~ 8 seconds will elapse before sound is
obtained from the speakers. This is due to the
operation of the built-in protection and muting
circuit. It serves to both prevent switching noise
when the power is tumed on and off, and
protect the speakers in event DC oceurs in the
output,
© Operation of the internal relay during playing
will cause continuous a clicking neise.
‘This would most likely be caused by speaker
terminal shorting or overload (used speaker
impedance less than 49 }.'The protection cixcuit
fanctions automatically in this type of case to
disconnect the speaker terminals and safeguard
the transistors and speakers. The circuit is self
rosetiing and after the cause of trouble hes been
corrected, it will return to normal condition.