Text preview for : SA-720 INSTRUCTIONS.pdf part of Pioneer SA-720 Instructions for SA-720 in 3 parts



Back to : SA-720 INSTRUCTIONS.part1 | Home

S l72cI
STEREO AMPLIFIER

HB,YP S, S/G

CONTENTS
Line Voltage Variations Front Panel Facilities
Rear Panel Facilities

Operating

Procedures

Connections

Troubleshooting... Specifications

UsingtheOptionalComponents .......

6 g
11

n

IMPORTANT
To prevent electric shock, do not remove cover. No user serviceable parts inside, refer servicing to quatified service personnel.

Always disconnect all the eguipment from the mains supply
when disconnecting the signat teads. The power cord shoutd be connected last, make sure that the power switch is off. Unplug the set from the watt socket when it is not to be used for an extended period of time.

The wires

FOR USE IN UNITED KINGDOM in this mains lead are coloured in accordance Blue: Neutral Brown: Live of the wires in the mains tead of

the following cord:

with

As the colours this apparatus may not correspond with the coloured marking identifying the
terminals in your plug proceed as follows.

FOR USE IN UNITED KINGDOM AND AUSTRALIA
CAUTION

240V:

Mains supply voltage is factory adjusted at 240V.

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 cotoured red.

()proNEER'

LINE VOLTAGE VARIATIONS
The specifications of this model differ according to the
shipment destination. r For U.K. ('HB' stamped on packing case): Power line voltage is 240 volts, and AC outlets are provided on the

r

For general export model ('S', 'S/G'stamped on packing A 4-poi nt (1 1 OV I 1 2OV /22OV /24OV I voltage selector switch is provided on the rear panel, and AC outlets
case ) :

are provided on the rear panel.

o

rear panel. For Australia (YP stamped on packing case) Power line voltage is 240 volts.

:

ln case of S and S/G model, please confirm the setting of the line voltage selector switch. lf it is not set properly, change the setting of it according to the VOLTAGE AND FUSING VARIATtoNs.

REAR PANEL DESCRIPTION
For U.K. model (HB model)

For Australia model (YP model)

For Generalexport model (S and S/G models)

VOLTAGE AND FUSING VARIATION
You will find the line voltage selector switch on rear panel. This switch has positions for 110V, 12OV, 22OV and 240V power
sources.

,/ffi__ro"*",

Before your model is shipped from the factory, the switch is set to the power requirements of the destination; nevertheless, you should check that it is set properly before plugging the power cord into the AC outlet. lf the voltage is not properly set or if

you move to an area where the voltage requirements differ,
adjust the selector switch as follows. Before adjusting, disconnect the power cord. 1. Unscrew the fuse cap with a Phillips screwdriver, then take out the fuse and plug. 2. Re-install the plug with its cutaway section exposing the correct voltage indication as shown in the illustration below' 3. Refer to the table and install a replacement fuse (provided
as an accessory).

@:ESELEcToR
r",".^p_l%_
phirips screwd,,*,

_)$

Voltage
I

Fuse

10V. 1 20V

4. lnsert the fuse in the fuse cap,
tighten.

then fit the cap to the plug

and

220V,240V

5A 2.5A

FRONT PANEL FACILITIES

= *.-A "

'J{,'

"4

o
@

POWER SWTTCH

@ nux/vrDEo swrrcH
Push this switch to listen to a program source connected to the AUX/VIDEO terminals.

this switch to turn on or off power. When this switch is depressed, power is supplied and POWER ON indicator lights. When this switch is released. power is turned OFF and POWER
Depress

ON indicator is extinguished.

@ voluruE coNTRoL
Turn this control to adjust the output level of the speakers and the headphones. Output is minimum at O and increases as the
control is turned clockwise,

PHONES JACK
for private listening
to OFF.
.

Plug headphones into this jack

Set the SPEAKERS selection switch

)

SPEAKERS SELECTOR

@

BALANCE CONTROL

of this switch to listen through headphones or choose either of two pairs of connected speakers, Normally, the switch should be positioned at A. OFF . . Use this setting when listening through headphones . (no sound comes out of the speakers). A , , . . Sound is heard from speakers connected to the A
Change the setting

in order to

This control should normally be set to 5. When the output from the left and right speakers or headphones is not the same, adjust
by turning the control clockwise or counterclockwise.

CD TONE SWITCH
This switch is used when you wish to adjust the tone using the
BASS or TREBLE controls.

speaker terminals.

OFF ...

B..,.

Sound is heard from speakers connected
speaker terminals.

to the

B

@

BASs AND TREBLE cONTROLS
to adjust the tone. The right one controls treble ON .

The audio signal bypasses the BASS and TREBLE controls, and they have no effect on the reproduced sound. Sound will be the same as when the BASS and TREBLE controls are set to FLAT, regardless of their
actual setting.

Use these controls

..

Set the switch to ON when you wish to adjust the
tone using the BASS and/or TREBLE controls.

and the left one controls bass. FLAT is the neutral position. Turning knob clockwise accentuates the bass or treble, and turning knob counter-clockwise attenuates

@ suesoNrc swrrcH
Set this switch to the "15 Hz" position when listening to records. It serves to attenuate frequencies lora,er than 1 5 Hz and, therefore, it can be used to suppress the ultra-low-range noise which is generated by record warp and other factors, When listening to program sources other than records, set this switch to oFF.

the bass or treble.

o

LOUDNESS SWTTCH

Set this switch to ON when listening at low volume. Bass and treble will be emphasized to compensate for human listening
characteristics and provide natural listening curve.

@ TAPE ZADAPTOR SWITCH
Depress

@

MODE SWTTCH
Set here for ordinary stereo listening of a stereophonic source.

this switch to ON when usinga graphic equalizer or a second tape deck (or any equipment) connected to the TAPE 2/ADAPTOR termi nals . For details, refer to pages 9 and 10.

This switch should normally be set to STE REO.

STEREO.

@ @ @

TUNER SWITCH

this switch to listen to an AM or FM broadcast (refer to page 6) or to record a radio program (refer to page 8),
Push

MONO. . . . Set here to listen to a monaural source. The left and right channel input signals will be mixed and heard in mono through both the left and right
speakers.

PHoNo swrrcH
to listen to records (refer to page 7) or to recordto tape (refer to page 8).

@ powsR

METER

Push this switch ing from records

TAPE 1 SWITCH

The POWER meter shows the output level in watts when speaker systems with a nominal impedance of 8 ohms have been connected to the SPEAKERS terminals. L . . . . Outputof leftspeaker

to listen to tape deck connected to TAPE 1 terminals (refer to page 7) or when dubbing from one tape deck
Push this switch

R....

Outputofrightspeaker

to another (refer to page 8).

REAR PANEL FACILITIES
Example: For General export model (S and S/G models)

O

TAPE 2/ADAPTOR

(@)TERMINALS
a

)

Connect the recording (input) cords of a graphic equalizer or

When this amplifier

PHONES TERMINALS is housed in a

Pioneer Stereo Rack, the

second tape deck

to these terminals.

rack's headphones are plugged in here.

@ @ @

TAPE 2/ADAPTOR (rpr-Tr) TERMINALS
a

@ SPEATERS TERMINALS A
Connect the first pair of speakers to these terminals. When facing the system in the listening position, connect the right speaker to

Connect the playback (output) cords of a graphic equalizer or second tape deck to these terminals.

the R terminals and the left speaker to the L terminals.

GND TERMINAL
PHONO TERMINALS TUruCN TERMINALS

Connect the ground wire of the turntable to this terminal.

O

SPCATERS TERMINALS B

Connect the second pair of speakers to these terminals. Connect the turntable's output cords to these terminals.

@ powen coRD
Plug into a household outlet (or the outlet of an audio timer).

O
A

connect the tuner's output cords to these terminals.

GD AC OUTLETS (SWTTCHED)
Power supplied through these outlets is turned on and

off by the

G) AUX/VIDEO TERMINALS
television tuner

amplifier's POWER switch. Total electrical povver consumption
of connected appliances should not exceed 100W.

or the

audio output of a VTR (Video Tape

Recorder) can be connected here. The terminals can also be used as spare terminals for connecting other equipment,

@ EC OUTLET (UNSWITCHED}

O

rape I (@)TERMINALS
1

Power flows continually to this outlet, regardless of whether amplifier is switched ON or OFF. Electrical power consumption of the connected appliance should not exceed 200W. NOTE:

The tape deck's recording (input) cords are connected here.

G) TAPE

(@}

TERMINALS

The tape deck's playback {output} cords are connected here.

Do not connect.qpliances with high power consumption such as heaters, irons, or Elevision #ts to the AC OUTLETS. Doing so can cauff the amplifier to malfunction.

CONNECTIONS
The figure below shows how connections should be made when using with Pioneer's System Components.

FM "T.. type antenna

All these B terminals are used when @nnect.
ing. second pairs of speaker systems,

Aftbr twisting the cord,s strands, wrap them around terminal screw and then turn the terminal in a clockwise
direction.
Push the terminal button and insert the speaker lead into

the hole.

@

Release the button and check the lead is locked.

,,"ffi:rr\:r".

,eI lq
YEI_

Push all the way

@<
R
Cassette tape deck

Headphones

Plug the Stereo amplif ier power cord into a house-

@

cords from Stereo Rack

hold outlet.

Twist the cord's strands and insert them into the hole.

Right speaker

Left speaker
Stereo Rack

OPERATING PROCEDURES
PR

ELIMINARY OPERATIONS
!Set the SUBSONIC switch to OFF.
r Set the MODE switch to STE REO.

rSet the TONE switch to OFF.

STEREO
(

tffi
.,/ I )
Release

rSet the BALANCE control to 5.

m"","
rset

r@
r Set the VOLUME control to 0 by turning

it counterclockwise until it stops.
the SPEAKERS switch to

A.

.set

the TAPE 2/ADAPTOR switch to OFF.

TO LISTEN TO FM OR AM BROADCAST
The amplifier and a tuner are used.

Set the amplifier's and the tuner's POWER switches to oN.
PO\NEFI

Depress the TUNER switch.

@@
,
Depress

9",1" I

Set the VOLUME control to
3.

Set the tuner to the desired
station.

Adiust the volume with the
VOLUME control.

Follow the tuner's operating instructions to obtain optimum reception,

6

OPERATING PROCEDURES

PLAYING RECORDS
The amplifier and a turntable are ueed.

Set the POWER switch to oN.
PO\NER

Depress the PHONO switch.
PHONO

Set the SUBSONIC switch to
15H2.
STJEISONIC

ffi.,

Set the record playing on the turntable, paying attention to

propel speed and record size.

Adlust the volume
VOLUME control.

with

PLAYING BACK TAPES
The amplifier and a tape ded< are ured.

[Jlset the amplifier's and the I I ltape deck's POWER switches
to ON.

f
Depress

Begin playback operation on

tape deck, paying attention
tape selectaon switch, Dolby NR switch, etc.

to the position of

l4i3lil"J::",,T1'"

wi'1h

ffi
Ft

Tape deck

,ffi
-\_-..-

&
Playback operation

-

OPERATING PROCEDURES

ADJUSTING THE TONE
Reproduced sound is affected by speaker characteristics and

set the ToNE switch to oN.
TONE

by the reflection and absorption characteristics of the listening

room. The bass and treble can be accentuated or attenuated to control these effects to your taste.

,
Depress

Adjust tfre tone by turning the BASS and TREBLE
controls.
EIASS

TFEE}LE

whon the ToNE switch ir set to oFF, the tone will be as if the BAss and TREBLE controls were both ret to FLAT. By titching the TONE srvitch on and off, the 3ound quality can be readily compared.

RECORDING FM BROADCASTS OR RECORDING FROM RECORDS
fhe amplifier,
tablel are used.
t:t:. a tape deck and a tuner (or

turn'

Turn ON the equipment to be used.
Depress the TUNER or PHONO switdt. Push the TUNER switch for recording FM broadcasts or the
PHONO switch for recording from records.

Operate the tuner (or the turntablel to obtain t'te desired FM broadcast (or play the desired record). Adjust the tape deck's recording level.
Refer to the tape deck's operating instructions for the proper procedure.

Begin recording with the tape deck.

TAPE.TO.TAPE DUBBING
Two tape decks are used for

thb operation.

The following operational procedure is followed when dubbing from a tape deck connected to the TAPE 1 terminals to a tape deck connected to th TAPE 2 terminab.

Turn ON the equipment to be used.
Push the TAPE 1 switch.
Tape deck connected to the TAPE
1

Begin playback on the tape deck connected to the TAPE 1 terminals. Begin recording on the tape deck connected to the TAPE 2 terminals. When dubbing from a tape deck connected to the TAPE 2 terminals to a tape deck connected to the TAPE 1 terminals, push the TAPE 2/ADAPTER switch to ON and push
any switch (PHONO. TUNER, or AUX/VIDEO} other than the TAPE 1 switch.

Tape deck connected

to the TAPE 2 terminals.

a

USING THE OPTIONAL COMPONENTS (Connectionsl
The figure below shows how connections should be made when using Pioneer's System Components and optional components

FM" T" type anten
I
fl

Audio timer

All these B terminals
are used when connecting second pairs of speaker systems.

Plug the Stereo

fier's power cord !nto Timer outlet.

Household

outlet
Headphones cords

@..f[T all
Push

from the Stereo Rack

the

way in.

Output cords

lnput cords

Twist the cord's strands and insert them into the hole.

Right speaker

Left speaker
Stereo Rack

USING THE OPTIONAL COMPONENTS

GRAPHTC EOUALTZER (SG-300) The sound that is reproduced from audio equipment

is

Tape dec*

subtly affected by the structure and acoustics of the listening room. This graphic equalizer allows the sound to be compensated for an enhanced overall acoustic effect. lt also allows you to create your own individual sound.

Connections
"Graphic equalizer connections." (For further details on the connections and operation, refer to the relevant sections in the SG-300's Operating lnstructions.)

Refer

to the section on page 9 dealing with

Stereo amplifier

AUDIO DIGITAL TIMER (DT.51O)
The DT-510 is an electronic timer that will automati' cally turn stereo equipment on or off at the desired time. lt can wake you up to your favorite music by playing tapes or starting radio broadcasts at the desired
time, it can record radio broadcasts while you are away, and it can turn off a radio broadcast or tape after you fall asleep.
DT-510

I'T=Tm@ll-l

10

TROUBLESHOOTING
Sometimes an operational.fault can be mistaken for a malfunction or failure. Check the following points and see if the symptoms of the trouble are outlined below before you get in touch with the serviceman. lf you cannot locate the symptoms, turn off the poli/er and contact your nearest Pioneer Service Center, Service Station or authorized pioneer dealer.
Symptom No potaer even when amplifier,s POWER
Porrible troublo and Remedy Power plug is not connected to the power outlet.

sruitch is set to ON.

Connect the plug to the outlet.

No sound even when tor switch is set.

UNCTION selec-

SPEAKERS selector is set to

VOLUME control is set to

OFF.

'0"

worked free of speaker terminals.

cords

have

?t '/,AB '\)) (A\\
\_-/
Select switch in accordancs with the speaker systems you have connected to rear
panel terminals.

rs'
,r----<_+

{::::i..^

\

7---<-\---J

slowly clockwise.
have

Rotate VOLUME control
worked free.
cords

Connect securely.

TAPE 2/ADAPTOR switch is set to ON.

One or both input

Set
tion Sound through one speaker only.

to OFF (Released posi).

Connect the jacks securely.

BALANCE control is ser to LEFT or RIGHT.

worked free.

One of input cords has

Set the control to
Sound
is

center

Connect the jacks securely. high.

Connect securelv,

distorted.

VOLUME control is set too
high.

BASS control is turned too
BAsS

r-!

tion.

Set the control

to lower

posi-

Rotate
"F LAT."

in

direction

of

10

SPECIFICATIONS
Amplifier Section
Continuous p0wer output of 65watts* pet ch!!: nel, min., at 8.ohms from 20Hertz to 20,000 Hertz with n0 more than 0.03%total harmonic
Miscellaneous
Power Requirements

PowerConsumption .... Dimensions
Weight (without

HB, YP models; a.c.24OY, 50/60H2 "lOV /12OV /220V l24OV ,50/60H2 S. S/G models; a.c. 1

HB,YPmodels;340W
S, S/G models;130W

distortion.
Continuous Power Output at l kHz (both channels driven) T.H.D. O.O1%,8 ohms ' . . 70 watts per channel Total Harmonic Distortion (20 Hertz to 20,000 Hertz, 8 ohms, from AUX) 32.5 watts per channel power output

package)

420(Wlx94(H)x349(D)mm 16-9/16(W) x 3-11/16(H) x 13-3/4(D) in
7.3kg (16 lb 1oz)

.....

Furnished Parts
Operating I nstructions

.....Nomorethan0.02%
lntermodulation Distortion (50 Hertz: 7,000 Hertz = 4 : 8 ohms, from AUX)
1

continuous rated power output . . No more than 0'03% 32.5 watts per channel power output

.....Nomorethan0.02%
Damping Factor (20 Hertz to 20,000 Hertz, 8 ohms) .
I

.

50

nput (Sensitivity/l mpedance)

PHONO TUNER AUX.

.2.5mV/50 kilohms
150mV/50 kilohms

..l50mV/SOkilohms TAPE PLAY 1, 2/ADAPTOR . . . . 150mV/50 kilohms

Phono Overload Level (T.H.D.0.03%, 1,000H2)

PHONO
Output (Level)
TAPE REC 1,2/ADAPTOR

.

.

130mV 150mV

Speaker

A, B, OFF

Frequency Response PHONO (R IAA Equalization) . . . . .20H2 to 20,000H2 l0.3dB TUNER, AUX, TAPE PLAY 1,2/ADAPTOR dB 1OHz to z0,ooOnz Tone Control

]!

BASS. TREBLE Subsonic Filter .

....110d8(100H2) . tl0dB (10,000H2)

15Hz (-6dB/oct) Loudness Contour (Volume control set at -40d8 position) . . . . . +6dB (100H2), +3dB (10,000H2) Hum and Noise (lHF, short-circuited, A network)

PHONO PHONO

....84dB
.
lO3dB
NOTE:
Specifications and the design subiect without notice due to improvements.

TUNER, AUX, TAPE PLAY 1,2/ADAPTOR . Hum and Noise (DlN, continuous Power/SOmW) TUNER, AUX, TAPE PLAY 1,2/ADAPTOR

to

possible modifications

71dBl62dB
88dB/62d8

*

Measured pursuant to the Federal Trade Commission's Trade

Begulation rule on Power Output Claims for Amplifiers.

PIGINEEFI ELECTFIGDNIC CclFIPc'FIATIclN 85 Oxford

4-1, M.gr.o 1-Chome, Meguno-ku, Tokyo 153, Japan Dnive, Moonachie, New Jersey O7O74' U.S.A. U.Et. PIC|NEEFI ELECTFICINICEi COFIPCIFIATION Antwenp, Belgium PIGINEEFI ELECTFICINIC IEIJFICIPE! N' V' Lu itha gen-Ha ven 9, 2O3O Bnaeside, Vidtonia 395, Austnalia PIONEEFI ELECTFTGTNTCA AUSTFALIA PTY. LIr,,' 17A144 Eloundany Fload,
<81G03Y5504> Printed in

Japan