Luxman R1500 User manual

AM/FM STEREO RECEIVER model R1500 OPERATION MANUAL

You are about to begin a new high f idelity experience. The
LUXMAN R-1500 Receiver is unique in the annals of high
fidelity equipment. Though built with extremely sophisti-
cated engineering, its concept is quite simple: to produce a
receiver with performance comparable to that available in
the f inest separate tuners, preamplif iers and amplif iers.
After extensive research,the R-1500 was designed without
compromise to provide high output. low distortion and an
exceptionally wide range of available power. ln addition,
this unit reflects great attention to control flexibility and
human engineering.
The R-1500 represents the finest standards of design and
craftsmanship, but the proof is in the handling... and in
the hearing. As you proceed to connect the receiver. may
we suggest you read all the ¡nstruct¡ons carefully before
turning the unit on? A few moments invested now can
eliminate doubts or delays later.
lf you have any questions, please do not hesitate to consult
your dealer, or distributor in your territory.
Pleasurable listening!
NAMË AND USAGE OF EACH CONTROL
1. INPUT SELECTOR SWITCH
This switch permits proper selectìon of desired progranìme
sources. You may set either of the positions (Aux-1 , Aux-2,
Phono-.1 , Phono-2, FN/, AN/l)
2. AM/FM DÍAL
Turn tìre tuning knob according to the f requencies marked
on this dial and the desired signal can be received. Receiva-
ble frequency range for FIV js from SBMHz to 108MHz,
while for AfV from 525Kl¿ to 1605KH2. When a stereo
FIV is being received the "stereo" beacon is illuminated
3. SIGNAL STRENGTH METER
The accurate tuning point can be obtained when the
needle of this meter shows its maximurn swing The move-
ment of the needle depends on the strength of the receiving
signal Even if the needle swings to the extreme right it
does not irnpair the meter. But for perfect reproduction of
stereo FlVl, it is recommended to have the needle's swing
exceeding "4" on this meter.
ln case of FI\4 reception such signals as cannot be cut off
when the muting switch(14) is at the "on" position are
used as stereo reception.
MICROPHONË LEVEL CONIROL
(PULL ON MIC IEVËL)
4. FM FINE TUNING METER
When no FM signal is received this pointer rests in the
vicinity of the centre position. When the tuning knob( 5 )
ìs turned and the needle of fine tuning meter(4) begins
to swing, the needle of this meter comes out of the centre,
and as the accurate tuning point is getting very near the
needle cornes back again closer to the centre. Thus the
accurate tuning point can be obtained with the needle at
lhe dead centre position This meter is exclusively effective
on FN/1, and in case of AM reception the needle does not
move from iLs cenLre poinL.
5. TUNING KNOB (TUNING}
Use this knob for tuning on station. When any desired
signal is received make accurate tuning slowly so that the
pointer of signal strength meter( 3 ) shows its maxirnum
swing and that for f ine tuning meter( 4 ) comes to íts
centre position. For AM reception this centre tun¡ng meter
does not operate.
6. STEREO BEACON
When selector switch(1 ) is set to "FM" position this
stereo beacon lights up in case the FN/ stereo signal is
receiving, while it does not light up for the mono signal.
Further when monaural FM on reception changes into
14 l!1Ul lNc SWITCH (MUllNG) 25 MAINS SWITCII (POWEB)
3 SIGNAL SIRËNGTI] METER Iru srEREo
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5 IUNING KNO¡] (fUNING)
DIAL
LOW CUT FILTËR
22 FIIGIJ CUT FILTER
ON LY S\,^/ITCH
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6 STFRFÔ AEACON
4 FM FINE TUNIN
ì
13
9 MODÊ SELECTOB SWIICH
AM/I-M
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20 TRAÊJEL FBEOUÉNCY SELECTOR SWITCH
ßASS IJREOUENCY SELECTOB SWITCH
17 BASS LEVEL CONTROL (ßASS)
-1G LTNEAR EOUALTZÊR 24 HEADPHONE JACK (STEßEO PHONE)
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stereo this beacon lights up automatically to indicate
stereo recept¡on. On the contrally if reception changes
from stereo to mono, the beacon does not light. In
case rnono reproducÌion of stereo signal is desired, set
the mode selector switch (9) to mono position.
MICROPHONE LEVEL CONTROL (PULL ON MIC.
LEVEL}
The input level of the microphone jack(8 ) is controlled by
this knob Normally this switch should be left pressed in.
Pull the knob outwards and the crrcuit is put into opera-
tion. Then turn it clockwise so that an appropriate level
can be obtained A word of warning: do not turn the main
amplifier volume up too loud as annoying feedback "howl"
might take place between your speakers and microphone.
Experimenting will help you find the best levels for each of
these controls.
8. MICROPHONE JACK (MIC. R. L. CHANNEL)
lnput sensitiv¡ty 2mV; input lmpedance 50 Kohms.
Both L-channel and R-channel have ìts own standardized
jacks, and STEREO SOUND N4 lXlNG of mic input with
other programme sources is possible when two rnicrophones
(stereo) are plugged in These jacks accept the microphone
of 600 ohms (low impedance) or 50 Kohms (high im-
pedance) type and the rnput is amplif ied and controlled by
the |evel control volume( 7 ) so that it can be mixed to
both channels respectivelY
9. MODE SELECTOR SWITCH
This switch allows seleclion of sound reproduction modes
such as Stereophonic, Monaural and Stereo-reverse For
f rrrther details refer to the "Mode Selection"
10. TAPE DUBBING SWITCH
The dubbing lever switch has three positions: in the centre
position "source", which is the programme source as
selected by the f unction selector. When moved to the "up"
position(1 to 2) it will allow the output of tape recorder
"1" to go to the input of tape recorder "2" for dubbing
(reprint). Beprint from tape recorder "2" Iorape recorder
"1" is allor¡¡ed when moved to the "down" position
(2to1).
11. TAPE MONITOR SWITCH
When this switch ¡s lifted up to the "deck-1 (4 CH)"
position playback from "TAPE IVIONlIOR-1" is possible,
while at the "2" position "TAPE N/ìONITOR 2" is repro-
duced The tape connector(32) is also f unctionable when
the switch is set at the ".1 " position, i.e,, it f unctions ìn
parallel wìth "TAPE MONITOR 1". In case of 3-head tape-
recorder whìch has playback head for playback in the
course of recording, simultaneous plavback monitoring is
then possible while recording. ln this case this receiver
receives the playback signals f rom either of TAPE
IVIONIIOR-1 , TAPE IVIONITOR 2, or tape connector while
feeding Ìhe recording signals to REC. OUT 1, REC. OUI 2
and tape connector. Remember that this switch must be
set at the corresponding position to which the tape recorder
is connected.
Caution: lf this switch is at the "source" position no
playback possible from tape recorder.
12. VOLUME CONTROL (VOLUME}
A clockwise turn of this control increases volume, while a
counter-clockwise turn decreases and finally cuts out
volume. Thìs knob is of dual concentric construction and
permits separate control of either the r¡ght or left channels;
the outer axis is for the right channel, and the inner axis rs
for lhe left channel. This control usually controls both
channels simultaneously, but you may adjust either channel
by holding one axis while turning the other The click-
sÌoppers are only for the outer axis, i.e., the right channel
13. LOUDNESS SWITCH
Because loudspeakers and ears generally respond less to
extreme high and low (treble and bass) frequencies as
volume levels are reduced, the LOUDNESS switch is
included to boost these frequerrcies and thereby provide
tonal compensation. Whether or not you use th¡s switch
depends upon the levels at which you generally listen, the
kind of speakers you have, the room acoustics and a
number of other variables. Experimantation is the best
guide to using the LOUDNESS switch
14. MUTING SWITCH (MUTING)
Interstation noise which is possible when the tuning point
is drifted can be eliminated by this swìtch in FN/ reception
Use this to cut off ¡nterstation noise or other impractically
weak radio signals. Broadcasts which can be received at the
muting on position are practical for stereo reception. lt is
recommended to keep th¡s switch always "on" except when
a weak siqnals is received
lf tuning of stereo broadcasts only is desired, push this
switch "on" otherwise leave it normally "off" f or reception
of both Stereo and Monaural FIV broadcasts. Also when
this switch is at the "on" pos¡tion, weak signals are com
pletely eliminated
16. LINEAR EOUALIZER
This is a new tone control which provides a tonal
compensation specifically intended for subtly augment¡ng
regular tone controls. w¡th the control in its mid-position,
flat frequency response is achieved. When switched to
either of 2 "up tilt" positìons, the entire response curve ìs
rotated so as to linearly increase treble response while
simultaneously decreasing bass response. Conversely, selec-
lion of a "down tilt" position rotate the response curve in
a clockwise direction and provides a gradual decrease of
treble and a simultaneous increase of bass. This equalizer is
not released even when the Tone Controls Switch is
set at the "tone defeat" positìon. For further details,
refer to the Operation of Linear Equalizer (Page 13).
17. BASS LEVEL CONTROL (BASS)
A clockwise turn of the control boosts the bass response,
and a counter-clockwise turn decreases and cuts the bass.
This control has a click stopper with 11 poìnts. lt yields a
flat frequencV response when set at the centre of the rota
tion angle. You can choose a turnover (roll-off) frequency
of 150H2 or 300H2 with the Selector Switch(18) The Bass
Level Control is of dual concentric construction and
permits separate control of either the right or lefÌ channels:
the outer axis is for the right channel, and the inner axis is
for the left channel. This control usually controls both
channels simultaneously, but you may adjust either channel
bv holdinq one axis whìle turning the other The click-
stoppers are only for the outer axis, i.e., the right channel.
18. BASS FREOUENCY SELECTOR SWITCH
Bass turn-over (roll-off) frequencies can be selected with
this swìtch. When the desired frequency (150H2 or 300H2)
is set by thìs switch, tone control starts to function at
the selected frequency. At the FLAT position, a flat
frequency response is obtained, regardless of the position of
the Bass Level Control(17).
19. TREBLE LEVEL CONTROL (TREBLE)
A clockwise turn of this knob boosts the treble response,
while a counter-clockwise turn decreases the treble This
control is of the same construct¡on as that of the Bass Level
Control, and ìts operation corresponds to that described in
(11 )
20. TREBLE FREOUENCY SELECTOR SWITCH
Function-wise, it is the same as the Bass Frequency Switch
described in (18) Treble turn-over (roll-off) frequencies
can be selected at 3KHz or 6KHz.
21. LOW CUT FILTER
With this switch low frequency range can be cut off at
the rate of 12 dBloct Reduction at th¡s rate can be made
below 70H2. See the f urther details in the "Operation of
Low Cut Filter"
22. HIGH CUT FILTER
Setting of this switch reduces the amount of high frequen-
cies above I KNz ar the rate of 1 2 dB/oct See the further
details in the "Operation of Treble Cut Filter"
23. SPEAKER SELECTOR SWITCH (SPEAKERS}
Thìs receiver offers convenient use of 3 pairs of speaker
systems You can choose independent or simultaneous
driving of 1 or 2 systems among 3 pairs as per the
indication on the panel. When the knob is set at the "B"
posìtion B speaker terminals(29) start to function, and like-
wise at the "A + B" position both A and B speaker
termìnals(29 ) si muitaneously operate.
24. HEADPHONE JACK (STEREO PHONE}
Connection of stereophonic headphone to this jack allows
pr¡vate listening. Output signals are always available irre-
spective of the position of speaker selector switch(23) For
use of stereophonic headphone, however, it is recom-
mended to set the speaker switch at the "off" position
25. MAINS SWITCH (POWER)
Repetition of pressing this knob ensures alternate switch-on
and off.
26. MAINS CORD
For operation of this rece¡ver the mains plug attached to
this cord should be connected to the mains power supply
so u rce.
27. I\4AINS FUSE (U-TYPE AND E-TYPE)
2
15. STEREO ONLY SWITCH ln the mains power circuit is inserted 5A(U-TYPE) 'or
J

3A(E-TYPE) fuse. When the fuse is blown, replace ir,
ascertaining the cause of failure and rendering appropriate
remedy. Replacement can be easily done by hand turning
the cap to the direction of arrow mark Be sure that the
mains cord is disconlrected from the mains power supply
por nt.
28 EXTRA MAINS OUTLETS (U-TYPE AND
E-TYPE)
Convenient for supply of mains power to other annexed
audio equipments such as record player, tape recorder etc
The UNSWITCHED terminals are independent of the mains
switch(25) where the rnains power is always available, while
the SWITCHED one is coupled wìth the mains switch and
supply of the mains power depends on the mains switch.
The maximum capacity for rhe UNSWITCHED and
SWITCHED is 100W.
29. SPEAKER TERMINALS (A.B.C. SPEAKERS)
The speaker systems are to be connected to these terminals
Press the cap of the terminal and insert the speakers bare
cord to the terminal hole. Then release it. Now firm
connection is finished. These terminals are coupled with
the speaker selector switch (23), and the selector switch
must be set at the very position corresponding to the
terminals to which the speaker systems are connected. Bed
termìnal is for it while black for r:, Note that the attached
28 EXTRA MAINS OUTLETS {U IYPE AND E TYPE}
æ SPEAKEB IERMINALS (A B C SPEAKEBS)
speaker cords should be used for connection of the 1st pair
of speakers. For further details refer to the "Connection of
Spea kers".
30. AM FERRITE CORE ANTENNA (BUILT.IN BAR
ANTENNAI
This ìncorporated antenna functions when the input
selector sw¡tch is set at the "AM" position, In case strong
signa¡s are available it is not always necessary to installthe
outdoor antenna,
31. MUTING LEVEL CONTROL
This is effective on FM programmes to select the FM
muting threshould between weak and strong positions This
operates when the Muting Switch(14) is at the "on"
posrlron
32. TAPE CONNECTOR
This 5-pin connector is of DIN standard. With recording
output(REC. OUT) and tape monitor(TAPE N/ONITOR)
terminals in it, connection for recording and playback is
feasible with a single lead-wire of DIN plug ¡f the tape-
recorder has the same connector. For playback through
this connector the moniÌor switch(11) must be at the
"deck-1 " position. Recording output signals are always
available from this connector.
41 AM NOISE FILTER
35 FM ANTENNA '¡'ERMINAL l300ohms)
34 FM ANTENNA TERMINAL (75 o
AM EXTERNAL ANTENNA fE
33. AM EXTERNAL ANTENNA TERMINAL
ln case normal reception is possible with the built-in bar
antenna, it is not necessary to use this terminal. But when
reception of a weak signal is desired, connect a f ull scaie
anlenna wire to this terminal" When a simple wire antenna
is used for this terminal it is not always necessary to have a
ground connection which sometimes deteriorates sensi-
tivity. A full scale outdoor antenna is effective to decrease
undesired noises.
34. FM ANTENNA TERMINAL (75 ohms)
Use this connector for FM antenna with 75 ohms coaxial
cable as lead-in wire. A coaxial cable can be easily
connected - a core wire to the 75 ohms terminal and the
sheathing wrre to the GND terminal.
35. FM ANTENNA TERMINAL (300 ohmsl
Connect to this terminal T type(dipole type) antenna or
antenna feeder cable for TV(impedance 300 ohms) or FfV
antenna wìth TV feeder cable used as a lead-in wire, Please
do not use short wire on this terminal as replacement for
the antenna, and always connect an exclusive FlVl antenna.
36. AUX TERMINALS (AUX.I, AUX.2I
This is an auxiliary input terminal for playback of flat
frequency response such as SW/LW tuner, line output of
tape-recorder, and audio output of TV receiver. Input
sensitivity'l 50mV, and input inrpedance 70 Kohms.
37. PHONO TERMINALS (PHONO-1, PHONO-2I
This terminal is for playback of a magnetic pick-up (MM,
IVl, fVC type). lnput sensitiviry 2.7mY with impedance
50 Kohms. Almost all pick-ups can be used except MC
type of very low output (0.01-0.1mV)" For such IVC
type cartr¡dges of extremely low output level, it is needed
to boost the voltage up to the specified level by use of step-
up transformers or head-amplifier.
38. RECORDING OUTPUT TERMINALS (REC. OUT-
1, REC. OUT-2)
Signal for recording is taken out f rom this terminal. The
recording sìgnal ìs provided to 2 tape-recorders. These 2
terminals are wired in parallel in the inside circuit,
39. TAPE MONITOR TERMINALS (TAPE MONITOR-
1, TAPE MONITOR-2)
terminal, For this purpose the monitor switch must be set
at "deck-1 " or "deck-2"" The "deck-1 " corresponds to the
"TAPE N/ONITOR-1" and TAPE CONNECTOR, white
"deck-2" to "TAPE IVIONITOR-2". ln case of 3-head tape-
recorder so-called Ìape monitoring is feasible - simultane-
ous recording and playback"
40. GRoUND TERI\4INAL (GND)
Connect the earth lead wire of record player (from motor
or pick-up arm). This Ìerminal may be used as an earthing
terminal of this receìver, which is, however, not always
necessa ry.
41. AM NOISE FILTER
This is effective on AM programmes. When aÌ the ,,in,, posi_
tion, this switch reduces noises and whistles to negligible
level Normally this should be kept at the ,,out,, position.
NOTE
Thls receiver can be used as a front or rear amplifier of
quadraphonic reproductìon. ln case you have 4-channel
recorder, front or rear 2-channel can be reproduced by this
amplif ier section. Connect the recording output terminal
of this receiver with the input terminal of 4-channel
decoder and the tape monitor terminal with the output
terminal. Both pairs of terminals, i.e., REC. OUT,1/TApE
fVIONITOR-1 and REC. OUT-2/TAPE MONTTOR-2 offer
the same facility, but indication of 4-channel availability
is made only at the side of R EC OUT,1/TAPE
N/IONITOB 1 for easy understandìng, Needless to say
when the REC OUT-1/TAPE MONITOR 1 side is used
for this purpose the monìtor switch must be set at.the
"deck-1 " position.
1
30 AM FERRITE CORE ANTENNA
(BUILT,IN BAR ANTENNA) 40 GROUND TERMINAL (GND}
31. MUTING LEVEL CONTROL
32. TAPE CONNECTOR
38. RECOBDING OUTPUT TERMI,.IAL 3 (REc OUT 1. 2)
MATNS FtrSE (U.TypE AND E_TypEJ 39 TApE MONTTOR TERMTNALS ITApE MON¡rOR_1, 2)
36 AUX fERMINAL (4UX.1,2) Line output of tape-recorder ìs reproduced from thìs
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INSTALLATION
While the R-1 500 Receiver has been designed for maximum
ease of installation and operation, we strongly suggest you
read this section through before proceeding to connect and
operate the unit. Because the B-1500 incorporates manV
technical and operating refinements, it may be a bit
different from equÌpment you have used in the past.
PLACEMENT AND MOUNTING
The R-1500 may be placed in virtually any convenìent loca-
tion, keeping in mìnd the necessity of connecting cables to
your speakers and an antenna for FM. Because of its
advanced solid-state construction, the unit produces little
heat. But certain minimum ventilation requirements are
still necessary to provide optimum operation:
When the R-1500 is placed on an open shelf in a bookcase
or cabinet (mounted in its integral metal case or with the
accessory furniture case) about 10 cm of freespaceshould
be allowed above it.
POWER REOUIREMENTS AND MAINS CONVE
NIENCE OUTLETS (E.TYPE, U-TYPE)
The R-1500 Receiver operates on the mains power only
100-125, and 210-250 volts, 50-60H2, consuming 350 watts
maximum at full power output. Three convenience outlets
are provided on the rear panel to supply the mains power
for additional components suÇh as automat¡c or manual
turntables, tape recorders, etc.
The mains cord of a turntable should be connected to one
of the unswilched outiets, to permit it to rotate f u lly
before turning on. The mains cords of other components
can be connected either to the sw¡tched outlet, and they
will be shut off when the receiver is turned off. Not more
than 100 watts totai should be drawn from the unswitched
outlets, nor the switched outlet. (lf in doubt about the
wattage drawn by additional components, check the ratings
on their rear panels, or in their manuals, Automatic turn-
tables, for instance, generally draw from 20-50 watts.)
ANTENNAS
with the R-1500. For FlV, a folded dipole, available from
your dealer, is generally adequale. This section will tell you
how to connect them.
AM ANTENNA
ln all but remote rural locations, the special fold out ferrite
core antenna mounted on the rear of the receìver provìdes
excellent AIV reception. For the best results, make certain
that this antenna is folded out away from the chassis to its
maximum extens¡on. lf an external antenna is required,
connect a length of wire (any type will do) to the AM
ANTENNA Ìerminal on the rear panel.
FM ANTENNA
Folded Dipole
Connect the antenna lugs to the 300-ohm ANTENNA
terminals on the rear panel Rotation of the FM antenna
for best reception will be described under Tuning Control
in the OPERATION section of this manual.
FM OUTSIDE ANTENNA
lf you live in a remote fringe area, or in a metropolitan area
with reception problems, it may be necessary to use an
outside antenna. lf you require a separate FM antenna,
purchase a quality FM unit from your dealer. Connect the
cable from lhe antenna to the 300-ohm ANTENNA
terminals on the rear of the R-1500.
MASTER ANTENNA AND OTHER 75-OHM SYSTEMS
Some buildings have master antenna systems that carry FlV.
Connect to the 75 ohm ANTENNA terminal on the
rear of the un¡t.
Note: For clarification, if necessary, see your dealer,
who can advise you concerning the best antenna installa-
ti o ns,
A SPEAKER B SPEAKÊR
LOUD SPEAKERS
The R-1500 Receiver is designed to drive 3 pairs of
speakers, used either separately or 2 together.
Because of its high output power, two pairs of even the
lowest-efficiency speaker systems may be used together
without fear of placing too heavy a demand upon the unit.
Although almost any type of wire may be used to connect
speakers to the receiver, it is recommended that you use
standard guage rip cord. For runs over 15m(50ft), heavier
gauge rip cord should be used if possible. Whatever
thickness of wire you choose, pick the type where you can
distinguish one lead from another, either by conductor
color, a ridge running along lhe insulation of one con-
ductor, or by a colored cord under the insulation. This
will help you hook up the speakers correctly.
PLEASE NOTE
(1) No more than 1.5cm(1 l2"l of wire should be bared
for hookup, since longer bared lengths may produce a
short circu¡t.
(21 Twist all strands of expose'd wire tightly. Loose
strands may cause shorts.
CONNECTING SPEAKERS
unmarked. The other will be desingated 'CON/ì', 'COM-
MON', 'GND', 'GROUND', or Black. Connect the 'COM'
terminal of each speaker to the appropriate black SPEAK-
ERS terminal on the rear o1 the receiver by pushing on the
terminal and Inserting the bare wire in the hole thus
exposed. Make sure the wire does not contact the chassis
or another terminal, to prevent shorts. Then connect the
other speaker terminal to the appropriate red SPEAKERS
terminal of the receiver. To connect a single pair of
speakers, ccinnect the wires from the left speaker (as viewed
from the listening position) to the "L" A SPEAKERS
terminals. Similarly, connect the right speaker to the "R"
A SPEAKERS terminals of the receiver. The 2nd and 3rd
pairs of pseakers can be connected si milarly to B and C
SPEAKERS terminals.
SPEAKER PHASING
To enjoy good stereo reproduction, it is necessary that the
two stereo speakers in any location work as a team,
'pushing' and 'pulling' the air in unison. Otherwise, low-
pitched sounds will sound weaker than they should, and
the stereo effect at higher frequencies will become indis-
tinct. To connect your speakers for proper stereo effect
(this is called "phasing"), proceed as follows:
Play an FM program with the Mode Switch in MONO
position. lf the low bass notes sound normal, the speakers
are properly phased. lf they sound th¡n, or weak, the
ANTENNA
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Except in fringe areas no additional AIV antenna is required Look at your speakers. You will note that one terminal is

speakers are out of phase. Should thìs occur, turn off the
receiver and carefully reverse the connections at either one
of the speaker
TURNTABLES/TAPE R ECORDERS.DECKS
AUTOMATIC AND MANUAL TURNTABLES
The R 1500 has 2 provisions for connection of two turn-
tables. Check the cartridge manual or your dealer, if in
doubt about the proper input for the particular cartr¡dge
in your turntable. As mentioned under POWE R R E-
OUIREMENTS AND ÍVIAINS CONVENIENCE OUT-
LETS, (see page 6 ), the turntable's mains cord can be
connected to the convenience outlet on the rear of lhe
R-1 500.
TAPE RECORDERS AND DECKS
Tape recorders can be connected to record and playback
through the R-1 500 by two nlethods: standard jacks and
special DIN type connector on the rear panel. See page 1 1
for tape connect¡ons of all types. For additional informa-
tion see the manual of your tape machine of consult your
dea ler.
FOR CORRECT PLAYBACK
TINPUTS (Connectìon of input Equipments)
Check f irm connection to the receiver's input terminals of
output terminals of record players, tape-recorders etc. lf
no playback sound comes from speaker systems, the
receiver may be, at first, suspected to be defective, so be
sure about firm connection between arm and cartridge and
also firm fixture of cartridge to the shell.
¡OUTPUTS (Connection of Speaker Systems)
Check firm connection between receiver and speakers. The
right-hand speaker viewed from the l¡stener's position must
be connected to the "RlGHT" terminals of the receiver,
while the left speaker to the "LEFT" terminals. Be careful
about the matching phase of left and right speakers. lf
mismatched, playback sound does not come from the
centre of both speakers even if the mode selector ¡s set at
the "l\4ONO" position, and in the case of stereophonic
playback, faìthful reproduction ìn low frequency range
cannot be expected. Be sure that the speaker selector
switch corresponds to the speaker terminals to wh¡ch the
speaker is connected.
Check whether the mains plug of receiver is firmly con-
nected to the mains power source, and whether the dial
scale lights up when switched on. ln case the dial scale
does not light up even if the electricity is fed to the
receiver, check whether the mains fuse is blown. Affirma-
lively change the fuse ascertaining the real cause of blow
and giving necessary treatment. Replacement of fuse must
be done after the mains cord is unplugged from the mains
power supply point.
IINPUT SELECTOR SWITCH
Check correct positioning of the switch corresponding to
the input terminaìs (PHONO, AUX) to which input equip-
ments are connected,
ITAPE DUBBING SWITCH
Except for tape dubbing (reprint) this switch should be set
at the "source" position.
ITAPE MONITOR SWITCH
For normal playback never fail to set th¡s switch at the
"source" position. Playback with tape-recorder is feasible
with this switch at "deck-1" or "deck-2" corresponding to
the tape-monitor terminal to which the tape-recorder ls
connected. But for reproduction through tape connector
the setting of tape-recorder selector switch should be at the
position of "deck-1 ".
IVOLUME CONTROL
Full turn of this knob to the counter-clockwise direction
yields no sound. Turn to the clockwise direction and enjoy
playback at an appropriate volume. Also adjust unbalanced
volumes between right and left channels. Usually lhis knob
is set at the same volume level for stereophonic reproduc-
tron.
IANTENNA
For satisfactory playback of FM and AM connect an
appropriate antenna to the antenna terminal'
¡MODE SELECTOR
This switch is to select the mode of reproduction' For
stereophonic reproduction set at the position of
"STEREO", otherwise stereophonic reproduction cannot
be obtained even if input signal is stereophonic. When
programme source is reversely connected, set at the position
of "REVERSE" to obtain appropriate stereo reproduction.
BLOCK DIAGRAM
I
I
AUDIO SECTION
3 STAGE
NPN.PNP.NPN
fow Nor_sE
FHoNo.PAF ÂMÞ '
Mrc
STEFEO LOUDN€S ai:-\<:,¿-
7- --
ÀloNrToR FACtLtTtES
9
Iæ.1æ
voLls
è
I
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e
SOPPLY FOR TUNER
0
0[
RF SECTION
I
SIGNAL SIFENCIH
MÛEN FOF FM E AM TUNING MEIER
ÈF
9þ
àC
9e
.'f
ÈF
9e
I
8
TMAINS SOURCE (Connection to Mains Source)

OPERAT¡ON
PLAYBACK FROM RECORD DISC
ICONNECTIONS
Generally a record player consists of a turntable ensuring
constant rotation of the record disc a pick-up (cartridge)
whose stylus (needle) traces the sound groove of the disc
converting the physical signal of the record sound into the
electric signal, and the arm which holds this cartridge. The
player has 2 cords with pin plug at its end for both right
and left channels. Connect the pin connectors to the input
terminals of this receiver IPHONO-1(37) or PHONO-2(37)].
A probable earth lead of player may be connected to the
GND terminal(4O) of this receiver. A mains cord of the
player to drive its motor may be connected to lhe con-
venient extra mains outlet(28) (E and U type only).
This receiver is provided with 2 input terminals (PHONO-1
and PHONO-2) to be selected by the input selector
switch( 1 ), which is useful for comparison test of 2 pick-
ups or using 2 record players. For use of 1 player either of
2 input terminals can be selected.
ISIGNAL PATHS
Put the disc on the turntable, switch on the phono motor,
and set the stylus on the groove of disc. Then recorded
signals begin to be fed to the receiver. First, signals fed to
the receiver through PHONO terminals are brought to the
equalizer section, where recorded signals are equalized and
restored to the original frequency curve. lncidentally this
equalizer curve has been standardized to the RIAA curve.
The equalized signals are then fed to the input selector
swilch (function switch). lf th¡s switch ¡s not set at the
correct position of PHONO, the signals are blocked here
and no more advance is possible. Then the signals are
divided into 2 channels, one line to the recording output
terminal, and the other to the tape monitor switch, Then
the tape reprint switch which is effective on both channels.
lf the monitor sw¡tch(11) is set at the "source" position
the signals are sent to the mode selector switch, and volume
control, but if at the "deck-1 " or "deck-2" position the
tape monitor terminals start to f unction and lhe signals are
stopped at this point. Except when the tape playback is
made by tape monitor terminals, the monitor switch must
be kept at the "source" positon. But when the input
signals are fed to PHONO or AUX terminals recording
output is always obtainable regardless of the positíon of the
monitor switch. Then the signals are sent to lhe volume
control through the mode selector, f ilters, and loudness
control. lf the volume knob is turned to the extreme end
of counter-clockwise direction, the signals cannot proceed
ahead. lt is necessary to set this control at the optimum
volume.
Such controls as linear equalizer, low-cut filter, high-cut
filter, loudness, and tone controls are for flexible and
diversified adjustment of playback sound and do not block
the signals completely. Then the signals reach the speaker
switches amplif ied by the main amplifier. Sound playback
from speaker systems is thus realized if the speaker switch
corresponding to the speaker terminals to which the
speakers are connected is set at the correct position. The
above is the feeding path of PHONO signals starting from
input terminals to the speaker systems. Difficult as it may
sound you can easily understand it from the attached block
diagram. For your pleasant command of this receiver we
recommend you to bear the block diagram in your mind.
TPLAYBACK PERFORMANCE
Now put a disc on the turntable for playback performance.
As the volume control is turned clockwise from the cut
position, playback sound comes out from speakers. As
explained in the paragraph of Sìgnal Paths the sound
playback is possible regardless of the posìtion of [Vode
Selector etc. as far as these essentìal controls are set at the
correct position such as Input Selector Switch(1),
Tape Dubbing Switch(.1 0), lVonitor Switch(11), Speaker
Selector Swjtch(23) and Volume Control('l 2). Now all
preparations have been completed. Check if the volume
levels on both right and left speakers are identical. lf
deviated adjust it by the Volurre Control. For stereophonic
playback see to ¡t that the lVode Selector Swìtch ìs kept at
the "stereo" position, otherwise correct stereophonic
playback is not feasible.
PLAYBACK OF AM/FM BROADCASTING PROGRAM
Selection of the input selector( 1 ) at the AM or FM
position ensures playback of AIV or FM broadcasting
programme, lf you want you can connect other tuner
(AM, FM, LW or SW etc.) to one of the AUX terminals of
this receiver. ln this case the selector must be set at the
corresponding position. As shown in the block diagram
the input signals from the tuner sect¡on on AUX terminals
are directly fed to the lnput Selector Switch. Afterwards
the signals trace the same blocks as explained in the para-
graph of Playback from Record Disc and are reproduced
from the speaker systems. Both for FM stereophonic and
monaural broadcasting the lVlode Selector Switch can be set
at the position of "FfVl", for such accommodation to
the ìnput source can be made in the tunersect¡on. In case
weak FM stereo is received and you feel ìt noisy, set the
l\4ode Selector SwiÌch( 9 ) at the "mono" position for
better reproduction. ln case of AM/LW programme from
other tuner there is possible trouble of modulation hum,
which can be eliminated bV varyinq the distance and angle
of these components.
OTHER TUNER
OTHER PLAYBACK
The signals of flat frequency response from such sources as
TV receivers do not need an equalizer stage, and for play-
back of such audio equipments any of these AUX termirrals
can be used, Connection arrd operation is same with that
of AM/FN/I broadcasting programme.
PLAYBACK FROM TAPE
TPLAYBACK FROM TAPE MONITOR TERMINALS
Almost all of tape-recorders, and tape-decks currently
markeled integrate audio pre-amplifiers in their circuit.
Also there ls a tape-player exclusively for playback' Con-
nect the output terminal (LINE OUT) to the Tape I\4onitor
Termìnals(39). Then set the Monitor Switch(11) at
the corresponding position and the playback from tape
is realized lf 2 tape-recorders are connected to the
Terminals(39), selection between 2 tape-recorders is
possible by the Monitor Switch(11). This amplif ier sectiot'r
can be devided into 2 sections - one before the Recording
Output Terminals(R EC. OUT) and the other after the
Tape lVonìtor Switch, and 3-head tape-recorder makes it
feasible to make recording with the former section and
simultaneously to make playback with the latter section.
Note lhat normal function cannot be expected if 2 sets of
tape-recorder for playback are connected to the terminals
of TAPE IVIONITOR-1 and Tape Connector(32) at the
same time, since these 2 are coupled in the inside circuit
and effect each other. Therefore if Tape Monitor Terminals
and Tape Connector are used the tape;recorders should be
connected to the terminals of TAPE MONITOR-2 and
the Tape Conrrector.
IPLAYBACK FROM AUX TERMINALS
recorder or tape-deck is connected to the AUX terminals of
this receiver by use of pin-jack lead and the lnput Selector
Switch is set aÌ the corresponding position to the AUX
Terminals. All operations ìn this case are same with those
for the Playback of Tuner. Note that when tape playback
is made thror.rgh AUX terminals, the line input or AUX
input terminals of the tape-recorder should not be con-
nected, lf connected to the Recording Output Terminals
(REC. OUT) of the receiver there wìll be possible oscilla-
tion by feed-back of signals.
IPLAYBACK FROM TAPE CONNECTOR
This connector is of DIN norm, and very convenient for
simple connection by a single patch cord between the
tape-recorder and recordit.rg/playback connectors of this
receiver" A DIN cord should be connected between DIN
connector of the tape-recorder and Tape Connector of this
receiver. Playback from Tape Connector is possible if the
Monitor Switch is set at the "deck-1" positlon.
RECORDING ON TAPE
In case of playback of various programme sources through
ìnput terminals of this amplifier, the same signals to these
reproduced ln speakers are available at the Recording
Outpu.t Terminals(38) and Tape ConnecÌor(32) if the
Tape Dubbing Switch is set at the "source" position.
By connection of these term¡nals to the ¡nput terminals
(AUX or LINE-lN) of the tape recorder you can enjoy
simultaneous recording and playback. These recording
signals are taken out before the Tape Monitor Switch and
there is no inf luence of such controls as Volume Controls,
Tone Controls and Fìlters etc.
TAPE DUBBING (Reprinting)
So called tape dubbing - tape-to tape reprinting is possible
wirh rhe Tape Dubbing Switch(10) Tape Dubbing is pos-
sible when the switch is set at the "up" (1 ro 2l or "down"
(2 ro 1) posìtion. At the "('1 to 2)" position connect
the LINE-OUT terminals of the tape-recorder with recorded
tape to the TAPE fVIONITOR-1(39) while the LINE-lN
(AUX) terminals of the second tape-recorder to the "REC.
OUf -2" (38), the tape dubbing is possible from the 1st .to
2nd tape-recorder: vise versa aI The "2 to 1" position'
Similarly tape dubbing ls possible between the TAPE
N/IONITOF-2 and rhe tape connector. ln the dubbing
process if the LIN E-l N terminals of the 1st tape-recorder is
connected to the "REC. OUT-I "(38) and the LINE OUT
of the 2nd tape-recorder to the "TAPE MONITOR-2"(39)
simple operation of the Monitor Switch(11) between
"deck-1 " and "deck-2" allows comparison between lhe
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10
Playback of tape is possible if the l¡ne output of tape
11

original sound and newly recorded one. Remember that
for reproductiorr of other programme sources than tape this
switch as well as the Tape fVonitor Switch(11) must be
set at the centre "sourcel' position.
lf there are 2 |ape-recorders reprinIing of tape is feasible
also by other method; Corrrrect the tape-recorder of betler
recording performance to the Recording Output Terlrritrals
and otlrer one to the AUX terminals exclusively for play
back setting the Input Selector Switch to the relevatrt
pos r tr on.
SIMULTANEOUS PLAYBACK MONITORING
3-head tape-recorder ensures Sìmultarreous Playback Moni-
toring enabling to ascertain perfect recording, In case of
3-head tape recorder heads and amplif iers for recording
and playback exist independently in the circr-rit which
ensures simultaneous recording on tape and playback of
the sourrd recorded on the tape.
ln this case recording on tape and playback of the recorded
sound is practised at the same time, and connection flrLtst
be made for both functions. Need to connect the Record-
ing Output Terminals(38) to the Line Input Termi-
nals (AUX Input) of tape-recorder, and the Tape Monitor
Termìnals(39) to the Output Terminals (LINE OUf)
of the tape-recorder and to set the Tape Dubbing Switch
at the "source" positon. The lv4onitor Switch (1 1 ) is
set at the position corresponding to the terminals lo which
the tape-recorder is connected, and repetition of switching
between "source" and "deck-1" or "deck-2" makes it
feasible to compare the original sound with recorded one.
Thus possìble recording error can be prevented ìn case ot
3-head tape-recorder. lnciderrtally note that reproductiotr
of recorded sound becomes a lirtle bit delayed as compared
with that of original sound since there is a gap between
recording head and plaVback head. Simultaneous Playback
IVonitoring can be made througl-r the Tape Connector(32)
as well. A single DIN patch cord ensures connection for
recording and playback, and simple operation of switching
between "source" and "deck',l" of the fVonitor Switch wìll
do.
SIMULTANEOUS RECORDI NG
This arnplif ier is provided with 2 sets of Recording Output
Terminals (REC. OUT) enabling to record simultaneously
on 2 tape-recorders. lf desired, combination recording on
open reel recorders and/or cassette recorders can be
enjoyed. lVoreover if the Tape Connector is used recording
on 3 tape-recorders is possible. Rernember that the Tape
Dubbing Sw¡lch(10) rrrust be set at the "source" position.
This facility is useful for safer printing or effective record-
ing etc. As the impedance at the Recording Output Termi-
nals is kept sufficiently low (about 100 ohms) , mutual
interference wi ll be almost nil between the recorders
under simultaneous operation.
ABOUT DIN TAPE CONNECTOR
The Tape Conrrector of this anrplifier is provided ¿rt the rear
panel lor convenient connection. This is of DIN norm.
As explained in the paragraph of Playback frorr Tape and
Recordirrg on Tape , if tape-recorclcr is equipped witlr DIN
connector, corrDeclion try a DIN patch cord suffices for
rccording arrd playback. See lo it that thìs connectiorr is
practised orrly by DIN COF D since tlte impedance at
Fecordir.rg OLrtpul Ter¡irlals is kept relatively hìglt at
B0 Kohms 1 20 Kohms.
OPERATION OF TONE CONTROLS
TSELECTION OF MODE (Conversion of Playback
Mode)
This arnplif ier is for stereophottic reproductiot-t arrd inte-
grates independent amplif iers f or 2 channels (right and left).
Without the IVode Selector the sìgnals fed to the right
channel terminal are reproduced at the right clrannel
speaker. The Mode Selector is placed between lhese
2 amplifiers to change the mode of reproduction.
connectlon
¡nput oulput
TCONTROL OF VOLUME
Sound volume can be properly adjusted by volume control
ln the attenuation characteristics turnìng angle is propor-
tionate to attenualion degree of dB, and the dB value and
the volume audible to human ears are in the porportionate
relation That is to day, the rotation of knob is in
proportion to the sound volume felt by human ears. The
increasing degree of volume is felt quite natural as the
knob is turned on to the clockwise direction.
TCONTROL OF VOLUME BALANCE
ln case of deviation between the volume levels of right and
left channels, adjust unbalanced volume level by the
Volume Control(12) The volume balance of both
channels can be adjusted so that monaural disc sound
reproduced by the stereo cartridge comes from the centre
of the right and left channels Usually the volume
level of both channels is adjusted identical at the straight
engraved llne on the knob. lf a programme source had
deviation of the volume level between 2 channels, establish
correct balance with this balancer.
ITONE CONTROLS
The ultimate purpose of the audio system is to make the
high fidelity reproduction of programme sources. The
reproduction conditions and circumstances do not always
match with record¡ng conditions, and it is impossible
to reproduce the same sound with the original one
Also there is no objective standard to judge good sound
from inferior one. The only possible solution is for
every listener to create hls favorite sound according to his
own taste. lt is therefore very important that the audio
system offers such facility to permìt flexible controls for
creation of the best sound. TH is receiver is equipped
wìth various tone controls for subtìe and minute control
of the reproduced sound such as Bass Level Control(17)
and Treble Level Control(19). and Liner Fq'alizer(16)
Bass Level Control is a tone control on frequency response
of low frequency range. lt is designed so that response
is flat at the electric centre point, and a clockwise turn of
the knob intensifies low frequency range while counter
clockwise turn yìelds attenuatlon For easy adjustmen
thìs control is equipped with 11 points of click stopper
IOPERATION OF LOW CUT FILTER
When this filter\21) is switched on the amount of low
frequencies you hear ls reduced sharpìy at the attenuatlon
rate of 12dBloct beìow 70H2. Useful for removal of ìow
frequency noise such as rumbling of phono motor Also
this can be used as an auxiliary control for Bass Level
Contro I .
IOPERATION OF HIGH CUT FILTER
When this filterl22) is swìtched on the amount of high
frequency range over TKHz is cut off at the attenuation
rate of 12dBloct. Useful for removal of scratch noise,
hissing noise of tape etc. Also this can be used as an
auxiliary control for Treble Level Control.
IOPERATION OF LOUDNESS
Because loudspeakers and ears generally respond less to
extreme high and low (treble and bass) frequencies as
volume levels are reduced, the LOUDNESS switch is
included to boost these frequencies and thereby provides
tonal compensation. Whether or not you use this switch
depends upon the levels at which you generally listen, the
kind of speakers you have, the room acoustics and a
number of other variables. Experimentation is the best
guide to using the LOUDNESS switch
ITHE LINEAR EOUALIZER
Although recordings are equalized in accordance with
B iAA standards, it is quite common to encounter variations
ìn overall tonal balance from one record¡ng to the next.
In addition, differences in listenìng environment and room
acoustics often require subtle degrees of tonal compensa-
tion that conventional tone controls cannot correct because
of their wide range and overlapping crossover characteristics.
THE LINEAB EOUALIZER control provides a new form
of tonal compensation specifically intended for subtly
augmenting regular tone controls. With the control in
its mid-position, f lat f requency response is achieved.
Switched to either of the two "up-tilt" posÌtions, the entìre
response curve ls rotated about a 1 KHz f ixed axìs so as
to linearly increase treble response whìle simultaneously
decreasing bass response. Conversely, selection of one of
the "down-tilt" positions rotates the response curve in a
clockwise direction, providing a gradual decrease of treble
response and simultaneous increase of bass response.
Degree of slope for either positive or negative settings has
I
I
l.
II
I
I
l
i
I
performance USE
knob posit¡on
R-R
L+L normal stereo
plavback for normal stereo playback
NORMAL
reversed stereo
playback when program source is
reversely connected
R R
L L
R EVE RSE
r¡ght and left
input signals
are ¡ntegrated
for monaural playback
of stereo program
t\¡tx R-B
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LIN E
IN LIN E OUT LIN E
IN LINE
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12 13

been carefully preset, and the overall response curve
maintains complete linearity from 50Hz to above 10KHz,
unlike the curvature in response normally associated with
ordinary tone controls Specif ically, when the control is
turned to the first "up-tilt" position it w¡ll decrease bass
and increase treble by 15dB at 'l 00Hz and l0KHz
respectively, while selection to the second "up-tilt" posìtion
will result in a 3dB cut and boost at these same frequencies.
Selection of the fìrst "down-tìlt" position wìlì decrease
treble and increase bass by i 5dB at the same reference
frequencies, while the second "down-tilt" position provides
3dB of boost (at 100H2) and cut (at 10KHz) Combined
use of the LINEAR EOUALIZEB and convenlional tone
controls provides a degree of tonal flexibility which cannot
be achieved with any other tone control arrangement
presently available Because of the inherently linear nature
of this new circuit, lt introduces no ìncrease of harmonic
distortion at any of its settings
Linear Equalizer "up-tilt"
down-tilt"
1
CURVES
POWER T.H.D. (BOTH CH. DRIVENI
eowea owrut(w) lo
POWER I.M.D
SELECTIVITY
AUDIO SECTION
FREOUENCY T.H.D. (BOTH CH. DRIVENI
L]NEAR EOUALIZER
FI LTER
RF SECTION
FM CHARACTBISTIC
TONE CONTROL
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LOUDNESS/LOW BOOST
DISTORTION
STEREO SEPARATION I
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15

SPECIFICATIONS
I AUDIO SECTION
GIRCUIT:
RMS POWER:
T.H.D.:
FREOUENCY RESPONSE:
POWER BANDWIDTH:
INPUT SENSITIVITY:
REC OUT:
EOUAL¡ZER CURVE:
PERMISSIBLE PHONO
INPUT VOLTAGE:
TONE GONTROL:
FI LTER
LOUDNESS CONTROL:
SPECIAL BRAND
NEW CONTROL:
S/N RATIO:
I GENERAL SPECIFICATIONS
POWER REOUIREMENTS:
POWER CONSUMPTION:
DIMENSIONS:
WElGHT:
Fully complementary direct coupled
D.C. output amp utilis¡ng dual rail
power supply
75/7swatts (8ohms, both channels driven
at rated dist., 20Hz-20KHz)
( o.osg¿ (8ohms, 20Hz-20KHz at any
power level below rated output)
1SHz - 35KHz (*1dB)
SHz - 75KHz (:3dBl
SHz - 40KHz (0.1%, -3dBl
PHONO 1, PHONO 2 2.7mV
(at 7SWatts, Sohms)
AUX 1,2 150mV
(at 7swatts, 8ohmsl
TAPE MONITOR 1,2 150mV
(at 75Watts, Sohms)
MlC. 2mY
(at 75Watts, Sohmsl
RCA type pin-plug 150mV, lO0ohms
DIN pin-plug 3OmV,9OKohms
R.t.A.A.
¡ FMSECTION
IHF SENSITIVITY:
SENSITIVITY FOR
SOdB S/N:
ULTIMATE S/N:
THD, MONO:
STEREO:
ALTERNATE CHANNEL
SELECTIVITY:
IF REJECTION:
¡MAGE REJECTION:
SPURIOUS RESPONSE
REJECTION:
AM SUPPRESSION:
CAPTURE RATIO:
STEREO SEPARATlON:
MUTING THRESHOLD:
STEREO THRESHOLD:
FREOUENCY RESPONSE
(MONO AND STEBEOI:
I AM SECTION
1.8¡¡V
3.4ttV
70dB
0.3% (at 400Hzl
O.4/o lal OOHzl
70dB
90dB
90dB ,
ì
1 30mV at 1 KHz
LUX type turnover frequency selector
3KHz 1OKHz (t1O.SdBl
lreble: 6KHz 10KHz (t 7.0dBl
- 150H2 100H2 l+ 7.0d8)
Bass: 300H2 100H2 (t1 1.OdBl
Low cut TOHz 12dBloct.
High cut 7KH2 12dB/oct.
100H2 +9d8, loKHz +6dB
30 to r5,oooH.!\;.2u da
Linear Equalizer (5 steps)
Phono 1,2 )00¿g
Aux 1,2 >90d8
Tape monitor 1,2 >90d8
Mic. >60d8
(o.gmv; g9og
Head-phone Jack, Mode Selector
(stereo-stereo rev-mono)
Speaker selector (A, B, C, A+8, A+C,
OFFI, Dual monitor circuit (useful for
tape to tape dubbing)
Proteetion c¡rcu¡t for amp & speaker,
Mic Maxing, Stereo only sw¡tch, AM noise
f¡lrer. AC outlet, Volrage selÊctor {100,
12O, 22O, 240v), De-emphas¡s sw¡tch
(50/75f¡secl, (These last three accessories
ârê for E Model only)
s 220v, u 120v, E (100v. 120v,220v,
240V1 50-60H2 AC
350W lat rated output)
(W) 520mm l2Ù4l5"l x (D) 346.5mm
113-415"1 x (H) 152mm 16-415"1
l9.5kgs (43-113 lbsl
16

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tUX CORPORATION, JAPAN
HEAD OFFICE & FACTOFY 1]831 NAGAHASHI. NISHINABI.KU, OSAKA
PHONES:032 0031 CABLE: LUXELECT OSAKA
TELEX : J63694
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