Technics SB-G400 User Manual

SB-G400/K, SB-G500/K:
-SB-G500
sch ic di be modified at
= SCHEMATIC DIAGRAM {Te seremeneaetscy
@ CIRCUIT BOARD
TO SPEAKER TERMINAL
To SPEAKER TERMINALED
Ve
Praag ter
Pe Tae
ae ah
.
&
re 2
Late Nears
TO TWE
> TO TWEETE
> ¥O SUPER TWEETE
> VO SUPER TWEETES
> TO SUPER TWEETE
TO SUPER TWEETE
~TO MIDRANGEO |
. -. Pe igs ot a : ee: ‘ '
a Le a Cle : ‘ t eh Ep . .
. oe Aine . ; . i
EE, tet ee RY, 40 0e EE - OP eee. + ee “om, :
. a x Sere i . cae See : F ees
ae rae dic . 2+ : ?
/ sediinomtiiies OF YOUR SPEAKER SYSTEM
The
sound
reproduced
by
@
speaker
system
Ie
eatily
(tr
. Sluenced by such factors as s9Om acoustics and the place
where it is placed in the room. Before finally deciding upon
“near
@
Corner
of
near
@
wall,
the
level
of
the
bass
sound
|
_
willl
be
increased
by
the
seflectlons
of
the
sounds
from
a the place where the speaker systems are to be placed,
please carefully read the following information.
® In general, if a speaker system Is placed on the floor,
' "+. the wall and floor. Consequently, it is possible to adjust
B oi
a
' the bass sound to some extent by changing the distance —
. between the speaker systems and the wall and/or floor.
Determine the location of the speaker systems which -
gives the best sound reproduction, therefore, depending
~ upon the actual conditions of the room in which they
are to ba used.
oe ; @ If the speaker system faces toward @ hard wall or a glass
8 heed meas the record player, and should never be -
- placed on the same table or shelf as the record player. it -
onal oar
. om:
amma
cee ae ae -
came .
? ‘ its
7 CONNECTING THE SPEAKER SYSTEM
and the pecors pleyer.
is
¢
door or window, it |s recommended that curtains or
‘shmiter materiel be used in order to prevent undesirable
vesonance and sound reflection, especially of the treble |
sound.
Vibrations from the speaker systems may be transmitted
to a record player, causing acoustic feedback (“howling”).
For best results, the speaker systems should not be
is often very effective, in order to prevent “howling”, to
., Place a thick plece of felt beneath se speaker systems
“¢
Be sure to tum off the power of the amplifier mae
. Connecting the speaker systems to It.
SB-G400 |
SB-G500
¢ thick wire ts used, make the connecilon a ieee in
figure tb.
\
0. Serige wtraeut Zar (8° 9 Gl the tMisutations frase she wire,
and then twist the core.
2. Remove the terminal knob by turning it counterclock-
wise,
insert
the
core
wire
through
one
of
the
notches
on
the
terminal
base,
pass
it
clockwise
around
the
screw,
_ and
out
from
the
other
notch.
3.
Put
the
terminal
knob
back
on
the
screw,
and
tighten
it
“by turning it Sone
Be sure that the core } wires don’t touch each other.
a POWER- HANDLING CAPACITY
The power-handling capacity of this unit Is Indicated In the
specifications, and is determined according to the tempare-
ture increase of the voice coils.
tf the amplifier to be used has an output power which
exceeds the power-handling capacity of this unit, be sure
that the amplifier’s volume control is set so that exces-
sive input Is not applied to the speaker system.
Even if the amplifier to be used has an output power
which is less than the power-handling capacity of this
unit, the output of the amplifier will become distorted
and excessive input will be applied to the speaker units,
especially for the middle and high frequencies, if the
The impedance of this speaker system is 8 ohms. Be sure
that the toad impedance of the satel to be used is 4
~ 16 ohms.
The Input terminats of this unit are on the sear + surface .
of the enclosure. The polarity (+ and —) of each Input
terminal is indicated. When connecting speakers wires: .
from the amplifier, be sure that the left and sight con- |
nections and the plus and minus connections are made ;
. gorrectly.
When speaker connection wires are connected to the |
- “system input” terminals, make the connections as shown |:
in figure ta.
AL
Strip about 10mm(1/2”) of the insulation from the wire,
and then twist the core,
2. Loosen the terminal knob by turning it counterclock-
. wise 2 or 3 times. Insert the wire into the hole on the
— knob until the core cannot be seen. ;
3. Tighten it by turning it clockwise. . a '
- Input signals to the amplifier are too large or the ampll-
fier volume level is too high. Also note that higher-
than-normal power is applied to the speaker systems if .
the tone controls of an amplifier or a frequency equalizer
are used to raise the level of bass and/or treble sounds.
When adjusting the volume level, therefore, do so with
great care: confirming that amplifier output is not dis-
torted.
The power-handling capacity of this unit is set for sepro-
'
duction
of
ordinary
music.
tf
an
oscillator
or
test
record
is used to produce a continuous signal such as a sine
ce
wave,
etc.,
a
signal
exceading
2
watts
must
never
be
applied.
Usually,
1
watt
of
sine
wave
is
enough
to
test
a
speaker
system
when
an
oscillator
of
test
disc
is
used,
If
the
following
special
types
of
signals
are
applied
to
the
speaker
system,
be
sure
to
reduce
the
volume
level
of
the
amplifier.
1. interstation hiss on the FM broadcast band. -
2,
Output
from
a
tape
deck
dusing
fast
forward
or
rewind.
. Acoustic feedback from @ microphone or an ene
musical instrument.
- “Shock” nolse which occuss when input or output
Connaction
cords
are
connected
or
disconnected
or
when
8
Laeaieg
cortridge
ls
seplaced.
~~ =
- 7
. ¢

Technics SB-G400 Specifications

General

Brand	Technics
Model	SB-G400
Category	Stereo System
Language	English