Luxman CL-35-Mk3 Service Manual
ULTIMATE
HIGH
FIDELITY
STEREO
COMPONENT
[l[]]OOOO[)G[jO
SERVICE
CL35 /m
CONTROL CENTER
MANUAL
CIRCUIT
'.
DESCRIPTION
non ieverted
in put
1/2
1/2
12AX7
ECC83
1/2
12AX7
ECC83
12AU7
ECC82
200V
2«JV
which
A-2
NFis14dB.
side.
special
has
+39dB
Local
2",H
fig. -1
Equalizer Amplitier
The
circuit
explanation
Fig.
2 shows
and
At
A-I
feedback
Therefore
A-I
At
is
therefore
the
output
by 2.2M
load
is
shown
its
the
in
is
made
concept,
the
gain
impedance
ohms
gain
is
120K ohms and
inverted
input
the
Fig.
hereunder.
wherein
is
is
can
+25dB
1.
This
amp
A-3 means
+39dB
be
gain
thru
110K ohms by means
stipulated
thru
is
A-2 and A-3.
as
and
A-2
+32dB, and
t------;jw~~::l
has
not
cathode-follower
th~
A-3, and
Fig.
standard
of
electric
formula
input
therefore
3 shows
l.OK
method
with
feedback
total
Beta=1/19.8
impedance
the
R.I.A.A.
Signal
out
put
of
Feedback,
its
gain
from
and amount
becoms
gaLnis57dB.
complex.
about
at
OdB.
cathode
ohms.
The.
While
of
the
210K
flg.-2
fig.-3
total
NF
shall
cut-off
of
triode
frequency
distortion
~
,.
..
\~PF
II II
l;~F
2201<
."
330lPF
rr
220PF
II
..
position
position
~
phono
MlC
small
point
balance.
This
amp.
well.
signals.
lies
it
below
at
plays
is
the
not
be
of
possible
the
sensing
The
present
total
the
role
levied
50Hz.
to
distortion
of
below
In
suppress
level
operation
mic.
the
amp.
the
case
under
the
as
non
input
inveried
in~ut·
fig.-4
Fig.
The
feedback
circuit.
while
inverted
0-----11-
o--~r-1IH
4 shows
At
at
the
1/2
12AX7
ECC83
.--------_------Cl
the
circuit,
circuit
the
()
G)
position
is
position
where
shown
cut-off
1/2
12AX7
ECC83
in
roll-off
1/400V
the
2nd
Fig.
commences
5.
takes
stage
~ow
+21OV
output
is
Frequency
place
at
constituted
at
100Hz
Trimmer
100Hz
and
by
and
roll-off
82K
fig.-5
dual
operation
cut-off
starts
amps
18K
takes
of
is
at
10K
local
donebythe
220Hz.
place
feedback.
feedback
at
250Hz,
Signol
input
1/2
12AX7
25lJ<.
B
10001<
fig.-6
fig.-]
~271'
ECC83
Signnl ovtp'ut
140V
Signal
1/400V
'"
§
l.
05mA
output
~
~
245V
Low
Cut
As
per
composed by
This
set
volume,
the
5th
(-6dB)
Tone
MadeofLUX's
All
This
with
operation
depends
of
Filter
Fig.
filter
decrement
.
Control
circuits
is
LUX
grid
7.
this
2-stage
frequency
and
the
standard
amps.
of
on
current.
is
coupling
standard
from
exclusive
are
shown
tone
Incidentally
tubes
distortion
-12dB/oct.
depends
the
max.
at
of
point
control
this
and
CR.
on
the
position
NF
in
filter
lies
Fig.
level
type.
stage
level
6.
at
"
2
?45V
"
fig.-S
Signa~
o----c)-.M)-----f--------1I------<O
input
5.6K
4.7K
4700P
Signal
'Jutp.Jl
92rnH
S~~~pa~t
~':!!2'!!_~~2.:.
Composed by
The
bias
of
zener
level
~~~~-g,!!_~~~!~::
Shown by
means
decided
(main
by
of
input
cathode-follower
fixed
is
reduced
is
high
cut
Fig.
9,
LC.
The
inview
impedance
of
at
filter.
and
filter
load
this
down
attenuates
and
and
as
stage.
to
the
frequency
lOOK
shield
per
Fig.
Noise
aliowable
-12dB/oct.
is
ohms
wire).
8.
+ 200pF
by
270P
1.2K
470K
fig.-9
~~g~:l
0--II-.Mf'-~-+___I(
p
2.2/22K
t---t--N'I--+-:-::C::c-1--lII---r--G
6.52V
Signol
output
Ql
Q3;2SC1222
Q2
;2SAMO
Q4 ; 25C375
Q5 ;2SA562
Fig.
10
shows whole
which
is
made
direct
coupled
complementary
Q2
retains
load
yields
100rnW
triggered
the
into
by
pure
SEPP
the
fixed
byQ3and
output
8 ohms.
circuit,
whole
stage
configuration.
current
of
about
fig.-lD
3
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