Specifications
11
12
13
14
15
16
17
18
19
20
21
22
23
(S).
Connect
the
blue
lead to
pin
#3
of
V3
(S).
Connect
the
green
lead
to
pin
#4
of V3.
Connect
one
end
of a 10,000
ohm
(brown-black-orange) resistor to lug
#5
of
the
five
lug
strip.
Connect
the
other
end
to lug #1 of
the
10,000
ohm
bias po-
tentiometer
(S).
Connect
the positive
(+)
end
of
the
selenium
rectifier
to
lug
#4
of
the
five
lug
strip
(S).
Connect
the
negative
(-)
end
to
lug
#5 of
the
strip.
Connect
the
negative
(-)
end
of a 50
mfd
bias
capacitor
to lug
#5
of
the
five
lug
strip
(S).
Connect
the
positive
(+)
end
to
lug
#3
of
the
strip.
Connect
the
positive
(+)
end
of
the
other
50
mfd
bias
capacitor
to
lug
#3
of
the
five
lug
strip.
Connect
the
other
end
to
lug
#2
of
the
10,000
ohm
bias poten-
tiometer.
Connect
one
end
of a
short
piece of wire
to lug
#2
of
the
five
lug
strip
(S).
Con-
nect
the
other
end
to
lug
#3
of
the
strip.
If
the
amplifier is
to
be
used
with
a
Dy-
nakit
PAM-1
(monophonic)
preampli-
fier,
this
wire
should
be'
omitted
and
lug
#2
soldered.
Connect
one
end
of a 10,000
ohm
(brown-black-orange) resistor
to
lug
#3
of
the
five lug
strip
(S).
Connect
the
other
end
to
lug #1 of
the
strip.
Connect
one
end
of a
4%"
wire
to
lug
#1 of
the
five lug
strip
(S).
Connect
the
other
end
to lug
#3
of
the
bias control
potentiometer
(S).
Connect
one
end
of a 2
1
h"
wire
to
a
mounting
lug
(ground
lug)
of
the
filter
capacitor
(S).
Connect
the
other
end
to
solder
lug
at
mounting
screw of
the
five
lug strip.
8trip
Ih" of
insulation
from
each
end
of
a
5"
wire.
Feed
one
end
through
pin
#8
of
socket
V2
(8)
and
connect
to
pin
#1
(S).
Feed
the
other
end
through
pin
#8
of
socket
V3
and
connect
to
pin
#I.
Connect
one
end
of a 2" wire
to
pin
# 1
of V3
(S).
Connect
the
other
end
to
pin
#8
of
power
takeoff
socket
(on
front
side
of
chassis)
(8).
Connect
one
end
of
the
13.5
ohm
resistor
to
pin
#8
of V3
(8).
Connect
the
other
end
to
ground
lug
of
socket
V3
(8).
SEE
PICTORIAL.
Connect
one
end
of a
3"
wire to
pin
#8
of
socket
VI
(8).
Connect
the
other
end
to lug #1 of
the
quad
filter
capacitor
(8)
.
Connect
one
end
of a 4" wire to
lug
#1
of
the
four screw
terminal
strip
(8)
.
24
25
26
27
28
29
30
31
(!>
(v)
Connect
the
other
end
to
ground
lug
at
the
five lug
strip
(S).
Twist
together
a
pair
of 5" wires
and
connect
one
end
of
one
to
pin
#2
of V2.
Connect
the
corresponding
end
of
the
other
to
pin
#7
of V2.
Connect
one
of
the
other
ends
to
pin
#2
of V3,
and
con-
nect
the
last
one
to
pin
#7
of V3.
Twist
together
a 5
1
h"
and
a
4%"
wire
so
that
one
pair
of
ends
are
uneven.
Connect
the
even
pair
of
ends
to
pins
#1
(S)
and
#2
(S)
of
the
power takeoff
socket.
Connect
the
long
end
to
pin
#2
of V3
(S).
Connect
the
remaining
end
to
pin
#7
of V3
(S).
Connect
one
end
of a 10
ohm
(brown-
black-black) resistor
to
pin
#3
of
the
power takeoff
socket
(8).
Connect
the
other
end
to
ground
lug
at
that
socket
(S)
.
Connect
one
end
of a 22,000
ohm
resistor
(red-red-orange)
to
pin
#5
of
the
power
takeoff
socket
(S).
Connect
the
other
end
to
pin
#4.
Connect
one
end
of a
5%"
wire to
pin
#4
of
the
power takeoff
socket
(8).
Con-
nect
the
other
end
to filter
capacitor
lug
#4.
(See
application
notes if
other
than
DYN
A
preamp
is to
be
used.) .
Mount
the
printed
circuit
board
in
the
cutout
at
the
end
of
the
chassis.
Note
that
the
socket
is
located
nearest
the
end
of
the
chassis.
The
board
should
be
mounted
from
the
bottom
of
the
chassis
with
#4
screws,
nuts,
and
lockwashers.
The
eyelets on
the
printed
circuit
board
already
have
solder
in them.
Each
eyelet
has
a
number
which
will be referred to
in
the
instructions. Before
making
a connec-
tion
to
the
board,
"tin"
the
stripped
wire
to
be
connected
by
heating
with
the
sol-
dering
iron
and
touching
solder
to
it.
To
solder
to
the
eyelet,
heat
the
eyelet
with
the
iron,
insert
the
wire
when
the
solder
in
the
eyelet
flows, remove
the
iron
and
allow a few seconds for
the
solder
to set. .
Although
the
metal
eyelet
does
protect
the
printed
wiring from overheating, a
small
iron
should
be
used
to
avoid exces-
sive
heat
on
the
printed
circuit
board.
Connect
one
end
of a 2" wire to
eyelet
#1
of
the
circuit
board
(S).
Connect
the
other
end
to
the
ground
(short)
lug
of
the
inpu
t
socket
(S).
Connect
one
end
of a 2" wire
to
input
socket
long lug
(S).
Connect
the
other
end
to
eyelet
#2
(8).
Twist
together
a
pair
of 6" wires. Con-
nect
one
end
to
pin
#2
of V2
(S).
Con-
nect
the
other
end
to
pin
#7
(S).
Connect
one
of
the
other
ends
to
eyelet
#4
(S).
Connect
the
remaining
end
to
eyelet
#5
(8)
.
3