Heathkit W-5M User Manual

)
Install
three
dual-lug
terminal
strip
J
and
2
-lug
terminal
strip
K
between
sockets
V3
and
V4.
Use
6-32
hardware.
(
)
Install
one
dual-lug
terminal
strip
N
as
shown
in
Figure
8. Use
6-32
hardware.
( )
Directly
above
terminal
strip
N,
there is
a
staggered
row
of four
holes.
Using
the
fourth
and smallest
hole,
mount
3
-lug
terminal
strip
P,
using
6-32 hardware.
(-
)
in
each
corner of
the chassis,
you
will
find
a
group of
three
holes. In
these
locations,
Wl,
W2,
W3
and
W4,
mount
the
four
cover
spring clips,
using
4-40
pan
head
screws,
lock-
washers and nuts.
(—
)
On the
front
apron of
the
chassis,
mount
the
phono
connector
socket
at
location
Y,
being
sure
that the
ground
lug
is
to
the
left,
nearest
the
end of
the
chassis.
Use
6-32
hardware.
(-
)
Cut
four
lengths
of
insulated
sleeving
(spaghetti)
to
a
length
of
3/8"
each.
Identify
the
mol-
ded
4
-terminal
speaker
connector
block.
Slip
a
length
of
sleeving
over
each
of
the
solder
lugs, so
that
1/8"
of the
tip
of the
lug
is
exposed.
T
)
Mount
the
connector
block
at
location
Z
using
the
four
6-32
x
1/2"
screws.
)
Mount the
remaining
octal
socket
at
location
AA
on
the
front apron.
Position
the
keyway
nearest
the
edge
of
the
apron.
Use
6-32
hardware.
<
(
C
,
<
)
i-J
Mount the
dual tip
jack
strip
BB,
inside
the
chassis.
Install
AC
outlet
CC
nearest
the bend,
using
6-32
hardware.
Install
AC
outlet
DD
directly
above
in
the same
way.
Following
Figure
9,
mount
the fuse
holder
at
EE.
Position
the
contact
lugs as
shown
in
Figure
8.
Install
the fuse
in
the
holder.
Install
the.
300
"Bass-Bal"
control at
D.
Follow
Figure
10
for
assembly
details
and
orient
terminals
as
shown
in Figure
8
.
Identify
the
power
transformer,
the
largest
of
the
three
metal
cased
components.
Note
that
the
leads
come
out in
two
groups,
one
containing red,
red-yellow
and
yellow
wires;
the
other
containing
black,
green
and
green
-
yellow wires.
Pass
the red,
red-yellow
and
yellow wires
through
grommet
S
and
the
other
group
through
grommet
T.
Secure the
transformer to
the chassis,
using
six
8-32
screws,
lockwashers
and nuts.
CONTROL
SOLDER
LUG
OR
LOCKWASHER
_
-PANEL OR
CHASSIS
FLAT
WASHER
NUT
CONTROL
MOUNTING
Figure
10
( )
Identify the
filter
choke,
the
component
with two wires
coming
through a
single
bushing
.
Pass
these
wires
through
grommet
R
and secure
the choke
in
place
with
8-32
hardware
through the
four
corner
holes
in the
mounting
flange.
( )
Now
install
2-lug
terminal
strip
Q,
placing a
6-32
screw
through
the
choke
flange,
chassis
and
strip
bracket,
as
shown in Figure
8.
( )
The
remaining
metal
cased
component is
the
output
transformer.
Through one
bushing ex-
tends
a
group
of five
leads,
color-coded
red,
brown,
brown-white,
blue and
blue-white
.
Pass
this
group
through
hole
M
and pass
the
group
of
four
leads
through
hole
L.
Secure
the
transformer
to
the
chassis,
using
four
8-32
screws
driven
directly
into the
tapped
inserts
of
the
transformer
case. Use
lockwashers
under each
screw
head.
f
)
identify
the
20-20-20
jxfd
450 volt
filter
condenser.
This
is
the
metal
can
with three
termin-
als
protruding
through
the
insulating
wafer
at
one end.
Note
that
each terminal is
identified
by a
symbol
punched
through
the
insulator
adjacent
to
the
lug.
Orient
these
terminals
as
shown
in Figure
8,
slip the
four
mounting
lugs
through
the
slotted
holes in the
wafer
at
G
.
Then
twist
each
lug
approximately
45°
to
secure
the
condenser
to the wafer. Be
sure
the
condenser
is
held
firmly
against
the
wafer
while
twisting
the
lugs.
( )
In
the
same
way,
mount
the
40-40
fifd
450
volt
filter
condenser
at
H.
Again,
orient
the lugs
as
shown
in
Figure
8
before
twisting
the
mounting
tabs.
This
concludes
the
mechanical
assembly
of
your
Heathkit
model
W-5M
Amplifier.
Page
14

Heathkit W-5M Specifications

General

Brand	Heathkit
Model	W-5M
Category	Amplifier
Language	English