Installing The Heater Wires - StewMac ’64 REVERB UNIT Assembly Instructions Manual

Installing the heater wires

POWER
STEP 72
Connect to the pilot lamp
Cut two 8-1/2" green jumpers and
twist them together, leaving one
inch of untwisted wire on each side .
Wrap the two wires from one side of
this twisted pair through the two lugs
of the pilot lamp assembly . Solder
these leads into place with the two
100Ω resistors and the green power
transformer leads .
How to REDUCE THE HUM
These heater wires carry AC voltage that will cause hum if they get too
close to wires that carry the signal . These tips minimize that hum .
Twist the wires tightly
This reduces hum, the way
opposite-wound coils do in a
humbucking pickup . Twisted
wires are easier to route away
from signal wires .
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FUSE PILOT LIGHT
STEP 73
Connect to tube socket V3
Cut two 6" green jumpers . Twist them
together very tightly and leave about
1" of untwisted jumpers on both sides .
Take 1" of the new jumper and twist it
in with 1" of the jumper coming from
the pilot lamp assembly . Twist the
other ends of 1" untwisted jumpers
together . Solder one twisted pair
into pin 7 of socket V3 and the other
caused by AC voltage
Route them out and away
Let these wires stick out about
an inch from the socket before
bending them . This keeps the
heater wires from mingling
with the signal wires .
DWELL INPUT
REVERB IN
V3
6V6
27
MIX TONE OUTPUT
REVERB OUT
V2
12AT7
FOOTSWITCH
twisted pair into pin 2 of socket V3 .
Run these twisted pairs up an inch
from the tube socket and turn them
at a 90° angle toward the V2 socket .
On the remaining V1 and V2 sockets
(both 9-pin tube sockets), twist pin 4
and pin 5 toward each other so that
their eyelets line up . Be very careful
while doing this as these pins are
delicate .
V1
12AX7
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