degree bend in the twisted pair from the chassis edge in line with pin 5 of the V5 socket.
Step 57
– Cut the wire pair approximately 1 1/2” inch from the chassis edge where the 90
degree bends are and lay the remaining wire pair to the side.
V5 wiring
Step 58
– Untwist the wires approximately 2” from the cut end and run the red wire tightly
from the chassis edge to terminal 5 of V5. Reform the 90 degree bend as necessary to
maintain uniformity.
Step 59
– Cut the red wire to length and strip and tin the end. Install into terminal 5 but do
not solder just yet.
Step 60
– Run the black wire tightly from the chassis edge and up to terminal 4 of V5.
Reform the 90 degree bend as necessary to maintain uniformity.
Step 61
– Cut the black wire to length and strip and tin the end. Install into terminal 4 but do
not solder just yet.
Step 62
– Collect the wire pair previously laid to the side. Measure this remaining twisted wire
pair to make sure there is at least 9” left. If less than 9” do not use this wire (too short).
Instead, twist together 10” of red and black wire.
Step 63
– With the remaining twisted pair, untwist 1” and strip and tin both the black and red
wires of this pair.
Step 64
– Insert the tinned end of the red wire into pin 5 of V5 and solder along with the
previously installed red wire. Try to apply as little heat as possible (solder quickly) so that the
insulation doesn't contract / melt too much.
Step 65
– Insert the tinned end of the black wire into pin 4 of V5 and solder along with the
previously installed black wire. Try to apply as little heat as possible (solder quickly) so that
the insulation doesn't contract / melt too much.
Step 66
– Make two sharp 90 degree bends in these two wires at the chassis edge and lay
along this edge.
Step 67
– Bring the twisted wire pair out from the chassis edge between V5 and the can
capacitor pressed tightly against the chassis and all the way to the front panel. Leave like this
for now.
Wiring the V6 Rectifier Tube Filament and HV
Step 1
– Untwist the two solid red wires and the yellow wire and
white wires from the transformer wire bundle.
Step 2
– Tightly twist the yellow and white wires together. Pull
these wires over to the chassis edge and neatly run them along
the edge and corner to the V6 tube socket. Cut to the appropriate
length at terminals 4 and 5 of this socket.
Step 3
– Strip and tin these two wires and solder the yellow wire
to pin 4 and the white wire to pin 5 (photo 5.11a).
Step 4
– Tightly twist the two red wires together. Place these wires along the same path as
the above yellow and white wires.
Step 5
– Untwist the wire ends and so that one end reaches terminal 1 and the other red wire
reaches terminal 7 of the V6 socket. Trim wire to the appropriate lengths (photo 5.11a).
5.11
If installing an OCTAL rectifier instead of the 9 pin EZ81, the filament wiring for the OCTAL
socket is different than described below. For proper wiring, see “Cool Modifications”,
chapter 11.
MOD
photo 5.11a
TubeDepot.com 19
