Step 9
– Neatly route this twisted wire pair to the 9 pin preamp
tube socket on the opposite side of the speaker jacks (socket
V2). Trim wire to length, strip and tin these ends and tack them
in place to pins 9 and pins 4 and 5 of this tube socket (photo
6.24d).
Step 10
– Untwist 1” from the cut ends of the twisted pair
wires. Strip and tin these ends and solder (along with other
wires) to pins 9 and pins 4 and 5 of the above preamp tube
socket (V2).
Step 11
– Neatly route the twisted wire pair to the next 9 pin
preamp tube socket (V1). Trim to length, strip and tin these ends
and tack them in place to pins 9 and pins 4 and 5 of the first tube
socket (V1).
Step 12
– Take two 100 ohm resistors and twist the two leads
together (photo 6.24e).
Step 13
– Bend the end of the other two opposite leads of the
resistors away from each other (6.24e).
Step 14
– Connect these two bent resistor ends along with the
filament wires to pins 9 and 4/5 (photo 6.24f) and solder.
Step 15
– Trim the twisted ends of the resistors to half their length
and bend a small loop in these twisted ends.
Step 16
– Cut a 3” length of black wire. Strip and tin both ends.
Step 17
– Solder one end of this black wire to the loop of the two
resistors (photo 6.24f).
Step 18
– For the standard tube socket mount, solder the other end
of this black wire to the solder tab mounted to the screw of the
preamp tube (photo 6.24f). For shock mounting of preamp tube,
this black wire is soldered to the terminal connected to the corner
mount of the PC board (photo 6.24g).
Proceed to 6.25
Installing the AC Power Cord
Step 1
– locate the cut end of the power cord
and strip off the outer
black PVC insulation approximately 7 1/2” from the end.
Step 2
– With the three wires (white, green and black)
exposed, trim the white wire to a length of 5”, the green wire to
4” and leave the black wire at 7 1/2” length.
Step 3
– Wrap the strain relief around the black PVC jacket of
the power cord approximately 1” from
where the stripped jacket begins.
Note the alignment of the strain relief
(photo 6.25a).
Step 4
– With a pair of slip joint pliers,
firmly squeeze the strain relief into
place around the power cord then
grasp the strain relief and feed the stripped end of the power cord wires into the
24 TubeDepot.com
The black PVC jacket of the power cord is thin and very easily cut. Be very careful not to cut
so deep as to accidentally cut the insulation of the inside wires.
CAUTION
6.25
photo 6.25b
photo 6.24e
photo 6.24f
photo 6.24g
photo 6.25a
Содержание Tweed 5E3+
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