Wiring the Speaker Output Jacks
Step 1
– Cut two 2-1/2” lengths of 16 AWG buss wire.
Step 2
– Thread the first length through all four
“sleeve” terminals of the mounted speaker jacks and
solder in place at the farthest end away from the
impedance selector.
Step 3
– Thread the second length through all four “tip”
terminals of the mounted speaker jacks and solder in
place at the farthest end away from the impedance
selector.
Step 4
– Tightly press the speaker output wires from
the output transformer against the chassis and pull
them directly to the area between the impedance
selector and speaker output jack. Press and bend
these wires against the chassis.
Step 5
– Untwist the black wire from this bundle just
enough to reach the “sleeve” terminal between the
output jacks (photo 5.26a).
Step 6
– Cut this black wire to the appropriate length and strip and tin the end of this wire and
insert it into the open sleeve terminal between the two output jacks (photo 5.26a).
Step 7
– Cut a 10” length of 18AWG black wire and strip and tin one end.
Step 8
– Insert the tinned end of this wire in the open sleeve terminal nearest the impedance
selector (photo 5.26a).
Step 9
– Solder the 16 AWG buss wire in the two remaining “sleeve” terminals.
Step 10
– Neatly run the remaining
length of the 10” wire along the
chassis to the common chassis
ground at the can capacitor.
Step 11
– Strip and tin the end of
this 18AWG wire and solder it to this
common chassis ground nearest the
solder terminal end of the buss wire.
Step 12
– Cut a 4” length of 18AWG
black wire and strip and tin both
ends 1/4”.
Step 13
– Insert one tinned end of
this wire in the “tip” terminal nearest
the impedance selector of the output jacks and solder in place.
Step 14
– Solder the 16 AWG buss wire in the two remaining “tip” terminals. All eight
terminals of the speaker output jacks should now be soldered (photo 5.26b).
5.26
For improved tone control of the output stage, the “Tone Cut” mod can be installed in place
of one of the speaker out jacks. Refer to “Cool Modifications”, Chapter 11 for more
information.
MOD
photo 5.26b
TubeDepot.com 25
photo 5.26a
