Wiring the Impedance Selector
Step 1
– Aligned with impedance selector with the common terminal pointing up and away
from the V5 tube socket directly underneath.
Step 2
– Bend the bundled output transformer wires away from the chassis out to the
terminals of the impedance selector.
Step 3
– Cut the orange, yellow, and green wires to the
appropriate lengths to reach their appropriate terminals.
Strip and tin each end.
Step 4
– Solder the yellow wire (4 ohm tap) to first
terminal. The one closest to the common terminal.
Step 5
– Solder the green wire (8 ohm tap) to the second
terminal going counter clockwise from the common
terminal.
Step 6
– Solder the orange wire (16 ohm tap) to the third
and final terminal.
Step 7
– Take the 18AWG wire previously wired to the
“tip” terminal of the nearest speaker output jack and
solder it to the common terminal of the speaker
impedance selector.
Step 8
– Neatly organize all wires against the chassis.
Initial Wiring of the Normal Channel Inputs Jacks
Step 1
– With the two normal jacks temporarily installed into the vibrato channel position,
5.28
With the EF86 preamp tube mod, the input wiring is different than below. Refer to the “Cool
Modifications”, Chapter 11 for proper wiring..
MOD
5.27
To ease the assembly of the normal channel input jacks, I recommend temporarily installing
the jacks in the more spacious vibrato channel position for soldering and assembly.
NOTE
photo 5.28a
26 TubeDepot.com
photo 5.28b
photo 4.3d
