10
SECTION 5 – Connect the DC Power Components
Please refer to DRAWING 5 and DRAWING 6.
Locate the battery snap connector. Connect
and solder the red lead to the positive-switch
lug of the power adapter jack.
RING LUG
GROUND LUG
TIP LUG
Input Jack
Connect and solder the black lead to ring lug on the input jack.
CENTER-PIN LUG
POSITIVE-SWITCH LUG
POSITIVE LUG
Power Adapter Jack
Connect the positive lead of the remaining 220
µ
F capacitor to the
positive lug on the adapter jack (do not solder here, yet). Connect
the negative lead of this cap to terminal #1.
Positive
End
220
µF 50
V
Cut a 4 ½” length of wire. Strip ¼” insulation from each end. Wrap one end around the positive lug of
the adapter jack (same terminal as the 220
µ
F capacitor). Now solder this connection and make sure
the positive capacitor lead and wire end are not touching the nearby adapter jack lugs.
Connect the other end of this 4 ½” wire to the lower hole terminal #17.
SECTION 6 – Wiring Connections in the Vacuum Tube Section
Terminals #5 & #12
1) Strip and tin a 2" piece of wire and connect:
Suggestion:
Connect to the lower hole of terminal #12 to make it easier when connecting other components to this
same terminal later in the instructions.
Please refer to DRAWING 7.
Cut a 2 ½” length of wire and connect the adapter jack center-pin lug to terminal #1.
Terminals #1 & #9
2) Strip and tin a 3 ½" piece of wire and connect:
Suggestion:
Connect to the lower hole of terminal #9 and route the wire along a path so that its insulation also serves
as a spacer between the terminal strip and the 5K potentiometer body.
3) Fasten the two #4 nuts onto the two screws and tighten.
COM
1
2
3
4
5
COM
1
2
3
4
5
4) Mount the 5 lug terminal strip with the
grounded terminal #1 between the 5K pot and
the tube socket using #6 hardware.
5) Mount the 5 lug terminal strip with the
grounded terminal #5 between the 250K pot and
the tube socket using #6 hardware.
Be careful to mount these so that none of the terminals are
unintentionally shorted to ground from touching the
potentiometer bodies or the tube socket mounting ring.