2) Mount two of the .1
µ
F capacitors.
8
Terminals #2 & 5:
Mount one .1
µ
F cap to terminals #2 and #5 with the cap upside down and its leads facing up. This
will allow room for the next component to be mounted in the same area.
(Make sure the leads of the cap do not come into contact with any terminals besides terminals #2 and #5).
Terminal #4:
Turn another .1
µ
F cap upside down with the leads facing up and mount one lead to terminal #4.
(The other lead will be connected to the footswitch later in these instructions).
3) Mount the MPSA13 transistor.
Be careful not to overheat the MPSA13 transistor when soldering.
MPS
A13
E B C
Terminals #3, 4 & 5:
“Emitter” to terminal #3
“Base” to terminal #4
“Collector” to terminal #5
Mount footswitch in the ½” hole. The large nylon
washer goes under the mounting nut on the outside
of the box. The Lock washer mounts on the inside
of the box between the box surface and the other
nut. Make sure that the footswitch solder lugs are
oriented left to right, not up and down as illustrated
here.
SECTION 2 – Mount the Potentiometers, Footswitch, LED and DC Power Jack
Please refer to DRAWING 3.
Mount the 1K potentiometer in the upper left hole using hardware provided. Mount the 250K
potentiometer in the upper right hole using the hardware provided. Solder lugs for both pots should
be pointed toward the bottom side of the enclosure. (
Remove the small mounting tab on each pot
by bending it back with pliers).
Incorrect Orientation
Correct Orientation
Mount the power adapter jack in the 15/32” hole on the bottom left side of box. Orient the solder
lugs on the power adapter jack so the larger center-pin lug is facing the bottom side of the box.
Tighten the adapter jack.
CENTER-PIN LUG
POSITIVE-SWITCH LUG
POSITIVE LUG
Power
Adapter Jack
Mount the LED in the ¼” hole next to the footswitch. Align the LED
leads so that the anode (long lead) is closer to the footswitch.
The Anode (+) side of the LED is
indicated by a slightly longer lead
and/or a positive sign.
LED Physical
Representation
+
-
+
-
LED Schematic
Symbol
anode
cathode