Align the OUTPUT jack with the hole in the
case that has bare metal showing. This is to
ensure the box is properly connected to
the signal ground otherwise the unit will
hum!
Insert the board and secure with the plain
washers and nuts. Only do the nuts up to
finger-tightness for now..
Close the two halves of the box making
sure the power cable does not get
sandwiched between the sides and base
plate.