Center the tape measure vertically, located equally between the left and right sides of the left face of the amplifier, measuring 1 1/2 inches down from the top edge of the left face of the amplifier. Firmly grip the tape measure, and draw a 3/16-inch circle to mark this measurement, using the pencil.
Center the tape measure vertically equally between the left and right sides of the right face of the amplifier, measuring 1 1/2 inches down from the top edge of the right face of the amplifier. Firmly grip the tape measure, and draw a 3/16-inch circle to mark this measurement, using the pencil.
Attach the 3/16-inch drill bit. Drill one hole each, on both the left and right sides of the amplifier, where you previously marked the measurements.
Thread one 3/16-inch bolt through the hole located on the left tilt back leg. Place two flat washers (serving as spacers) onto the 3/16-inch bolt, keeping the flat washers flush with the tilt-back leg. Position the washers between the tilt back leg and the face of the amplifier. Thread the bolt into the hole previously drilled on the left face of the amplifier, moving from the outside in.
Thread one flat washer onto the installed 3/16-inch bolt from inside the amplifier, followed by one split washer, followed by one locking nut. Firmly attach the locking nut onto the 3/16-inch bolt, so that the left leg is tight against the left face of the amplifier.
Thread one 3/16-inch bolt through the hole located on the right tilt back leg. Place two flat washers (serving as spacers) onto the 3/16-inch bolt, keeping the flat washers flush with the tilt back leg. Position the washers between the tilt back leg and the face of the amplifier. Thread the bolt into the hole previously drilled on the right face of the amplifier, moving from the outside in.
Thread one flat washer onto the installed 3/16-inch bolt from inside the amplifier, followed by one split washer, followed by one locking nut. Firmly attach the locking nut so that the right leg is tight against the right face of the amplifier.
Lean the amplifier back carefully, resting the amplifier upon the tilt back legs at the desired angle. Position the rubber floor stops on both the right and left tilt back legs, with the drill holes on each floor stop facing away from the amplifier on the left and right sides.
Mark a drill hole with the pencil, inside the hole located near the top of the floor stop, on both the left and right tilt back legs. Remove the floor stops on both the right and left legs. Attach the 1/8-inch drill bit, and drill a hole into both the left and right tilt back legs, where you made the guide marks.
Reattach the rubber floor stops to both the left and right tilt back legs. Firmly attach one wood screw to the rubber floor stop on the left tilt back leg. Firmly attach one wood screw to the rubber floor stop on the right tilt back leg. Tilt back the amplifier.