Nexus Pathfinder V3 Two Box Metal Detector Set Up Pathfinder V3 Two Box Metal Detector Set Up Turn the metal detector on from the Volume control and set the audio volume to a comfortable level. Lower both coils of the detector as close as possible to the ground. While the detector is close to the ground, set the Threshold to a low audible level. Set the Meter balance so that the first led is on. You are ready to go. . Nexus Metal Detectors