Instructions: Classic II, III, ID, & IDX, & Pro series, Modified.
Adjust Threshold first.
Threshold Setting:
Pull trigger, and adjust the Threshold control to hear the Threshold audio comfortably. One needs to set the Threshold audio loud enough to hear strongly, so that you can set the Ground Balance. Reset it to softer levels for deep hunting in the All Metal mode.
Ground Balance: *
Pull trigger, and hold on or set trigger forward, locked on. Adjust Threshold audio to your hearing. Holding coil a couple of feet above ground parallel, lower coil to ground. The Threshold audio should remain at the same level. If the Threshold audio rises or drops, the Ground Balance control can be adjusted one way or another, so that lowering the coil to the ground the Threshold audio stays the same. Setting it this way would give you a neutral Ground Balance point. Having a slight increase when lowering coil to ground would give you a positive Ground Balance offset. The same in reverse, if the audio went slightly silent, giving you a negative Ground Balance offset. They could be times being a little (+) positive, or (-) negative ground balanced, may enhance target response.
* Ground balance adjustment has a direct affect on the display reading, (ID, IDX). The display has been factory pre-set at a slightly positive (+) ground balance setting. Adjusting ground balance up or down a little from this point, should have negligible affect on the display accurateness.
Power Boost Discriminate:Boost circuitry comes into affect at about the 4 o