I pasted a response from one of Monte's posts below on the SL Pro.
Do you set the signal balance in the GEB Norm mode or the GEB Disc mode while the coil is on the ground?
Before I establish a Ground Balance I will set the Signal Balance control as high as possible while remaining stable. Do not do this with the coil in the air, but near the ground over a spot w/o metal nearby. I increase the Signal Balance to maximum, or close to, and take a look at the analog display. If the audio is noisy and/or the display needle is jumpy,or twitchy, then I SLOWLY reduce the Signal Balance just to the point where I gain stability. If I can pull and release the trigger toggle and the needle rests on the '0' without moving, then I am good to go, but I like it just barely at that point from being unstable and not set too low.
Dan
Do you set the signal balance in the GEB Norm mode or the GEB Disc mode while the coil is on the ground?
Before I establish a Ground Balance I will set the Signal Balance control as high as possible while remaining stable. Do not do this with the coil in the air, but near the ground over a spot w/o metal nearby. I increase the Signal Balance to maximum, or close to, and take a look at the analog display. If the audio is noisy and/or the display needle is jumpy,or twitchy, then I SLOWLY reduce the Signal Balance just to the point where I gain stability. If I can pull and release the trigger toggle and the needle rests on the '0' without moving, then I am good to go, but I like it just barely at that point from being unstable and not set too low.
Dan