You don't have to run with a high sensitivity. As I found out, routinely backed it off to about 25.
This was how I had my Vista set up:
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Pictured above is my unit and is how I have my controls set up using the Super 6 coil.
Coin and jewelry hunting.
Ground balancing
Set on All metal mode
Sens to 45
S slow mode on toggle
Boost off
Mine ground balances about 1 o'clock. Depending upon your ground, make tiny GB
adjustments until there is no change when bobbing the coil.
If your hunting in disc mode and need a quick ground balance, make the GB adjustment in
disc.
The disc control is the tone break in two tone mode.
The first red line is where a thin gold chain will be disc'd out or in two-tone will give a high
tone. The broad green zone is the tiny gold, foil zone. Where the green zone breaks off, is
the last area that thin gold rings will not be rejected. Its the setting I hunt. Eliminates most tiny
foil. It is also a good setting when hunting coins in 2 tone mode. Dig all highs and decide on
the low tone targets. If you run this setting, when pinpointing a high tone and pull back on the
coil, the tone will go from high to a low grunt. It's an item just below your disc setting, could be
canslaw. If you run this setting in disc mode, get a high tone, pinpoint and pull back on the
coil, just before audio goes silent, if you get a slight mixed rough sound, its trash and canslaw
most of the time. If the target sound breaks off with no after glow sound, its a good target.
Just some things for you to try. I normally hunt using the Super 6 coil 6x8 coins and jewelry
S slow mode, boost off, sens 25-45, disc mode, sweep coil slower
and run the same settings in two tone mode.
Deep F mode is good for trashy areas, faster response recovery, separation, loose some depth,
switch on boost mode to regain the depth.
I like two tone mode as much as disc mode, you hear both iron and good target signals.
I run iron volume (low tone) where its set as pictured, its loud enough to alert you there's iron
without driving you batty if in a dense iron zone. Set where you like. High tone targets will
have normal volume. It also lets good targets be heard better amongst iron when the iron
volume is lower.
Have fun
Sven