Volume/Threshold - White's GOLDMASTER Series Owner's Manual

GMX Controls
Volume/Threshold Adjustment
Volume,
Threshold
Level
Volume Adjust
(tap)
Threshold
Adjust (hold)
External Speaker or Headphones?
There are advantages to running your GMX with headphones. Battery life will be increased
and it will be much easier to hear the faintest signals. Wind especially can cause issues with
using the external speaker on a gold detector, as the buffeting in your ears can mask small
target sounds.
However, in snake country or in hot and humid conditions headphones may not be an op-
tion. The GMX has independent volume settings, meaning that you can adjust the volume
for the external speaker as well as the headphones, and these settings are saved when you
power the machine down. The GMX automatically senses when headphones are plugged
in, and the machine will switch to the saved headphone volume level. It then returns to the
saved speaker volume level when the headphones are removed.
10
The VOLUME control on your GMX only
adjusts the sound level of target sounds and
confirmation beeps. It is used in conjunc-
tion with the THRESHOLD to give you
the most control over the dynamic range
of you detector. This control is adjusted
by tapping the SPEAKER icon and then
using the UP and DOWN buttons to adjust
it louder or quieter. Note that holding the
SPEAKER button adjusts the threshold,
which will display the letters "th" on
screen. Adjust the THRESHOLD so you
can hear a faint hum - this will allow for
best performance on small targets.
For example, with a low THRESHOLD
and a high VOLUME, there is a large
range of signals you might hear. Some will
be just above the threshold, others will
bang out loud and clear. You can adjust
the VOLUME and THRESHOLD to your
own preference, but in general the best
range of target sounds will be available
with a high volume and low threshold. At
volume levels 9 and 10, you will see b1
and b2 on the display as these two levels
enable consecutive audio boosts for low
signals.