Tone; Headphones - Minelab Eureka Gold Instruction Manual

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5.7.1 Discriminate Control
The Discriminate control sets the sensitivity to ferrous objects. At the
minimum setting small ferrous objects at shallow depths are less likely to
be discriminated, while at the maximum setting these objects are more
likely to be discriminated. Large ferrous objects should always be
discriminated unless they are too deep.
5.8

Tone

P0581-A
We would recommend that you experiment by testing on various targets
buried at different depths to find the tone that best suits your hearing.
5.9

Headphones

When the headphone plug is inserted, the loudspeaker is automatically
disconnected so that sound only comes through the headphones.
When using headphones, you can adjust the Threshold control to a lower
threshold level, and outside noises, such as wind, will be less distracting.
Using headphones also conserves battery life. If the headphones have a
"Stereo/Mono" switch, set it to "Stereo".
Headphones can significantly increase your chances of hearing a small
signal, therefore we recommend their use.
The Eureka Gold has a tone control which allows the
operator to adjust the "tone" or "pitch" of the audio threshold
signal to suit the individual. Generally, this should be set to
the pitch that you find the easiest to listen to.
The headphone socket is located at the bottom right
corner of the front panel. Headphones used should be
of low impedance, but no less than 8 ohms. The socket
will accept most mono and stereo headphones with a
¼" jack.
The Minelab Eureka Gold