Minelab GPX-4500, Instruction Manual

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Connecting the Battery Pack:
1 Place the battery into the battery harness pouch.
2 Connect the headphones and the power cable to
the appropriate sockets in the battery.
Assembly
Note: The illustration shows
the battery orientated for
a user holding the detector
with their left hand. Making use of the GPX-4500 Amplifier:
In previous Minelab detectors if a speaker was used,
instead of headphones, the audio level would be
significantly reduced. Now, the new Minelab Lithium
Ion battery contains an additional amplifier which
automatically increases the audio level when a
correctly wired speaker is used.
The new Minelab Lithium Ion battery will
automatically detect if headphones or a speaker is in
use and adjust the audio level accordingly.
See wiring diagram below for correct speaker to
audio jack wiring.
Note: After market
accessory boosters may
not operate in conjunction
with this built in amplifier.
However, the detectors
'Target Volume' adjustment
allows you to adjust the
target signal volume and
threshold, so accessory
boosters are unlikely to
be needed.
Caution: Never re-wire your headphones so that
they are similar to the external speaker as the
audio level may damage your hearing.
External Speaker
Tip Ring
Caution: The battery should initially be charged
for 8 hours before use.
Not connected