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XP Xtrem Hunter manual & guide – settings, tips & setup

Ultimate guide

XP DEUS II XTREM HUNTER
Settings & practical guide

The complete setup manual for the world's first FMF® twin-box deep detection system – from first use to the optimal field settings for maximum depth performance.

5 m Max. detection depth

FMF® Multi-frequency

2.9 kg Total weight

>10 h Battery life

What is the XTREM HUNTER?

The XP XTREM HUNTER XTR-115 is a professional two-box deep detection system (twin-box locator) and the world's first of its kind to work with advanced Fast Multi Frequency technology (FMF®) . It is not a stand-alone probe, but an extension of the XP DEUS II – the XTREM HUNTER is simply paired as a new coil and uses the complete DEUS II electronics, remote control and headphones.

The device consists of two separately mounted coils – a transmitter (XTR115TX) and a receiver (XTR115RX) – which are mounted on a telescopic shaft. The electromagnetic field builds up only on the underside (ground side) , so small surface targets are automatically ignored. The XTREM HUNTER is a no-motion detector – it does not need to be swept, but gives an increasingly strong signal the closer you get to the target.

Typical areas of use:

XTREM HUNTER vs. conventional detectors

Conventional metal detectors respond to every metal object – even small nails or screws near the surface can mask the signal of a large find at depth. The XTREM HUNTER takes a different approach:

No response to small finds

Nails, bottle caps and other small parts are invisible to the XTREM HUNTER – it concentrates exclusively on objects from approx. 15 cm in diameter.

Minimal ground effects

Thanks to FMF®, false signals caused by movement, differences in ground height and mineralisation are considerably reduced – a clear advantage over previous generations.

Iron discrimination

As the only two-box system on the market, the XTREM HUNTER offers discrimination between ferrous and non-ferrous objects using the IAR function – revolutionary for this class of device.

Wireless & DEUS II compatible

Switch between the XTREM HUNTER and DEUS II standard coils in seconds. The complete wireless ecosystem is retained – remote control, headphones and app.

Assembly step by step

Before assembly: Note all screw sizes – 4 knurled screws Ø5mm/16mm, 2 knurled screws Ø5mm/30mm, 1 knurled screw Ø4mm/12mm. The wrong screw can damage the shaft or the electronics.

Mounting the rear coil (receiver)

Mount the rear receiver coil (XTR115RX with cable) on the front structure. Make sure it is aligned correctly – the cable connection must lead to the front coil.

Locking & unlocking the shaft

Bring the telescopic S shaft into the desired position and let the locking mechanism click into place. For transport: push the shaft together and stow it in the case (725 × 480 × 170 mm).

III

Screwing the shaft together

Tighten the knurled screws hand-tight – not too tight, otherwise the aluminium shaft will get pressure marks. The connection must sit without wobbling, as vibrations can produce false signals.

Connecting the coils

Connect the rear coil's connecting cable to the front coil. Make sure the plug is firmly seated – a loose connection leads to signal dropouts or constant noise.

Screwing on the front coil (transmitter)

Attach the front transmitter coil (XTR115TX with wireless TX and battery) to the shaft. It contains the electronics – screw it on particularly carefully.

Adjusting the telescopic shaft & handle

Adjust the handle to your height – high position or low position depending on the user's height. Important: the XTREM HUNTER should be kept a sufficient distance from the ground to avoid excessive sensitivity to surface targets.

VII

Attaching the carrying strap

Fit the supplied carrying strap. For long search sessions, the optional XP backpack 280 is recommended – it considerably relieves shoulders and arms with a total weight of 2.9 kg.

Pairing with the DEUS II remote control

Requirement: The DEUS II remote control must be updated to firmware version 2.0 or higher . The current version is shown on the display at start-up.

Have the serial number ready

The serial number of the XTREM HUNTER is on the device itself. It is needed for the pairing process.

Start pairing: OPTION → Pair → Coil

Navigate in the menu of the DEUS II remote control: OPTION → Pair → Coil → enter serial number. The XTREM HUNTER is integrated like a regular search coil.

Special XTREM HUNTER interface

After successful pairing, the remote control automatically switches to a special user interface – with unique menus and a real-time graphic display that shows the last 4 seconds of signal detection.

Coil change possible at any time

To switch to DEUS II standard coils: OPTION → Pair → Coil → select the desired coil from the coil list. The Relic program is well suited for confirming targets at medium distances.

All setting parameters in detail

The following table explains all the setting options of the XTREM HUNTER, their effects and recommended values for different search requirements:

Parameter	Value range	Standard	recommendation	Effect & notes
Sensitivity	0 – 99	85	70–90	Higher values = more depth range. On heavily mineralised ground or with EMI noise, reduce to 60–75. Never test indoors.
Disc IAR (iron discrimination)	OFF – 5	OFF	1–3	0 = no rejection \| 3 = iron near the surface \| 5 = iron at greater depth. Only effective in motion mode. Use with caution on trashy areas – deep targets could be masked.
Threshold (HUM)	0 – 20	0	0–5	Increasing it masks faint background noise. Caution: Also masks faint deep signals. Use sparingly – only increase with extreme background noise.
Reactivity	1 – 3	1	1 for max. depth	Low (1): Maximum depth performance, longer signals, slower walking pace needed, suppresses EMI. High (3): Faster target location, better discrimination on trashy fields. Do not change frequently when taking LCD readings.
Auto Tune	OFF – 3	OFF	OFF or 1	Automatic threshold tracking. At OFF: manual calibration by a short button press. At 1–3: automatic tracking, the device must keep moving. With very deep targets, fast auto-tune can weaken the signal – then switch to OFF.
Signal amplification	1 – 4	2	2–3	Amplifies the tone curve, highlights deep targets, but makes the device noisier. Value 1 = maximum stability, minimal ground noise. Reduce to 1 for difficult ground.
Freq. shift	14 channels manual/auto	Auto	Always SCAN first	Noise suppression. Before every session: long press on the top right button → automatic scan of all 14 channels. Selects the quietest frequency band. Test manually with strong EMI.
Ground (ground balance)	59 – 95 (Grab or manual)	87	87 (mostly)	FMF® greatly reduces ground effects – a value of 87 works in most cases. Adjust manually for special magnetic ground. GRAB mode: hold the button for 2 sec., tilt the coil towards the ground, read the value.

Optimal settings for every situation

The XTREM HUNTER comes with one factory program and has space for two of your own user programs. These three configurations cover the most common search scenarios optimally:

FACTORY PROGRAM (standard)

Sensitivity85

Disc IAROFF

Threshold0

Reactivity1

Auto TuneOFF

Signal amplification2

Ground87

MAXIMUM DEPTH (clean ground)

Sensitivity90–95

Disc IAROFF

Threshold0

Reactivity1

Auto TuneOFF

Signal amplification3–4 + headphones

Ground70 (non-ferrous)

TRASHY FIELDS & DIFFICULT GROUND

Sensitivity60–75

Disc IAR3–5

Threshold0–3

Reactivity3

Auto Tune1

Signal amplification1

Ground87

Tip for maximum depth on clean, non-mineralised ground: Carry out a frequency scan → reaction time to 1 → ground to 70 (for non-ferrous hunting) → maximise sensitivity → increase signal amplification → be sure to use headphones for the best signal perception.

Reading & interpreting signals

The 4-second graphic display on the DEUS II remote control shows the signal characteristics in real time. It recalibrates every second. With a little practice, you can estimate the depth and size of a target:

0 – 30 cm

Double-lobe signal with a negative dip in the middle. Strong, clear response. Surface targets are shown like this – often just ground effects or shallow objects.

30 – 80 cm

First lobe strong, second weaker. Clear single signal. A typical picture for medium-depth targets. Size can be estimated well from the signal duration.

80 – 150 cm

Single signal, clear but weaker deflection. Recognising deep targets: the weaker and more isolated the signal, the deeper the object lies.

> 150 cm

Very weak single signal. Headphones absolutely required. Slow walking pace and low reaction time (1) for the best possible detection.

Signal strength = depth indicator: The display also shows the signal strength numerically – low values indicate deeper targets. Signal duration = size indicator: The longer the signal lasts as you pass over it, the larger the suspected object.

Important when testing: Always place test objects on the ground and move the XTREM HUNTER over them from above – never move an object over the running detector. The XTREM HUNTER only detects objects on its underside (ground side). Never tilt the detector 90° onto its side during tests – it is then more susceptible to EMI interference.

Pinpointing & confirming a target

Switch Auto Tune to OFF

As soon as a target sounds: deactivate Auto Tune, then recalibrate. In manual mode, the signal is retained when you stand still over the target – in Auto Tune mode it would disappear after a few seconds.

Cross-bearing

Move the detector slowly over the target from different directions. The point where the strongest signals intersect shows the exact position. Increase the reaction time for this process (to 2–3) for more precise location.

Confirm with a DEUS II standard coil

After deep detection, switch to a DEUS II standard coil (OPTION → Pair → Coil). The Relic program is ideal for confirmation and more precise depth estimation at medium distances.

Using iron discrimination

When DISC IAR is active, a low tone indicates iron targets – the display shows them in shades of grey. Non-ferrous metals produce medium-high tones. Walk over the target in motion mode – IAR discrimination is not active when standing still.

Frequency scan & EMI noise suppression

Golden rule: Carry out an automatic frequency scan at the start of every search session ! The XTREM HUNTER is a highly sensitive device – the quietest channel is a basic requirement for good depth performance.

Frequency scan shortcut: On the main screen, long-press the top right button → automatic search through all 14 channels → the best frequency band is selected.

With excessive EMI noise (power lines, fences, radio masts):

Reduce sensitivity to 60–70
Set Audio Response (signal amplification) to 1
Reduce reaction time to 1
Set the handle higher or hold the aluminium frame directly – more ground clearance = less interference
Keep a minimum distance of 50 m from high-voltage lines and industrial plants

Ground balance – GRAB & manual

Thanks to FMF® technology, ground effects are greatly reduced. The standard value of 87 works perfectly on most ground. Manual adjustment only makes sense on specially mineralised or magnetic ground.

GRAB mode (automatic ground balance):

Hold the button for 2 seconds

Hold the corresponding button (ground balance button) for 2 seconds – do not let go.

Tilt the front coil towards the ground

While holding the button, tilt the front of the coil slightly towards the ground – listen for the ground hum in the tone.

Release the button & read the value

After releasing, the display shows the measured ground value. If no stable value is found after several attempts: reset manually to 87.

Pro tip for maximum depth on clean ground: Set the ground balance to 70 (instead of 87) and the reaction time to 1. This combination considerably maximises penetration depth on uncontaminated, non-mineralised ground.

Pro tips for maximum success in the field

Always use headphones

The XTREM HUNTER has a large dynamic range. Faint signals from deep targets are barely audible through the built-in speaker – WSA ST, WSA XL ST or WS6 ST headphones are a must.

Dress metal-free

No smartphones, belt buckles, keys, watches or shoes with metal inserts. Before use, check your shoes with the pinpointer – many hiking boots have reinforcing metal inserts in the sole.

Walk slowly at low reaction time

The lower the reaction time (especially at level 1), the slower your walking pace must be. Moving too fast skips over deep targets completely.

Keep it horizontal

Always hold the XTREM HUNTER horizontally – never tilt it onto its side. Tilted positions increase susceptibility to EMI interference and distort the detection results.

Adjust ground clearance

On difficult ground or with a lot of trash: set the handle higher or hold the aluminium frame directly. More distance from the ground = better stability and fewer false signals, while depth performance on large targets is maintained.

Recalibrate regularly

When ground conditions change, reset the audio threshold regularly with a short button press. This is particularly important when moving between dry and wet areas.

10-point checklist before starting

Must be done:

DEUS II firmware updated to version 2.0 or higher
XTREM HUNTER paired as a coil (serial number)
Automatic frequency scan carried out
Handle adjusted to body height
Sufficient ground clearance set
Headphones connected / battery charged
Ground balance (GRAB or manual 87)
Threshold set with a short button press

Be sure to avoid:

No metal on the body (phone, keys, belt, shoes with metal inserts)
Do not test indoors – strong EMI interference
Do not search in industrial areas or near power lines
Do not tilt the detector 90° onto its side
Do not move test objects over the running detector
Do not search for deep targets without headphones

Technical specifications

Technology

FMF® Simultaneous Multi Frequency

Detection type

No-motion (+ Auto Tune)

Max. detection depth

up to 5 metres

Minimum object size

approx. 15 cm Ø

Weight (with RC)

2.9 kg

Battery

Li-Ion 18650, 11 Wh, 45 g

Battery life

> 10 hours

Charging time

approx. 4 h (USB-C, min. 1 A)

Assembled length

1.20 m

Operating temperature

0 to +40 °C

Case (W×H×D)

725 × 480 × 170 mm

Frequency channels

14 bands manual / auto

Programs

1 factory program + 2 user

Compatible headphones

WSA ST · WSA XL ST · WS6 ST · WS6 · WSA II · WSA II XL

Warranty

5 years (parts & labour)

Weight in case

5.8 kg

Compatible headphones – the new ST generation

With the ST series (stereo) , XP has developed a new generation of headphones specifically for the DEUS II. Equipped with new electronics, their own processor and a USB-C port, these models are designed for true stereo audio and multiprocessing with the DEUS II V4 update . All ST models use XP's patented radio protocol – 10× faster than Bluetooth with minimal latency.

Important for XTREM HUNTER users: The stereo function (V4 update) is not available for the XTREM HUNTER – only for conventional DEUS II coils. The XTREM HUNTER still benefits from the faster signal processing and better audio quality of the ST headphones in mono operation.

Model	Type	Special feature	Protection class	Stereo (V4)	recommendation
WSA ST	On-ear, light & foldable	Successor to the WSA II – best-selling model. Ambient sounds clearly audible, ideal for conversations. USB-C charging.	Weatherproof	Yes (V4)	All-round
WSA XL ST	Over-ear, enclosing the ears	The most comfortable XP headphones. Shields against wind, cold and ambient noise – ideal for noisy environments (beach, storm). Compact folding design.	Weather-resistant (not waterproof)	Yes (V4)	Outdoor & XTREM
WS6 ST	On-ear + integrated control unit	Headphones and DEUS II control in one. Own screen, settings directly on the headphones. Can be operated as a WS6 Master (without RC) – the lightest DEUS II configuration.	Weatherproof	Yes (V4)	Pro / light
WS6 (classic)	On-ear + control unit	Proven predecessor of the WS6 ST. Still fully compatible with the XTREM HUNTER and DEUS II.	Rainproof	No	Proven
WSA II XL (classic)	Over-ear	Predecessor of the WSA XL ST. Still compatible. Recommended in the original XTREM HUNTER manual.	Weather-resistant (not waterproof)	No	Compatible

What does V4 / stereo audio actually bring when detecting?

Two independent audio channels

With V4, two parallel signal processing chains run at the same time. Each ear receives independent information – e.g. different reaction time, volume or tone frequency left/right.

More precise target location

Stereo spatial sound allows a more accurate assessment of object size, depth and position – more information goes straight to your ears instead of only to the screen.

Multi-Reactivity

V4 allows two different reactivity levels at the same time – ideal for detecting both deep large targets and small finds near the surface in one pass.

Recommended for the XTREM HUNTER: WSA XL ST (best noise isolation for field work) or WS6 ST (if you also want control without the RC). In mono operation, both benefit from the faster processing of the ST generation. A new jack adapter for your own in-ear headphones on the ST models is in preparation.