Hello detectorist!

Today we're talking about one of the most important components of your XP DEUS II: the search coils, or simply "coils" as we commonly call them. They are the beating heart of your metal detector, the part responsible for detecting signals from the ground. Choosing the right coil can make a tremendous difference during a detecting session, affecting depth, target separation, and, not least, your overall comfort and fatigue level.

The DEUS II is a cutting-edge detecting platform, and its FMF (Fast Multi Frequency) coils are packed with advanced technology. Forget cumbersome cables. Every FMF coil is completely wireless, equipped with an integrated battery, and built to withstand underwater use down to 20 meters. This means complete freedom of movement and the ability to explore aquatic environments with total confidence.

But which coils are available for the DEUS II, and how do you choose the one that's right for you?

Let's take a closer look.

FMF Coils for the XP DEUS II: A Technical Overview

For the XP DEUS II, XP has developed a dedicated range of FMF coils that utilize Simultaneous Multi-Frequency technology (from 4 to 45 kHz) to deliver exceptional performance across a wide variety of targets and ground conditions.

Here are the main options available:

1. FMF 22 cm (9-inch Round Coil)

This is the smallest coil in the FMF lineup.

Dimensions: 9 inches (22 cm), round
Approximate Weight: Around 750 grams (complete system)

Ideal Environments: This is your perfect ally in heavily contaminated sites filled with iron debris and modern trash. It excels in dense forests, urban parks with significant amounts of junk, and locations where target separation is critical.

Strengths: Outstanding target separation, excellent sensitivity to small objects, and exceptional maneuverability. It allows you to carefully "comb through" confined areas with remarkable precision.

2. FMF 28 cm (11-inch Round Coil)

Widely regarded as the standard all-purpose coil.

Dimensions: 11 inches (28 cm), round
Approximate Weight: Around 800 grams (complete system)

Ideal Environments: A true all-rounder. It performs exceptionally well in most detecting situations, including open fields, beaches, parks, and agricultural land.

Strengths: Offers the best balance between versatility, depth, and target separation. If you can own only one coil, this is often the most balanced choice.

3. FMF 34 x 28 cm (13 x 11-inch Elliptical Coil)

The largest and most powerful coil available for the DEUS II.

Dimensions: 13 x 11 inches (34 x 28 cm), elliptical
Approximate Weight: Around 900 grams (complete system)

Ideal Environments: Perfect for open fields, large beaches, and extensive areas where you want to cover more ground quickly while searching for deeper targets.

Strengths: Maximum detection depth and significantly greater ground coverage. Excellent for locating larger objects or targets buried deeper beneath the surface.

It's important to note that all FMF coils feature an integrated rechargeable battery that provides approximately 8 to 10 hours of operation and can be charged via USB-C.

Depth, Separation, and Maneuverability: Understanding the Trade-Offs

Choosing a coil is always a balance between three primary factors:

Depth: Larger coils generally achieve greater detection depth, but they are less sensitive to very small targets and may struggle more when separating closely spaced objects.

Target Separation: Smaller coils excel at target separation. This means they can distinguish a desirable target from a nearby piece of iron, reducing false signals and helping you recover valuable finds hidden among trash.

Maneuverability: Smaller coils are lighter and easier to handle, particularly in dense vegetation, confined spaces, or during long detecting sessions. Larger coils provide more coverage but can become tiring after extended use.

When Should You Choose a Large Coil and When a Small One?

The answer depends largely on your hunting style and the conditions of the site.

Small Coil (FMF 22 cm)

Small Targets: Ideal if you're searching for small jewelry, thin coins, or other tiny objects.

Contaminated Sites: In parks, picnic areas, or trash-filled beaches, its separation capabilities are second to none.

Precision Searching: Perfect for carefully scanning small sections of ground.

Confined Spaces: Excellent in forests, narrow trails, and obstacle-filled environments.

Medium Coil (FMF 28 cm)

General Use: If you're unsure about the terrain or target type, this is the most versatile choice.

Balanced Performance: Delivers an excellent compromise between depth and separation and is suitable for almost every situation.

Large Coil (FMF 34 x 28 cm)

Fast Coverage: Ideal for quickly covering large areas such as agricultural fields and expansive beaches.

Maximum Depth: Best when searching for larger targets or objects buried deeper underground.

Clean Sites: Performs exceptionally well in areas with minimal trash, allowing you to take full advantage of its coverage and depth capabilities.

The Magic of Wireless Technology: Freedom and Simplicity

One of the defining characteristics of the DEUS II, inherited from its predecessor, is its completely wireless architecture.

FMF coils pair instantly with the remote control or directly with WS6 headphones and operate without a single cable.

This not only eliminates the frustration of tangled or damaged cables but also contributes significantly to the remarkably low weight of the entire system.

Each coil is a self-contained unit with its own battery and processor, communicating wirelessly with the other components of the detector.

This seamless integration makes the DEUS II exceptionally agile, responsive, and enjoyable to use in the field.

Always remember to comply with local regulations and obtain any required permissions before conducting metal detecting activities.

Looking for a Custom Setup for Your XP DEUS II?

Optimal settings vary depending on the terrain, target type, and, as we've seen, even the coil you choose.

With Drusilla.ai's Program Intelligence, you can generate customized search programs by specifying your search environment, target objectives, and local interference conditions. You'll receive optimized settings tailored specifically to your situation.

Registration is completely free and requires no credit card.

The Pro plan also unlocks Field Companion, a real-time AI assistant designed for use in the field, as well as Restricted Areas, our informational tool for checking potential restrictions within search areas.

Restricted Areas is provided for informational purposes only and does not replace consultation with archaeological authorities, heritage agencies, or local government institutions. Compliance with all applicable laws and regulations remains solely the responsibility of the user.