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May 21, 2026 - 04:23 PM
The INV40 coil uses a Double-D (DD) configuration, which is specifically designed to handle mineralized soil better than concentric coils. The DD configuration handles mineralized soil well, providing superior ground balancing in iron-rich or saltwater-mineralized environments and maintaining stable operation while reducing false signals that can occur with other coil types. The DD design excels in areas with high mineral content, red clay, or black sand, making the INV40 a strong choice for challenging hunting conditions. Whether you're detecting on mineralized farm fields or saltwater beaches, the INV40's DD configuration delivers reliable performance. Learn more about how coil design affects performance in challenging ground at metal detector technologies.
