Start with your soil, target, interference and water exposure. A technology label does not guarantee recovery depth, discrimination or the right coil.
Compare the exact detector, mode, firmware and coil. Read water ratings for the control box, coil and headphones separately, and treat any depth or target result as specific to its recorded conditions.
EQUINOX 700/900 manual: Frequency, printed p. 17 · Nokta The Legend product and software reference
Sources rechecked October 10, 2026. Manufacturer descriptions establish model-specific controls, not an SSL ranking or physical test.
Very low frequency designs use a transmitted field and a received target response. A selectable-frequency setting uses the frequency you choose; it does not by itself mean several frequencies operate together. Check the exact model’s available modes and controls.
Minelab: frequency and coil FAQsA simultaneous mode combines more than one operating frequency. EQUINOX 700/900 also offers single-frequency choices; available choices depend on model and mode. Compare real mode behavior using the original Minelab frequency section, not a claim that every setting works equally everywhere.
Nokta The Legend is another manufacturer-labeled simultaneous multi-frequency example. Match the original Legend to its own manual, not Legend2.
Pulse systems excite the coil in pulses and assess the changing response. Do not assume every PI provides the same target identification or rejection controls. Compare the exact manufacturer specifications and manual for the conditions you intend to search.
Minelab GPX 6000 product guidanceGPX 6000 specifications distinguish a coil waterproof to 1 m from a detector rated for splash and rain. It is not a whole-detector diving example. Read coil, control-box, connector and headphone limits separately before exposing any equipment to water. Manufacturer water-exposure limits.
Confirm an exact detector/coil pairing in SSL’s equipment references or original documentation. XP’s Reactivity control and another model’s recovery speed are not interchangeable numeric recipes. Use the XP original manual hub for the named detector and firmware.
Read your mode’s discrimination tradeoffs and test changes one at a time. The settings guide and signal-reading guide explain how to keep results useful without inventing certainty.
Primary links checked October 6, 2026. The linked manual hubs do not imply every listed PDF was inspected. No SSL comparative depth or detector ranking is claimed.
Metal detector frequency guide: compare your model and modes