Minelab EQX 15 Coil Review: More Ground Per Sweep, Less Separation in Trash

Coverage and depth on larger, deeper targets, at the direct cost of separation between two close targets. A coil generates a detection field roughly proportional to its own size, so a 15 inch coil covers noticeably more ground per sweep than the stock Minelab EQX 11 Coil (11 inch) and reaches slightly deeper on larger objects such as a big silver coin or a bigger relic. Minelab states this plainly: made for specialized treasure hunting and great for covering a lot of ground, it provides maximum depth so you can find treasures buried deep underground.

The tradeoff is physics, not a design flaw: a larger field blends two nearby targets into a single, harder-to-read signal more readily than a smaller field does. On open ground with low trash density, that tradeoff barely matters, because there are fewer nearby targets to blend in the first place. The coil coverage and sweep time calculator is the tool for estimating how much time this coil actually saves on a given site size.

Published figures only, all from Minelab or Coiltek own listings.

Fitment is the column to read most carefully. None of these coils cross brands.

This is the specific tradeoff to weigh before buying the largest coil Minelab sells for this platform. In a public park, an old schoolyard, or any site with decades of bottle caps, pull tabs and foil, a 15 inch field blends a coin and a piece of trash lying a few inches apart into one signal far more often than the smaller Minelab EQX 11 Coil (11 inch) or Minelab EQX 06 Coil (6 inch) does. Buyers who assume bigger always means better, and fit this coil to a machine they mostly swing in urban parks, regularly report regretting the purchase once they meet real trash density, because they now dig more blended, ambiguous signals rather than fewer clean ones.

Second, weight and control. Minelab publishes 1.46 lb for this coil with its skidplate, against a lighter figure for the stock Minelab EQX 11 Coil (11 inch). On a long session that extra weight at the end of the shaft is noticeable, and it shifts the balance point of the whole machine.

Third, and this applies to every coil on this platform, not just the EQX 15: it fits the Equinox series and the X-Terra PRO and nothing else. If you own a Nokta Legend, a Garrett Vortex, or any non-Minelab machine, this coil is not compatible at any price, and buying it by mistake is an expensive error with no fix beyond reselling it.

Published owner discussion of the EQX 15 is consistently positive for the specific use case Minelab markets it for: open fields, beaches and any large, low-trash site where covering ground quickly matters more than fine separation. Owners hunting large farm fields and beaches report meaningfully faster coverage per outing and credit the coil with finds at the edge of a previously swept area.

The consistent complaint, almost universal in published reviews from people who tried it in a trashy park first, is exactly the tradeoff above: separation suffers, more time gets spent on ambiguous or blended signals, and several owners explicitly recommend keeping the stock Minelab EQX 11 Coil (11 inch) on for any site with real trash density and reserving the EQX 15 specifically for open ground. Owners also consistently note that target ID numbers shift slightly between coil sizes on the same machine, which is why the Equinox 900 target ID chart recommends rechecking known targets after any coil swap.

Buy it if:

• You own an Equinox or X-Terra Pro specifically. It fits no other brand.
• You hunt open fields, farmland or beaches with low trash density.
• Ground coverage per hour matters more to you than fine separation.
• You want maximum depth on larger targets such as bigger relics or big silver.

Skip it if:

• You mainly hunt trashy parks or old house sites, where the smaller elliptical separates better.
• You own a machine from any other brand. This coil is not compatible with it.
• You want the lightest possible swing for a long session.
• You have not yet met your local trash density and are buying a second coil speculatively.