Finally got hold  of this coil for the Minelab Manticore and had it out for a few spins .  You  could say that my experiences with the 15″ NOX coil gave me the knowledge base  to begin  my comparisons with.  The NOX 15–was a good good, deep coil but chattered  in salt and needed  to be slowed  down (4) to get good depth.  I ran the Manti  15″ in Neil Jone’s “Freesestyle” settings, transposed on Beach Deep, Beach General, and the All Terrain General modes.  In that it uses  3 levels of filtering (Ferrous  Limits, segmented  audio and all  tones) Freestyle is a great system  for stabilizing the Manticore at higher senitivity settings,  and bringing up  good, clean  responses.  This system was pretty  good for the big coil–it ran very smoothly even  up at 26 / 28 on fresh water sand.  This coil really showed  how well  it interracts with the Manti’s great processing–giving clean, sharp  tones  on several  deep  coin sized targets–15 inches and deeper.

I also  tried this coil on some of the stock modes.  It sounded really good in Beach General in that you  could  hear the interraction with the ground–evidence  of  signal  penetration owing to the lower frequency  weighting.  One high tone proved  to be a toy car down 18″ -plus.

All Terrain General seemed to  have a lighter touch owing to its higher  weighting responding to the heavily mineralized fresh water sand–probably not the best big coil tough sand mode.

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“…in the house…!”

I also  tried the coil with another great system–Tom Dankowski’s Beach Low Conductor settings.  This is also a very deep way to  run the Manticore although it’s a bit more noisy.  In that  this system uses Prospecting audio, it was a good test for how the coil filtered down signals  to a clean, single  tone.  The 15″ coil was pretty good at this–although there was more  flutter  due to  to the “open screen” nature of Tom’s settings.

It’s obvious that the Manticore has stronger  processing than the Equinox and how the machine operates with a larger coil  is a good test of this.  This coil was, smooth, hit several deep targets, and sounded off well on some very small, deep signals too.

The overall depth was still short of a pulse machine such as the Whites  Dual  Field, but was certainly approaching it.  At the same time, The Manticore gives you  great  audio, and on-screen accuracy.

A Couple  of Minelab Manticore 15″ coil ponters:

1/ to really get a feel for the kinds  of tuning changes that are needed to get  the depth from a  big  coil–try testing it indoors.  Before  getting  these coils to  go  deep–a way  has to be found to make your signals stand  out from the larger detection fieild.

2/ To get the hang of hearing when  you are  tuning too  high  or too  fast–test  the extremes–the  maximum settings over  targets to  hear how  these affect  detection.


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n My best Manticore find so far, it’s .75 ct.

3/ If there’s any detector that can process well  enough to support a big coil–it’s theManticore, but at the same time your setting and sweep speed need to be  balanced.  Lower Sensitivity and a slower Recovery Speed give  the detector time to  process what’s under the coil effectively.

4/ Where you  are hearing  short clipped shallow signals, this mean  that deeper oneswill be harder to hear and acquire.  Lower sensitivity makes your signals sound fuller and gives you  more target information in the signal tone.

5/ When you want to use the red “iron indicator” remember that you  are dealing with a more skewed detection field ratio.  This means that more exact, narrow coil passes will be needed to get an accurate response on non-ferrous signals.

When I got my first 15″ “WOT” coil for the Soverign years  ago–it took for a couple of years and some instruction from an “old-timer” before I was able to really get the performance from it.  This involved learning to run a balanced signal and hear exactly how the machine was performing.  I get the sense that this is a coil  that will perform best  turned down, not up.  Be  sure  to base your settings upon testing, not guesswork.

This coil has a ton of potential and is a must for the kit of  any serious  Minelab Manticore hunter.

For more information on getting results with this great detector, check out my new book:

The Minelab Manticore: Tips, Tricks and Settings (V.620.0+73)