Deus 2 Vs Manticore. Relic Hunting In Hot Dirt.

[BigSkyGuy]

11 hours ago, Daniel Tn said:

Yeah, but I was confused about you saying a Sens of 29.  I never had it that high.  I started out with it at 25.  This place is similar to how it is in Culpeper, VA in that the fields are extremely mineralized but the woods are not as bad.  In the woods I could run 22-25 sensitivity. In the field, I was getting too much mineral blow back so I dropped it into the teens to get rid of that.  

25 it is. You might want to try teens sensitivity in the woods even though you can go up to 25. phrunt had an excellent post regarding lowering sensitivity to improve target IDs, which is worth a look if you have not seen it. Thanks for sharing your results. Excellent post!

[Chase Goldman]

37 minutes ago, Daniel Tn said:

The shallow ones were on the center line and painted an egg shaped dot.  The deeper ones were NOT on the center line.  Here's a couple screen grabs of some videos I did while going over a deeper one and a shallow one. You can see the blob up there in the upper ferrous zone on the deep one. The shallow ones that read good will be directly below that, on the center line.  

Thanks.  Interesting.  Shows that soil mineralization can potentially push pure non-ferrous at depth into the ferrous limit regions (depending on the profile) such that ferrous limits will potentially mask keepers.  This can also potentially happen with the Nox and too much iron bias.   So with the M-core it is probably best to go with minimal ferrous limits in hot ground.

Perhaps ML can further tweak their Multi-IQ+ signal processing algorithms further to keep pure non-ferrous at depth as close to the centerline as possible in hot dirt.  Kind of an anti-mineralization-bias applied to the target signal to remove/reduce the ferrous component of targets so they fall as close to the centerline as possible.  This might result in more falsing ferrous but at least you won’t be filtering out keepers.

[GB_Amateur]

1 minute ago, Chase Goldman said:

So with the M-core it is probably best to go with minimal ferrous limits in hot ground.

Unlike the Equinox's Iron Bias, with the Manticore the user can select regions of the Conductive scale to increase, decrease, or eliminate ferrous response.  This is the case for both the above central axis region ('nail region' -- not official ML terminology) and independently below the central axis ('sheet metal region' -- again not official language).

So if the intended target (lead bullet of certain size and shape in this case) falls above the central axis due to mineralization, the customization allows for opening up that region to high tones but still keeping other regions grayed out.

Most of the videos seem to show the upper grayed out region simply uniformly grayed (i.e. rectangle with base all across the screen from left to right) while showing the lower part with varied graying , with varying heights -- kind of like teeth on a not so perfect mouth.  ?  But the upper region can be configured similarly to the lower region.

[Chase Goldman]

1 hour ago, GB_Amateur said:

Unlike the Equinox's Iron Bias, with the Manticore the user can select regions of the Conductive scale to increase, decrease, or eliminate ferrous response.  This is the case for both the above central axis region ('nail region' -- not official ML terminology) and independently below the central axis ('sheet metal region' -- again not official language).

So if the intended target (lead bullet of certain size and shape in this case) falls above the central axis due to mineralization, the customization allows for opening up that region to high tones but still keeping other regions grayed out.

Most of the videos seem to show the upper grayed out region simply uniformly grayed (i.e. rectangle with base all across the screen from left to right) while showing the lower part with varied graying , with varying heights -- kind of like teeth on a not so perfect mouth.  ?  But the upper region can be configured similarly to the lower region.

You’re right, Chuck.  You just have to “lower” the upper ferrous limits around the TIDs of interest (i.e., where the bullets show up and/or buttons, and/or nickels etc.).  That is the bandaid or permanent fix if ML can’t figure out how to make deeper pure non-ferrous targets show up on the centerline in hot dirt.

[GB_Amateur]

3 hours ago, Chase Goldman said:

You just have to “lower” the upper ferrous limits around the TIDs of interest (i.e., where the bullets show up and/or buttons, and/or nickels etc.).

Each zone (upper and lower) has five regions whose locations and widths can be set.  For example, you could have three upper zones 'out' (grayed) to a high degree and two 'in' (completely white), one for bullets and one for buttons, assuming those targets have fairly narrow conductive VDI's.

[Daniel Tn]

Yep, that's what I meant by you'd have to run an open screen to hear them.  There's a lot to unbox with the Manticore settings for customization.  They made most everything simple and straightforward for people that like turn on and hunt but with enough room for tweakers too.  So yes it is possible to open that area up...but at the same time you're gonna let in iron too that falls in that block.  

[Rick N. MI]

Do you have any reason to keep the Manticore when you have the Deus 2? It just seems Minelab didn't get the Manticore quite right. I doubt they will change things on the Manticore.

[Daniel Tn]

33 minutes ago, Rick N. MI said:

Do you have any reason to keep the Manticore when you have the Deus 2? It just seems Minelab didn't get the Manticore quite right. I doubt they will change things on the Manticore.

That's a good question.  Neither one are perfect but each one has things I like about them vs the other...BUT neither one has that edge that makes it a TKO over the other.  If I had to pick one to sell today it would be the Manticore but that's because I could sell it fast and get more for it vs the Deus 2 due to the availability of them. I could always get another one when they become more available down the road. I've actually been thinking on doing just that. I've got a big week long trout fishing trip coming up in a few weeks in Arkansas and extra $ wouldn't be a bad idea. *hint hint for those looking for a Manicore*.  

[Steve Herschbach]

9 hours ago, Chase Goldman said:

 Interesting.  Shows that soil mineralization can potentially push pure non-ferrous at depth into the ferrous limit regions (depending on the profile) such that ferrous limits will potentially mask keepers.  This can also potentially happen with the Nox and too much iron bias.

It happens with all VLF discriminating detectors in mineralized ground. The only difference is the depth at which it occurs.