Nexus MP SF detector putting SMF to shame on depth.

Every example of the Nexus machines I have seen has been on mild ground sites. As @Saker noted, Nexus states they will also perform on mineralized soils, hence the MP designation. I think he is on the right track about a Motion All Metal operating mode, but they also have very precise Disc capabilities. Two modes? I do not know, but it's not a run of the mill machine.
 
They do state that its not good for salt water but can handle high mineralization. The MP stands for "Mineral Power" and the machine has a mineral control which is the top left 10 turn pot, and there is a toggle switch to engage it. It also has course and fine ground balance so you should be able to tune it to any ground, except salt water of course.
Tesoro said something similar with their Vaquero and their last detector the Mohave which had a low/high ground mineralization switch. Both detectors were busts where I detect as far as ground handling.

Nexus created some pulse induction coils for the Minelab GP/GPX 3000/5000 detectors and claimed they could handle Australian and SW USA gold prospecting field conditions using those Minelab PIs. That did not workout to be true either.

This is not the fault of Nexus, or Garrett or First Texas or Whites or Tesoro or Minelab, XP or Nokta Makro before the advent of Minelab's Multi IQ. Those companies had to make marketing claims in order to sell their detectors and to a certain extent they were true depending on where they did field testing.
 
In Calabash's testing, the Nexus did poorly in iron unmasking. I probably wouldn't want to use it in a trashy park like environment either. Outright depth though? I've never seen anything like it from a VLF detector.

The following depth comparison video is between the Nexus and the Manticore. The Manticore can just hit a silver half at 14". The Nexus can hit that half at about 22", albeit a few inches of that depth was in the air.

The Manticore can just hit a silver half at 14".
Really everybody that bought a Manticore Legend and Deus 2 that has ran in HC post me all the pages of half's found at 12 to 14 inches
I will sure will enjoy reading about them lol
I am a firm believer that 99 percent of coins in undisturbed ground are 12 inches or less oh when someone gets the Nexus I would also like reading about those 24 to 28 inches deep half's .
I thought dowsing rods were fairy dust but I guess not with all the Manticores Legends and Deus2 out there I will have many pages to read about all the 12 to 14 inch deep halfs.
But I have a feeling all I will hear is crickets . sube
 
I have dug several 12”+ deep US clad and US silver quarters and plenty of 11” + deep silver dimes, wheats and Indians along with two 14k wedding bands and plenty of US nickels at 12” deep. Wasn’t using all terrain HC. I was using all terrain general. Maybe a Nexus could hit those targets in high iron mineralization and maybe not. The difference for me is that the Manticore, Deus 2 with its biggest coil and Legend with its biggest coil will hit them AND correctly identify them enough to get me digging with a screwdriver that has an 8” blade. There’s no way I’m doing totally blind, one tone beep/dig metal detecting on 12” + deep targets in a public park with a screwdriver.
 
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I can't say for certain if the very elongated tone is due to the very low recovery speed, but Georgi did state : "The Nexus uses a very low recovery speed, otherwise that depth wouldn't be attainable".

Do you know if that statement was for the MP V3 specifically? I know they have a couple of earlier models like the original MP and the Coronado. I'm curious if there is a difference with recovery speed between the models. I read somewhere where Georgi was talking about the MP V3 having "adaptive recovery speed". I'll see if I can find it again.

I thought this video by Paul Warren showed good recovery speed and unmasking abilities.

 
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Do you know if that statement was for the MP V3 specifically?
The statement derived from Calabash's video comparing the depth between the Nexus MP V3.5 and the Manticore.

From the video's comments:

@mmb2199

14 hours ago
Hi Calabash. It seems to me that its a slow speed detector, the ultimate test would be your'e old colonial house to test on(the place where you where with the manticore and the Deus)?



@georgichaushev5617

13 hours ago
It has to be slow speed. Otherwise, the depth is unattainable. Fast recovery is an arch enemy of depth. Simple as that.
 
A detecting buddy sent me a video about this detector back about a year ago. It seems like a very niche detector. You need a site with little iron and the non-ferrous needs to be to deep for the current crop of digital detectors. It appears depth is all it has going for it, and if the targets aren't beyond our current crop of detectors reach, then whats the point.There are not many places I could use it currently. It also probably has a very steep learning curve if you were coming from SMF digital detectors. I bet it would take an enormous amount of time to properly understand all the nuisances to get the most out of it. The phrase "everything old is new again" comes to mind. There is a reason Tesoro went out of business, and a Tesoro 12.0 like detector is not going to bring SF analog back from the dead in my opinion.
 
It seems like a very niche detector. You need a site with little iron and the non-ferrous needs to be to deep for the current crop of digital detectors. It appears depth is all it has going for it, and if the targets aren't beyond our current crop of detectors reach, then whats the point.
Hi Longbow.

Compared to the current SMF offerings, that Nexus seems very niche to me as well.

Are there targets beyond the reach of our SMF detectors? Well, definitely for the example I gave previously about the swimming sites. Here's another example:

A couple of years ago, an area of our old exhibition grounds was scraped out down to about 10". I was finding Canadian 5 and 10 cent silver coins right below the surface, and down another further 6" or so. Taking into account the 10" of ground scraped off, that means those silvers were 10" to 16" deep. Those Canadian silvers are so tiny that a modern SMF detector would only hit them to around 8" or 9". So in my area, there are plenty of very deep old coins that are beyond the reach of our current SMF detectors.
 
My issue is, I'm not sure I even WANT to dig any deeper than what my current detectors are capable of detecting. Especially without a good idea of what the target could be. I'm old and lazy. Anything deeper than around 12" in this hard packed GA clay is probably going to stay in the ground anyway.
 
No that can't be. I was told by a very self-proclaimed knowledgeable detectorists, that no SF can outperform a SMF in depth. LOL
In low mineralized ground, I see no reason why SF and a similarly weighted SMF wouldn't get about the same depth...low and behold, that's exactly what happens in my low mineralized ground :). Albeit SMF has notably better target ID accuracy. Then again, what about mid to high mineralized ground and salt ground? That's where SF seems to suffer greatly compared Multi-IQ and the like.

Speaking of target ID accuracy, I would like to have seen how deep the Nexus hit that silver half if the discrimination was turned up to just below the copper and silver range. If the signal disappeared at around the same depth as the Manticore (with the manticore showing a proper ID), then the Nexus wouldn't be any better for finding silver, unless someone is crazy enough to dig all lol...that's especially crazy if you're digging down to 22".

Apparently, it seems the Nexus depth is achieved because the recovery speed is extremely low. There might be a little more to it, but that slow recovery speed seems to be the fundamental factor in achieving that depth. As such, I would think if the SMF developers allowed for such a low recovery speed, the depth would be similar between the SMF and the Nexus.

Let's keep in mind that analog detectors just like the Nexus have been developed for decades. I doubt the Nexus is doing something special compared to all those previous SF analog detectors, other than a very low recovery speed. If that is true, then why didn't all those previous developers use a very low recovery speed to get massive depth? Perhaps because it comes at a massive performance hit in all other aspects? Perhaps target ID accuracy at that extreme depth is useless? Or perhaps developers of the modern SMF detectors should allow settings for "Negative Recovery Speed"? Meaning, recovery speed so slow that it will hit at that depth, but target ID accuracy is out of the question.
 
In low mineralized ground, I see no reason why SF and a similarly weighted SMF wouldn't get about the same depth...low and behold, that's exactly what happens in my low mineralized ground :). Albeit SMF has notably better target ID accuracy. Then again, what about mid to high mineralized ground and salt ground? That's where SF seems to suffer greatly compared Multi-IQ and the like.

Speaking of target ID accuracy, I would like to have seen how deep the Nexus hit that silver half if the discrimination was turned up to just below the copper and silver range. If the signal disappeared at around the same depth as the Manticore (with the manticore showing a proper ID), then the Nexus wouldn't be any better for finding silver, unless someone is crazy enough to dig all lol...that's especially crazy if you're digging down to 22".

Apparently, it seems the Nexus depth is achieved because the recovery speed is extremely low. There might be a little more to it, but that slow recovery speed seems to be the fundamental factor in achieving that depth. As such, I would think if the SMF developers allowed for such a low recovery speed, the depth would be similar between the SMF and the Nexus.

Let's keep in mind that analog detectors just like the Nexus have been developed for decades. I doubt the Nexus is doing something special compared to all those previous SF analog detectors, other than a very low recovery speed. If that is true, then why didn't all those previous developers use a very low recovery speed to get massive depth? Perhaps because it comes at a massive performance hit in all other aspects? Perhaps target ID accuracy at that extreme depth is useless? Or perhaps developers of the modern SMF detectors should allow settings for "Negative Recovery Speed"? Meaning, recovery speed so slow that it will hit at that depth, but target ID accuracy is out of the question.
I agree Diga, I was just trying to make a funny.
 
I have recovered in wild silver dimes, quarters, and half dollars, along with copper pennies at or near the absolute max depth of the 800 and Manticore. The ground was very mild. Basically fine sand and I've had pretty stellar I.D.'s and great tone. At two of these places I could easily call pennies from dimes at honest 9"-10". One half dollar at least 12", but I think it was actually more like 14". I like to have an idea of what I'm digging. I think knowing what you are digging is near impossible with the Nexus. Does it even have a depth meter? I'd love to try the Nexus out at these sites mentioned here, but I am not paying for one to do it.
 
Well, notice how exceptionally elongated the tone is on that extremely deep coin, as well as the very slow sweep speed. That elongated tone and slow sweep speed, must mean an unusually low recovery speed
It's using a 'cumulative signal mode' (not sure what the correct term is). Basically it operates like a pinpoint mode that very slowly attenuates / detunes over time. Two box detectors / Deus 2 Extreme hunter have these types of modes too.

A lot of people don't realize the pinpoint mode on metal detectors is the deepest mode (because a pinpoint mode responds to literally any change in strength of the response without regard to discrimination or other filters). Props to Nexus for having a mode like this, but for 99%+ of people / hunting scenarios I think this style of mode would be nearly unusable. I honestly can only see this being useful for meteorite hunting, as I personally have never been to a location with super deep, desirable targets that wasn't also polluted with iron and surface targets.

I'd be interested to hear if other people hunt in locations that have soil in which only deep desirable targets exist below an empty top layer of mild soil.

This is why backyard metal detecting tests can often create unrealistic impressions of things. I don't personally do much metal detecting from atop a ladder through a layer of air.

Edit: I am amused that he finally realized concrete is actually a conductive medium after the Nexus goes wild on it. I once told him that but he said it didn't appear to affect the operation of the detectors and didn't seem to believe me. Digital detectors have 'memory' which allows it to make decisions using past recent data so it can recognize a slowly changing signal as ground response and then ignore it. Which is why the modern digital detectors don't go bananas when swung over concrete, it's still impacting the interaction, but its being ignored as a ground response. Same goes for changing coil height, notice the Nexus likes to make tones if the swing isn't perfectly level, or if you bob the coil up and down, where modern digital detectors are able to more effectively compensate for it. When you ground balance a modern digital detector, this compensation is temporarily disabled during the process, so you can hear how moving the coil up and down causes a ground response.
 
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It's using a 'cumulative signal mode' (not sure what the correct term is). Basically it operates like a pinpoint mode that very slowly attenuates / detunes over time. Two box detectors / Deus 2 Extreme hunter have these types of modes too.
Hi AC.

Interesting you should mention that, because someone did mention that the Nexus kind of operates like a pinpoint mode. Any idea why modern SMF detecors don't have such as an optional search mode? Hmmm. Could be for the same reason that Iffy Signals gave up on the Nexus :)
 
Hi AC.

Interesting you should mention that, because someone did mention that the Nexus kind of operates like a pinpoint mode. Any idea why modern SMF detecors don't have such as an optional search mode? Hmmm. Could be for the same reason that Iffy Signals gave up on the Nexus :)
Yup exactly, I think its such a niche mode that can only be used for very specific goals in very specific scenarios that its low priority. Also since it could be outright dysfunctional for many, people would think its broken, which is problematic from a 'product standpoint'.

Though to be fair the XP Deus 2' Extreme hunter does have the same mode and is SMF.

I don't really know Iffy's detecting environment / goals, but this type of mode is problematic in the park, field, beach, etc. which rules out 99% of the areas where people detect. Honestly, the only scenario I could think of where I would want to use such a mode would be if I was meteorite hunting in a forest where there has been no human activity, since the meteorites would be deep and large, and there wouldnt be huge amounts of surface trash to make the detector constantly go wild. It's no coincidence that finding meteorites would be an example use of the XP Extreme Hunter intended purposes. Also, I'd rather go 2 Box and get my magnetic field as large as possible (lower magnetic flux density means less sensitivity to smaller surface targets, while still interacting well with larger deep ones) as well as a greater distance away from the ground.
 
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Many modern SMFs do have a pinpoint mode that stays on without having to hold down the pinpoint button. Deus 2 even has an Auto Tone On/Off toggle. Nokta chose to force the user to hold down the pinpoint button while pinpointing which is one of the very few things that I don’t like about the Legend. I have hunted for extended periods with the Equinox 800 and 900 while gold prospecting in their gold modes in pinpoint mode which will hit nearly microscopic targets.
 
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Many modern SMFs do have a pinpoint mode that stays on without having to hold down the pinpoint button. Deus 2 evenhas an Auto Tone On/Off toggle. Nokta chose to force the user to hold down the pinpoint button while pinpointing which is one of the very few things that I don’t like about the Legend. I have hunted for extended periods with the Equinox 800 and 900 while gold prospecting in their gold modes in pinpoint mode which will hit nearly microscopic targets.
Yup! Its almost a shame its called 'pinpoint mode' because it has the effect of convincing people that is its only purpose. It's also great for analyzing possible iron masking scenarios.
 
When I wrote post #50, I did keep in mind that some detectors do have a pinpoint mode that can remain on without holding in the button. I was more referring as to why pinpoint point isn't normally known as an alternate search mode. Do any manuals even state that? Then again, the Nexus employs only something "similar" to pinpoint mode. Correct?

I really would like to know how the Nexus achieves such extreme depth. Can something as simple as a type of pinpoint point explain it? That seems unlikely to me. I think that extreme depth has more to do with an extremely low fixed recovery speed.
 
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