Steve Herschbach

Hi Jason, You are using the outside diameter of the coils to figure area of an ellipse, whereas the blog entry referenced is using a best fit at the outer edge of the TX and RX windings. This makes the 19" x 18" coil closer to 18.68" x 16.65" and the 145" x 13" coil closer to 13.27" x 11.96". These measurements in turn deliver the 96% (95.8%) larger area as referred to in the blog entry. See the diagram below. I think the basic premise that the coil is underperforming is flawed and so attempting to figure out why that may be is an exercise in futility. Again, I think this all comes from Minelab trying to get all scientific about things and put numbers on relative performance. It gets them in trouble every time, but here we go again. Same story, different act. New Minelab item comes out, much pulling of hair commences, product deemed deficient compared to people's expectations. Then time passes and item praised later as best thing ever as expectations adjust to reality. Most recent examples, GPZ 7000 itself and SDC 2300, and earlier virtually every SD, GP, and GPX model. I never thought a larger coil was going to be magical myself as every oversized coil I ever got in the past came with too many expectations that quickly were dashed on reality. Reality is those big deep nuggets just out of reach are far rarer than people think. Oh well, I should just let it all settle out without comment as I come off sounding like I am making excuses for Minelab. It is just all so predictable however.

Excellent point Steven. Usually a larger coil does cover more ground in a given period of time and that alone can result in more gold. However, for myself at least the GPZ 19 would not be a general hunt coil but one intended for hunting specific areas very carefully looking for suspected deep, large nuggets. When used like that I would very likely slow way down, especially given the extra weight of the coil and need to keep it under careful control for best performance. There may be those who can swing that big coil all day long just as fast as they can swing the GPZ 14 but I am not one of them.

Hi Dave, Actually the disclaimer has been out there since day one though now it is more detailed, as can be seen in the post of the materials originally at http://www.detectorprospector.com/forum/topic/2584-minelab-gpz-19-coil-full-official-information-release/ Not that it matters. Either you are happy with the coil or you are not - I hope things improve for you on that score.

Minelab just updated the October 26 blog entry at http://www.minelab.com/usa/go-minelabbing/treasure-talk/the-gpz-19-coil-does-it-really-detect-30-deeper to add the following information at the end of the entry. Note that to get good coverage it is the smaller receive windings that matter, not the larger center transmit winding.

I am surprised not one answer on this one. But a lot of people here are swinging a GPZ so that may be part of it.

A new Treasure Talk blog by Jonathan Porter. "Following on from my last blog about the GPZ 19 coil, here are some further tips to help you get the best from your GPZ 7000, irrespective of which coil you are using. The GPZ 7000 is not difficult once you come to terms with the way the technology performs over the ground. It is a blend of behaviours which are dictated by ZVT technology, the Super-D coil design and the detector’s ability to tap into the full gamut of target information, thanks to being able to run a very low noise floor without any major trade-offs to audio stability." Read the rest at http://www.minelab.com/usa/go-minelabbing/treasure-talk/better-understanding-zero-voltage-transmission-zvt

Welcome to the forum! It just depends on the ground mineralization and settings. Here are some air tests of the Lobo along with settings used you can use to bench test your machine...

I have not used both but I hate to see questions go unanswered so will offer an opinion. I doubt the performance difference is enough to worry about. To me the big difference is an open spoke design versus closed design. The NEL coil is a couple ounces lighter but the Fisher coil less likely to hang up on stubble or other obstructions. I would consider the type of terrain you are hunting very carefully and think about which physical design would work best for you.

41 pages packed full of photos and stories of metal detector finds download here.

New thread

As usual the focus becomes the marketing and the presumed accuracy thereof. Minelab would be better served to just release a coil like this and say "covers more ground, detects larger nuggets deeper" and leave it at that. Here are Minelab's numbers regarding the difference between the GPZ 14 and GPZ 19 coils for reference http://www.minelab.com/usa/go-minelabbing/treasure-talk/the-gpz-19-coil-does-it-really-detect-30-deeper

Now it is called Garrett Z-Lynk Wireless.

You can now read the material JP referenced above at Minelab's Treasure Talk blog Practical tips for using the new GPZ 19 Super-D coil My main take away from the article "You will find there is a reduction in sensitivity to small targets which means the sub 2 gram pieces are going to have to be either shallow to pick them up or you’re going to have to be prepared to go without while you wait for a subtle deep target."

Well, according to Andy one frequency only, but the video goes to great pains to show the use of multiple frequencies. Whatever. The key quote from Andy "XP has said that there will be a Gold-Only model available worldwide next year". So time will tell. Thanks for the link Rick.

In my opinion, if it was just for nugget detecting only, the G2 will find any gold the G2+ will find. All the extra features are just that, so it really just depends if any of those extra features are worth the extra money to you. Just a reminder - the Tek G2+ and Fisher F19 are the same detector, but with different coils and handle grip setups. I like the G2+ handle/grip better but prefer the solid elliptical coil on the F19 so as usual no one detector seems to make me totally happy!

Hi Rod, The problem with questions like these is finding someone who owns all the machines you are interested in and who is willing to take their time to do tests for you. I have used all those machines but currently own only one of them. And at the end of the day it depends on the exact nugget and the exact ground - what exactly does "fairly mineralized" really mean? Which coils? Stock coils? Or should an attempt be made to equalize coil sizes and types? In low to moderate ground I will bet on the Gold Bug Pro and the Gold Racer. As the mineralization cranks up, at some point the PI detectors will have the edge. So when you say fairly mineralized ground it could be a horse race. Depths expected maybe an inch or two. Another way to frame the question is "We are going looking for 0.3 gram gold nuggets in fairly mineralized soil. Given the choice of a Whites TDI original, a Garrett Infinium, a Gold Bug Pro, or a Makro Gold Racer, which would you take with you?" Me personally I would grab the Gold Racer. Runner up Gold Bug Pro. Hunting 0.3 gram nuggets with a TDI or Infinium is challenging under any conditions as neither of those machines would be noted for small gold capability. Sorry to not be more specific but all I can do is offer generalities based on my past use of those detectors. The question I obsess over these days is where do I go next to have a decent shot at finding gold? The detector part is the easy part. Finding good ground? Getting harder every day.

Hello Franck - yes I remember you! If all you have used is the SDC 2300 the ground may be more mineralized than you think. The SDC ignores nearly all bad ground, one of its best features. If you use a VLF things may change dramatically. I spent most of my career detecting in Alaska in the rain. Any good metal detector will work in rainy climates with just minimal care. However, being waterproof is a plus in a rain forest, no doubt about it. Any VLF gold detector listed at http://www.detectorprospector.com/gold-prospecting-guides/steve-guide-gold-nugget-detectors.htm will do the job and people all have their favorites. My favorites change year to year, so it is not the sort of thing there are firm answers about. To my mind nearly all 13 - 15 kHz detectors are close enough I would use any of them and be happy, and the 19 kHz group has a bit of an edge on the tiny stuff. Rather than go on about it all day though I will offer a couple picks. The Gold Bug Pro (19 kHz) is one of the most popular VLF nugget detectors ever made and used all over the world. A very safe choice. If waterproof was desirable, the Garrett AT Gold (18 kHz) is a very good alternative, one I might use myself in a very wet environment. Just my opinion as others will have other ideas, no less valid. There are simply too many good detectors these days and that makes it confusing, but at the same time hard to go wrong. The real difference does lie more with the proficiency of the person using the machine than in the tiny differences between the detectors themselves.

From http://www.detectorprospector.com/forum/topic/2464-xp-deus-v4-new-accessories-announcement/?do=findComment&comment=28697 "The Deus technology is very different to many other products available on todays market. However due to the technical aspects involved, time is needed to research and develop our products in order to maintain our very high standards. A test phase will take place in October and November 2016, and then, we will be able to announce a launch date." I read that to mean testing is still underway. I personally doubt you will see this coil in people's hands until next year.

That will not happen Chuck. This is a variant being marketed in Africa and frankly that was the goal of the project the whole time in my opinion. The Deus add on coils and update are just a side show. The real money is in Africa. I really do hope they make this model directly available outside Africa. If not XP would have some explaining to do to prospectors elsewhere in the world. Note 9/14/2018 - It took almost two years but it appears the Depar DPR 600 is finally coming to countries other than Africa - announcing the new XP ORX!

Interesting - a dedicated gold machine by XP incorporating the new high frequency coil and marketed in Africa at a very low price, only $680 http://www.depardetector.com/product/depar/dpr-600/912/511 Note 9/14/2018 - It took almost two years but it appears the Depar DPR 600 is finally coming to countries other than Africa - announcing the new XP ORX! Depar DPR 600 gold nugget detector by XP It certainly raises some questions. The first being, will we be able to buy this machine from XP dealers, or is it some sort of special deal for Depar? Personally I would be irritated by that were it to prove to be the case. I think many people here would rather buy this machine at a far lower price than buying a full blown DEUS and then having to pay even more to get the high frequency coil as an accessory. The video gives an idea how the high frequency coils may act. The elliptical version of the coil is said to operate at 20, 40, and 80 kHz! (See video). Is this what we will see in the high frequency elliptical for the DEUS? The round HF coil is said to operate at 15, 30, and 60 (56) kHz which is in line with what has been previously advertised. Depar DPR 600 Owner's Manual

Looks like you are already having some luck Peg but I wish you some more!

Those are some awesome lumps of gold JP - thanks for posting!

I agree AuWander and lest anyone assume otherwise I did not mean to slight the Chaser. There are many subtle things that make me like a detector, and how it feels on my arm and how it sounds is high on the list. All the more so when depth is so very close on the top of the line machines as to make little difference most of the time. At the end of the day, the more options the better.

Hey Ron, no worries. In one regard it really is nothing new at all. JAMFD - Just Another Mid Frequency Detector in a world already flooded with similar units. I have lost count of the number of single frequency detectors running in the 13 - 15 kHz range. Do we really need another? The new Chaser is intuitive and extremely easy to operate: 5 languages Menu – English, French, Russian, Spanish and Turkish It also features a HELP function in each of the languages in order to make thing easy for the beginner operator With its multi-purpose 14 kHz operating frequency, this exceptional all-terrain metal detector is useful for all kinds of metal detecting: coin shooting, relic hunting, nugget hunting, searching for very deep treasures, beach hunting… you name it! 180 units precise VDI scale ID band on the display, showing the conductivity of the different targets, indicating the chosen degree of discrimination Easily adjustable discrimination levels Four preset discrimination programs: DISC ZERO, RELIC, COINS, BEACH. Choice of three audio modes of operation: ONE TONE, DUAL TONE (MIXED), Tonal Identification (MULTITONE) Accurate PINPOINT function with audio and visual indication Easy to use MENU featuring 6 functions having intuitive assigned ICONS: Sensitivity, Volume, High/Low GAIN, Tone, Frequency, Memory (you can save your last used settings) Full Ground Balance capabilities: Automatic (real time terrain tracking), Manual (you can fine tune it according to your specific needs and terrain) and Fixed (factory preset average value) Built-in LED dual torches for illuminating the coil and the area in front of the operator (the operator can activate this function which is very useful for night hunting) High Resolution 256 x 160 pixels illuminated display Available coils: Ultimate 7”, Ultimate 9″ and Ultimate 13” search coils. All search coils are fiber glass reinforced, ultralight, solidly built, waterproof and shock-resistant. Scratch resistant coil covers come standard with all coils.

Well, I do recall that when the White's Vision Spectra came out, Garrett notified White's there was a trademark conflict regarding the name as regarded some old obscure Garrett feature. The Vision became the Spectra V3 and then later V3i. Minelab may or may not play the game more than most but they are not the only ones playing the game.