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Steve Herschbach

My First Impression Of The Minelab Gold Monster 1000

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6 hours ago, dgatleyDP said:

Alaska vs the 7000 (particularly the Nome inland area) - where "variable ground" conditions rule....  Do you think the the GM1000 might work as effectively, or possibly better than the GPZ7000?   You have far more knowledge of the ground conditions in AK than I, so i lean on that experience in this question. Thanks Steve, for the excellent job you do with this site!

I have said in the past that the GPZ 7000 is like a "Super VLF" in the way it operates and reacts, but with the PI dual tone twist.

If I gave you the impression however that a Gold Monster 1000 handles variable ground better than a GPZ 7000 that is dead wrong. I am talking about in comparison to other "high frequency" induction balance detectors running at 30 kHz and higher.

The only situation where a GM1000 beats a GPZ 7000 is in A. hitting tiny sub-grain bits of gold and B. employing ferrous discrimination if needed. But for sheer depth in bad ground the GPZ 7000 is just going to blow the GM1000 away.

I will still be using a GPZ 7000 for nearly all my detecting. The GM1000 will be for more for quick recon work in rough terrain, particularly where tiny bits of ferrous trash lurk, like logging country. Or for picking over a lode mine dump looking for small gold in quartz specimens. That sort of stuff. The same reason why many people are now using a GPZ 7000 but also have some other VLF detector along.

Alaska is a different case with miles of tailing piles, relatively low mineralization, large nuggets, and lots of deep ferrous junk. Those conditions still tend to favor a good mid-frequency detector with a largish coil. Almost anything running at 13 - 20 khz and with an Ultimate 13 type coil makes a good Alaska tailing pile machine. The GM1000 would be better in Alaska for shallow bedrock until a larger coil is available to tackle deep tailing piles.

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My treasurer bought it, ordered it last night, Steves titbit for 4m members done it.

Northeast don`t dilly dally, you know when we grow up we just wanna be kids.............

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Nice work Norvic.  I'm heading to Bendigo for 3 days this weekend - if I come home with some decent yellow I'll have some more leverage with the old girl  :smile:

I did see on the other forum I frequent that a person who placed a GM order has received an email to advise that the GM isn't actually available yet and might not be until the end of May/start of June - anyone else been advised of this? 

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I saw that post also, not sure if it is just that dealer, or just Oz, or everywhere. Three more weeks....

Anyway, the Gold Monster 1000 comes with a three piece rod that screws together to form a single 53" long rod.


Well made, but I like a telescoping rod myself. I dug out an old Minelab GP upper shaft and lower rod, works great! Same as used on GPX at this time:

Minelab Straight Upper Shaft for Gold Detectors 3011-0182 US$45.00

Minelab Lower Pole for various Minelab Metal Detectors 3011-0172 US$42.00

Note that you can't just take the GM1000 lower rod and plug it into some other upper shaft assembly due to the flange on top. Otherwise it might fit.

Total weight on my postal scales with AA batteries installed 3 lbs 6.7 oz (3.42 lbs) or 1550 grams. I like it - it will stay on this rod.

I did briefly look at a straight two piece upper shaft with the knurled tightening knob in the middle, but to get proper spacing the GM1000 control box wanted to be clamped down right over the knob and so that will not work - or at least that particular one was not spaced right. If two piece upper shaft you need the upper most section to have at least 20" free and clear to mount the control box and armrest.



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Questions Steve being that the GM rods screw together was there any issues with them coming loose like if you bumped a rock or something ?-Also how did it do as far as tipping over when sitting it down? it looks like it might be top heavy-Thanks in advance-Mike C...:ph34r: 

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Mike, if you look at that join in my picture above, there is a o-ring visible. Not so visible is a large flat rubber washer just to the left of it in the photo, that forms a gasket between sections. Here it is better lit - click for larger version...


If you half heartedly screw the section together and then bang the coil around a lot it could loosen and twist. You need to screw the sections together enough for that gasket to squash slightly, making for a very tight joint. It really is near impossible to do this properly with just the bare shaft in hand. I mounted the control box and coil, then used them to get enough leverage to get it tight. Of course when I took it apart removing control box and coil first, I could not get the rod sections apart with just bare hands. You either do things in the right order, have stronger hands than I (probably would not take much!) or use some sort of soft clamping tools.

I think it is best set up as a stay in one piece unit with rod sections firmly screwed together, or go to a standard telescoping rod setup like I have done.

The unit is as tippy as dozens of other VLF detectors - Fishers, Garretts, other Minelab's, etc. No better or worse. That was always a big plus for the Whites horizontal metal box design. My DFX stays upright, everything else falls over. In the photo below the Impact is slightly more stable than the other three, which are a toss up for tipping.

Trivia question. Which unit below can be operated without worry in the rain without a rain cover?


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2 hours ago, Steve Herschbach said:

Trivia question. Which unit below can be operated without worry in the rain without a rain cover?


Is it the GM 1000? 


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I looked over on Rob's and Chris forum to see if anything is being said about the Gold Monster 1000.

Well i'll tell you this I've seen more activity in a funeral home than I seen on the above forums.

I got my Gold Monster 1000 on order from Rob but no word today.

Steve posted his review of the GM 1000 on each but not one reply so far.

Just odd


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I kind of hated spamming the forums like that. I waited all day and finally figured what the heck. Maybe everyone interested already saw it here?

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    • By Steve Herschbach
      I am just back from a little detector outing and while I was at it I reflected on how once again I seem to do things a bit differently than other people. I am usually shy of talking about my specific settings because I am the last person to claim I know what's best when it comes to other people and how they detect. Ground conditions vary as do people's personal styles and preferences. Therefore I will include my usual caveat here that I am not claiming what I am doing is "the best" way of doing things. On the other hand I do seem to be able to make detectors deliver for me and I am willing to share how I do things in case it may help somebody else. Hopefully that proves to be the case with this post.
      For me the key is knowing my detector and how it reacts on my ground. I then let the detector tell me what to do when it comes to balancing sensitivity and ground responses. The task at hand has a lot to do with it. The Minelab Gold Monster 1000 is from my perspective two different detectors in one package. There are two basic tasks I usually expect to perform with it:
      1. I have an acre of ground I want to detect from end to end. This for me requires using the larger of the two coils included with the GM1000, a blunt tipped 10" DD elliptical. Due to the GM1000 being a very high gain detector in more ways than one, my basic goal here is stability. I want the machine to be well behaved so that I can cover ground relatively quickly without having to deal with spurious false signals that require analysis. I am going to sacrifice a little theoretical "hots" in order to efficiently cover large areas, areas that may or may not contain gold.
      2. I have a 20 foot by 20 foot area that I already know has small gold in it. My goal here is not to cover ground but to clean out the gold. This will at minimum mean running the Gold Monster as hot as possible, and may very well include going to the smaller of the two coils, a 5" round DD. However, I can find gold down around the 1/10th grain (480 grains per Troy ounce) region with the 10" coil and it will hit the larger bits at greater depth in milder ground so I am generally going to stick with the 10" coil unless I really am trying to get the very last flyspecks.
      What follows is predicated on the moderately mineralized ground of northern Nevada, where alkali (salt) ground is as much or more a consideration as small hot rocks. Even small depressions like a hoof print will collect water during a rain, and when almost but not completely dried the small damp spot may create a positive signal if the Gold Monster is running at high sensitivity levels. Once again I will warn that the specific settings I mention will vary under different ground conditions.

      Under the first scenario where I am trying to cover large areas I have found both manual sensitivity and auto sensitivity to be useful. Deciding between the two is as simple as knowing how variable the ground is. If the ground is relatively homogenous with minimal variation then manual sensitivity can work very well. If the ground gets too variable requiring constant burdensome adjustments of the sensitivity control to keep up, then going to auto sensitivity is more efficient.
      What does that mean in actual practice? Let's go over that but first I need to discuss the power up procedure. Much has been made of the necessity to hold the coil in the air as opposed to on the ground when the detector is first powered up. I will admit I am perhaps less stringent as regards that procedure. If I have any nearby electrical power sources, like a power line, cell tower, another detectorist nearby, etc. then I will raise the coil off the ground and point it directly at the tower or other person. This gives the GM1000 the best chance of "seeing" the interference during the few seconds frequency scan so possible interference can be eliminated or at least reduced as much as possible.
      However, in the interest of being completely honest, I have not found the Gold Monster at 45 kHz to be particularly sensitive to electrical interference and while in the middle of nowhere Nevada I often just turn the machine on and go about my business will no ill effects noted. The raise coil and point at nearest electrical source is a very good habit to develop, but in my experience at least it is not as critical for me as it appears to be for others.
      I am always going to use the deep seeking all metal mode whenever possible. This is not just because this mode goes deeper, but also because the coil is more forgiving about reporting items that are not centered well under the coil. The discrimination mode has the net effect of reducing the overall size of the detection area under the coil. This means that when running in the iron discrimination mode more care should be used to overlap sweeps. When my goal is covering ground that little bit of extra ground coverage per sweep does add up and all metal mode helps reduce the chance a nugget will be missed on any given sweep.
      The Gold Monster is noteworthy in that Minelab finally seems to have realized that the speaker actually needs to be loud enough to hear! I am quite enthralled by the boosted audio and the way the smallest targets pop even with my admittedly poor hearing. In fact, the Gold Monster bangs out so loud without headphones that I will often run a notch down from the maximum volume setting - it's so loud that in quiet locations it can be too loud. The volume control is also a secondary sensitivity control in a way, and so I usually run it full out. I do this as much to help create a forced threshold sound as to enhance my ability to hear small targets. More on that later.
      One of the greatest features on the Minelab Gold Monster 1000 is the automatic ground tracking. In my ground at least it is very efficient at effortlessly keeping up not only with ground conditions but in taking the edge off many hot rocks that would be problematic for other detectors. The beauty of this is that it eliminates the need to keep up with and make small adjustments to the ground balance control as would be the case with a detector that lacks an efficient automatic ground balance. I think most companies are equivalent when it comes to many features, but I do think when it comes to automatic ground tracking technology that Minelab has been and continues to be the industry leader. I was a "manual tuning only" diehard for a long time, but my experiences with the Minelab SDC 2300 in particular taught me to let go of that old thought process.
      The automatic ground tracking shifts the burden to the sensitivity control as the prime operational control on the GM1000. Minelab has positioned this control close enough to the center of the control panel that it is easily manipulated up or down with a thumb press by either left or right handed individuals.

      To summarize, I will raise the coil and point it at the nearest electrical source and then I will power the detector up and wait until it completes the frequency scan. The Gold Monster defaults to the last settings and so my machine will already be in all metal mode, but if not I will switch to that. From there I will go to manual sensitivity setting 7 and do a short walk around sweeping the coil over the ground. For me this means the coil is sliding lightly over the ground or no more than a few millimeters over it.
      So far for ground I have been frequenting the magic settings are 6 - 7 - 8. With the Gold Monster at full volume what I am seeking is a very minimal amount of ground feedback. These are very soft sounds that are quite unlike the hard edged pop of a genuine target. These sounds are created by the sensitivity being so high that ground noise is just starting to overcome the ground tracking ability to silence the ground.
      The problem with a silent search machine while in manual ground balance mode is that without a threshold you can end up leaving some performance on the table. If a setting of eight generates a little ground feedback, and you decide to go with 7 to make the machine completely silent, there is nothing wrong with that per se. However, if the ground changes and gets milder you may have the ability to run at a higher level of sensitivity, and without a change in the audio to alert you to a change in the ground, you will just leave the setting where it is.
      In my case if a setting of 7 is completely silent, I will bump to a setting of 8, and this almost always gives me that little ground feedback I want. If 7 is too noisy, I will drop to a setting of 6 and this will probably do the trick for me. The range between each setting seems about perfect for a person to settle on a range of three settings, too little, too much, and just right. For my areas 6 - 7 - 8 are the magic numbers. For worse ground the range may shift lower, to 5 - 6 - 7.
      Try and picture this. At sensitivity 7 I am just scanning along, coil lightly on the ground, with soft ground feedback, waiting for that hard little signal that even the tiniest target will generate. Then all the sudden the machine goes dead quiet. I have entered less mineralized ground. One thumb tap to sensitivity 8, and I get my "false threshold" back.
      Or, at a setting of 7 the machine gets noisier. Maybe a little alkali patch or more mineralized ground. A quick tap down to 6 reduces the feedback to my desired minimal level. What I am doing is letting the ground tracking do its job, and then just bumping the sensitivity up or down a notch to ride the ragged edge of best performance for the ground.
      "Gee Steve, sensitivity 6 - 7 - 8, aren't you giving up lots of depth running at 6 or 7 or anything less than 10"? My air testing...."
      A pox on air tests! They have uses but have little bearing on how to get the best performance out of a detector in the field. I do like to run my detectors hot and that does often mean with some ground noise, but it has to be kept within manageable limits. For the purposes of covering a lot of ground pushing the GM1000 to the edge is good but any farther and everything sounds like a target and knock sensitivity shoots up dramatically, especially at the hyper sensitivity settings of 9 and 10. The reality from what I have seen so far is that the Minelab Gold Monster 1000 at settings of 6 - 7 - 8 will match or exceed most detectors in its class. Let's save manual sensitivity 9 or 10 for my next detecting scenario up next.
      Again, a reminder that 6 - 7 - 8 is working well for me in moderate ground. In more mineralized ground it may be 5 - 6 - 7 or even 4 - 5 - 6. If you simply listen to the machine it will tell you where you need to be. Too high, too low - just right. I have actually found gold with the sensitivity as low as 3 when in some nasty salt encrusted ground. People seem so adverse to lowering sensitivity I often wonder how many would just give up before going that low. It just can't find gold set that low, can it? Yes it can. You either tame the ground or go home and even though depth is reduced you can still find gold a low sensitivity settings if that is what it takes to get stable performance in the worst ground.
      So what about auto sensitivity? Simple really. If you are finding that you are having to bump the sensitivity up and down too often (you will know when that is for you) then it is time for Auto sensitivity. Auto sensitivity is different than manual in that you can trust it to keep the detector at the optimum level even if running silent. In general Auto is the silent running mode whereas Auto+ usually introduces a slight amount of ground feedback at full volume. As I mentioned earlier the volume control acts as a secondary sensitivity filter and running it lower can reduce or eliminate slight ground noise while still allowing targets to sound off loud and clear. Auto+ works best for me in most places but if need be I can drop to simple Auto for more difficult variable ground where Auto+ may get too noisy.
      OK, we have been hunting as described above and get a target. What next? If you are digging everything, a good practice, then just recover that target. If it is faint, either bumping the manual sensitivity up two points or dropping out of Auto into a high manual setting can aid greatly in pinpointing and recovering the target.
      What about trash? Too much and I don't want to dig them all? I am hunting in all metal mode and I rely on the meter to make a dig or no dig decision. In some ways it is a probability thing. If a few sweeps over the target from various directions produce a series of "hard left" ferrous meter responses, the target is likely ferrous. My goal is to try and coax a non-ferrous response with the meter kicking to the right. Just one non-ferrous response raises the odds you have a non-ferrous target. Even then I might pass in a trashy area, but two or more non-ferrous responses and you had better just dig it. Small nuggets in mineralized soil are fighting the ferrous content of the soil itself and in bad ground the ferrous ground response often wins. If you are looking for gold look for reasons to dig targets, not reasons to walk away. The amount of trash will help determine just how aggressive or lax you decide to be in these dig or no-dig decisions.
      Running is disc mode should be reserved for situations where there is no other option. It may be needed to eliminate a certain hot rock response. Or there may be multiple trash targets per swing - you can't analyze them all. The iron discrimination mode can be a real lifesaver in these instances.
      However, consider the borderline nugget that will read ferrous seven out of ten swings. That means you only have a 30% chance on a single pass over the target of having the machine give an audio non-ferrous report while in iron discrimination mode. The odds are even worse if you are not perfectly over the target, a bit too high, or swinging a little too fast. If the detector decides ferrous on that first pass, you get no sound and go right by, never knowing it was there. This is where detectors with a ferrous tone have the advantage in alerting you to every target so you can double or triple check. With a silent rejection system you get just one chance at the target and if the detector is wrong, the nugget is missed.

      Minelab Gold Monster 1000 Iron Discrimination Mode Versus All Metal Mode
      All metal is more forgiving in multiple ways, but mostly by alerting you to every target, allowing you to stop, get the coil lower if need be, slow the sweep, change the angle, etc. all with the goal of trying to coax a non-ferrous response from the target. I highly recommend that if you use discrimination you use it sparingly and conservatively, and only go to full blown iron disc mode it you must. We all have a different threshold for when that will be but rest assured hot rocks or thick trash will pretty much force the issue.
      That sure sounds complicated! In practice, hunting at sensitivity 6, I am going to get a signal. If it is faint, I will bump the sensitivity a couple notches now that I am on target. Too hot for general hunting but fine for spot checks. The target response will enhance, giving much surer results on the discrimination meter, and allowing for easier pinpointing and recovery. Target in pouch, sensitivity back down two notches and I am on my way again.
      For extreme ground JP has a bit more complicated method for getting back into the hunt as described here. For me personally hunting in moderate ground simply going back to my base sensitivity setting and swinging away is working fine. Again however, I am discussing just general detecting at this point, not getting the best and finest edge on the performance. Which leads me to....
      ...that 20 foot by 20 foot spot I want to clean out. The 5" coil has an edge on the really tiny gold and in more mineralized ground in particular it "sees" less ground and is the coil of choice for cleanup duty. In moderate ground I run the Monster at manual sensitivity 10 and much like running my GPZ 7000 fully maxed out with Steve's Insanely Hot Settings I tame the machine strictly through coil control. This means moving at a crawl, and because at sensitivity 9 and especially 10 some knock sensitivity is introduced, I employ my magical ability to keep a coil 1 mm off the ground while never touching anything. In severe ground sensitivity 9 or 10 may not be attainable at all, and as always I defer to JP and his operating procedures for dealing with really bad ground. But for my milder ground I can crank the GM1000 all the way up and even with the 10" coil hit gold down to around 1/10th grain and with the 5" coil smaller yet. Again, extreme coil control is the answer here but the catch is that you are never going to cover much ground in a day doing this. If covering ground is the goal, stick with more stable settings. But if you want to chase flyspecks (they do add up) then be very patient while working the coil and the Minelab Gold Monster is pretty amazing in what it can do.
      I do hope this helps somebody somewhere. Again, all I am doing is telling you what I am doing and what is working for me. If you prefer to do something different by all means - I am not trying to say these settings are the "best settings" as in my opinion there simply is no such thing. The best settings for my wife would probably be Auto sensitivity while in disc mode. "Here honey, swing this closely over the ground, and if it goes beep, dig it up." Different ground and different experience levels mean different settings. Never be afraid to experiment. If you only use settings you find on a website and never experiment yourself you will never truly learn any detector and what works best for your circumstances. Good luck out there and above all, have fun!
      More Information On the Minelab Gold Monster 1000 Sensitivity Settings
      Photo below: Some gold I just found, 4.9 grams total. The top four nuggets were found with the GPZ 7000 (largest nugget 2.2 grams) and the bottom nine with the Gold Monster 1000 (smallest flake ?? gram) using the methods described above.

    • By 57buick
      Was thinking of picking up a  more dedicated nugget detector. I am debating a Minelab Gold Monster vs one of the many Gold Bug versions? Anybody have experience with the GM 1000 to compare?
    • By Steve Herschbach
      OK, I would never have considered the Gold Monster as a coin detector. Micro jewelry maybe, but coin detecting? Well, in the U.K. most detecting is "dig all non-ferrous" and there is a need for sensitivity to small items because Celtic gold and cut silver coins are small targets. Still, I was quite surprised to see this posted on the Minelab Facebook page. Food for thought for owners of the GM1000.

    • By robbiemvfc
      Hi All,
      This is my first post  :)
      I wanted to share my experience as a novice.
      My daughter and I were watching a you tube Video on gold detecting and we decided that it would be a fun thing to do together. So I went and spoke to a dealer and he suggested the GM1000.
      There was only the one review at the time that was very positive. 
      Four/ five months later and I have been out six times with my new GM1000 to Various locations within the golden triangle , All I had to show from it was a crap load of junk and a heap lead shots.
      I started seeing more reviews pop up so naturally I was  reading/watching the reviews on the GM. ( a lot weren’t good)
      I started to doubt myself and my machine.
      So I decided I need to go out with someone to tell me what I am doing wrong and to see if I had wasted my money.
      Via Facebook I discovered someone and went out with him for the day.
      He restored my faith in it and I learnt to trust the detector.
      The other thing I learnt was how to run it in manual successfully.
      After the training I went out again and it finally happened . I found the yellow stuff , Not just one bit either.
      Now I can’t retire on the two little bits (0ne .4g and the other .2g)
      However God it feels bloody good !
      Now I do plan on getting a PI detector at a later stage when funding permits however in the mean time I can now know that the GM can do what it was sold to me as.
      Good luck everyone!

    • By kiwijw
      How the GOLD MONSTER 1000 complements your go-to Premium Gold Detector By John Wilson
      “It dawned on me very early on in my gold detecting days that relying on one detector was not going to give me the best chance to recover the majority of gold on offer from all the goldfields that I frequent.  Using one detector was just not going to get the job done.  I would say that most of us who are more serious in our quest to find gold will know this and will very likely have multiple detectors for multiple uses.
      The more serious of us gold prospectors will rely on at least one of the premium Minelab Pulse Induction detectors, such as the SDC 2300, GPX-4500 or the GPX 5000, while a number of us will have the Minelab flagship GPZ 7000.  However, I strongly suggest you also consider a single high frequency VLF to maximise your gold recovery as relying on just one of the ‘big boys’ alone may mean you are missing out on plenty of gold.  Let me explain…..”
      Best of luck out there