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yea, if you're in ground the EVO's on the GPX 4500 were noisy I think you would find the same with the spirals and it's the reason X-coil make standard bundle DOD coils too like the Z-search coils, the sensitivity would be the main benefit other than being able to pick the size coil you really want to use rather than the Z-search which is almost the same size as the stock coil, if you don't need that it's a pointless exercise. As Lesgold was pointing out he was able to find gold deeper with the 12" than the 14x13", that makes sense as at the right size gold there is always a cross over a smaller coil will do better than a bigger one on some gold, even if it's only slightly smaller, pretty hard to find that sweet spot in the wild but I guess they were able to do that with various target checking between the two. As we all know different ground changes results. I cruise around in HY/Normal with a sensitivity of 19, I can easily run 20 with any of the X-coils so I'm one that benefits a lot from the extra sensitivity as it doesn't change my stability at all and we are a place that tiny gold is the gold you're going to find 99% of the time, but I find 19 sensitivity has a more stable threshold which I like and going that extra notch to 20 doesn't seem to provide anything much more than a little bit more unstable threshold. In saying that, the 7000's a dream even at 20 to run for its stability over the 6000. I was just using the 7 with 8" yesterday after not using it for a few months as I wanted to get my money's worth out of the 6000 as if it plays up out of warranty, I'm just getting rid of it, I may even offload it before the warranty runs out as I don't have a lot of faith in it being a long lasting detector, what a smooth nice running detector the GPZ is by comparison, I'd forgotten how smooth it runs compared to the 6000, in fact it was just purring along perfectly.

Interesting. I had a gpx 4500 with 12" evo, 14x9 evo and 15" evo. I now have a gpz and gpx 6000. I have both NF Z search coils. The NF evos I found pretty noisy and difficult to tame, but never really gave the standard bundle wound coils a fair go. One of my mates in WA also used the Coiltek 14" and one of the Romainian coils and reverted back to the 11" bundle wound commander and swears by it. I have had excellent results with the 12" NF, I don't need more sensitivity, I have the 6k for that, I need stability. I find the 12" quieter than the standard 14x13 and of course lighter and better balanced. I often thought about going down the x coil path, but if it's really only going to give more sensitivity, it's not what I'm looking for. Thanks for sharing Phrunt.

I wonder if Aurora's make the PI detectors go crazy? We are getting a lot of them at the moment and that's set to continue, it's probably something a GPX 4500 or similar would be affected by. I know they make my Cars radar detector go a bit funky. Just because we can only see the Aurora at night doesn't mean it's not there at daytime too, could be a potential source of unexplained EMI problems with detectors. My 6000 was running beautifully the same day of an Aurora a few days ago but I'm not so sure something like the 5000 would cope as well.

Well, long story short I got me a 4500. Not without trouble but I got one somewhat cheap. The lcd screen is damaged though and has lines through it. does anyone know where I can get a replacement lcd from? And if it’s a simple plug & play type fix? Surely there’s some equivalent from china that will work..? it’s not BAD but it’s not great and it’s definitely not ideal. Would hate to be out and it stops altogether. cheers lads

Wow! I just received my torus nbo5t in the mail today. I can hear! With my Equinox 800 I heard music with all the tones it has. Now I hear a symphony! The sound quality is amazing over the stock headphones. I played around in my yard, that I've gone over about twenty times, and heard so much more. I used both the speaker and the ear buds. The buds are great in wind. Then I plugged into my gpx 4500 with an adapter. Previously I could not run this machine here because of the emi. I cranked the sensitivity down to 3 and the gain down to 2 to stabilize it. And I could still pick up signals at some depth. I only screwed around with this one for maybe twenty minutes in my pasture where there aren't a lot of signals. Super impressed with what I could find with the way I had to run the detector on such low settings. The penny I should have found before. The pencil extender and eraser clamp was a very complex sound. On the 4500 I was amazed at the depth with such low settings, a horseshoe nail, 22 short, Lead shot, a 22 bullet and and a square nail. The items them selves weren't important. It was finding them. The audio on both speaker and buds was great. With the 4500 I needed to use the buds. I'll have to play around with that. Thanks for the product.

The problem with sharp is they recommend DD coils for it. Sharp (GPX 4500, 4800, 5000) Sharp is similar to Normal but creates a more powerful detection field. It is capable of an improvement in depth, but is more susceptible to interference and will increase the severity of false signals in difficult grounds. This timing is best used in quiet conditions and can work well in combination with Deep Search Mode with a reduced Rx Gain setting. Sharp is an excellent tool for pinpointing faint signals due to the very "sharp" signal response. Sharp will work best with DD coils in most gold field locations. If you look at this chart it has Sharp as blank for monos, blank meaning the timing will work, but other timings will work better.

yep, the 12x6" X-coil for the GPX 4500/5000 was one, it and all of their GPX coils went out of production a couple of years ago though, but maybe their GPX coils will be making a return sometime soon due to the Algoforce increasing demand again.

Minelab have talked a lot about future plans to sell direct and even set up website in Asia as a trial to do so. They're also making the push into big box stores and sporting goods stores. Far bigger exposure in those stores, people see detectors that aren't out looking for them like at dealers and may decide they're interested. The big box stores may start negotiations with Minelab, and Minelab may demand exclusivity of their detectors. The big box store would look at their existing detector sales, do some research, see which brands are most popular and accept Minelab's conditions. They could end up pushing out the original big box store brands and the Go-Finds, X-Terra and Vanquish are perfect for the job. Nokta are creating models ideal for big box stores at great prices but haven't yet made the push to try and get their detectors sold in these stores which is a surprise to me. Why sell your product though a little shop in a back street or someone's garage when you could be in the big mall in the city centre and get high traffic seeing it. Only the biggest and best dealers will be around in a few years. Our only good dealer retired and sold his business, we now just have order takers. An example, I contacted the new owner and requested they keep me on the list for the Sadie for the GPX 6000 that the old dealer had me on, just verifying they knew I wanted one, in turn they said we have the Sadie in stock for the GPX, you can buy this one instead and pointed me to the GPX 4500/5000 Sadie.

When you dive deeper into the patents for the various detectors many are shared between models. The above are the 6000 patents, mostly all older patents except the top one on the list which was a 2019 submission, it relates to shielding in a coil and electronics related to that. The second one down is shared with the SDC 2300. The 3rd one is also shared with the SDC 2300. The 4th one is shared with the GPX 4500/5000 The 5th and last one hidden away at the bottom of the list, also dated quite old first submitted in 2016 is likely the secret sauce to the GPX 6000 over the SDC, a new signal processing technique. It's not shared with any other detector. US10969511B2 - Signal processing technique for a metal detector - Google Patents So, while it does appear the GPX 6000 is just a pumped up SDC with nothing overly new it does have some new technology in it that was good enough to patent, although Minelab would patent their lunch ladies home-made tomato sauce for their canteen pies. The new shielding technique I think is evident too, how good is the 6000 near power lines compared to the prior GPX series. So while Geosense seems nothing more than Auto sensitivity combined with Auto Ground tracking, the secret to the 6000 is not so much Geosense, but the new signal processing technique from the 2016 patent. It goes to show how long they work on detectors though, a 2016 patent being the secret sauce, and they likely worked on it for years before it was a final product for patenting becomes a detector released in 2021. It does make some of the smaller mistakes they make like twisting shafts seem rather crazy when years go into developing the electronics and a couple of days slapping together a shaft that should do the trick. While it shares a lot of DNA with the SDC, more so than the earlier GPX, it's not just an SDC upgrade using all existing technology.

Yesterday, JW and I went for a bit of a hike to a remote spot in the mountains, I hadn't been here at all since my GPX 4500 a few years ago, and JW had been a small few times since trying out his GPX 6000 and found a few bits. The hike in is what puts it on the backburner all the time 🙂 It's a close drive from JW's house, but a big steep uphill hike, and from my house it's about an hour's drive so by the time I get home I'm stuck to the car seat, man it's hard to stand up after a massive hike and an hour's drive home after a day's detecting with the hike back to the car, at least the hike back is downhill all the way. I ran the car's seat heater the whole drive home to help the muscles recover! JW has a few years of age over me, but he is certainly fitter. It's a really cool place to go though, with great views of the surrounding mountains, unfortunately I can't put up scenery photos for fear of revealing the location to prying eyes, as you can work out the basic location by using the bigger mountains to get an idea of where I was. There has been a bit of mining in the area, and reworked in the depression years, but the earlier mining was done with a lot of work and water monitors (canons) blasting water at the hillsides to recover the gold. The Chinese hit it pretty hard too, staying longer than the other miners going over it again. It's interesting how they get somewhere, then just stop. The soils an interesting colour, almost white. Quite the drop off here down to the ground below, but oddly at least I think you'd be crazy not not to detect these high areas, as gold often pops up in the most unusual of places. My first bit of gold for the day was a bit of a surprise to me, it was a fairly faint signal, yet it was very shallow, I thought it is more likely a pellet although this area barely has any pellets at all, in fact it barely has any targets, if you get a target the chances are high its gold, aside from the occasional old bit of miner's junk like cans and a few nails most targets are gold so it's certainly a dig it all location. I took a little video of the target, so weak of a signal for the size of the gold I thought, although I'm more used to using the 10x5" Coiltek which is more sensitive but still, I was pretty disappointed. This is the little scrape of a hole it came from. The piece of gold. And its weight, quite a reasonable size piece for me, anything over .1 is pretty decent size for me 😛 I was so taken back by how weak the signal on it was I tested it this morning with the Algoforce to see how well it would do, even though it has the larger 10" round coil on it, I thought the Algoforce gave a better signal response on this particular piece. It's a bit of rough looking piece. The other interesting thing is it was right next to someone's previous dig hole, probably JW or I, we were likely using older technology at the time, as I'd only been here with my 4500 which no doubt would miss this piece of gold. It's very unlikely this person didn't go over the nugget and they missed it. The joys of newer technology. Next piece was in the path you walk on to hike to this area, there are tracks all over the place, mostly from old miners I guess however now they're hiking trails and go all through the area, you can even walk from one of my favourite ski fields to this area on tracks. This is it's dig hole, another very shallow target, an OK signal. This is the little guy Smaller than the last bit, but a much better signal. Just ignore the shaft twist in this photo, it's a feature of the 6000 🙂 After that I was walking along detecting the path, but no other gold to be found in that particular area, I did find old boot tacks though which is pretty cool, one spot had a bunch of them in one hole so I gave up recovering them, that miners boots must have fallen apart at that spot 🙂 The gold spot is the dig hole just above the pick in this photo. Here is a little video of it, I haven't watched the videos back yet but it likely shows this one had a better target signal than the previous bigger bit I found. It was pretty easy to film gold finds here as there is so little junk about, so filming bits of digs is worthwhile knowing they're likely gold. Next piece was on top of a little ridge It was my biggest bit of the day, had trouble carrying it for the hike back to the car. Deepest of the holes too. A smooth bit. This is its spot. And a little video of it, the second target next to it was one of 2 pellets I found all day. That was my last bit for the day, the day felt like it went really quick though, we finished up detecting about 7pm, but both of us didn't realize the time and thought it was about 5pm I guess. A benefit or a negative depending on how you look at it coming from the GPZ and GPX 5000 is the 6000 can have the pick so close to the coil it's not funny, it always surprises me how close the pick can go, even when you lay it down recovering targets so while using it I have a belt attached pick holder and in this location I am glad I did, as sometimes its half an hour between targets so nice to holster your pick. The super strong magnet I've got in my pick handle makes life easy too, if I'm using it more regularly, I can just attach it to my pick holder using the magnet to save the effort. It stays there when walking around as long as the pick doesn't bottom out on the ground. So other notable things from the day, this piece of quartz was so weird, it doesn't show up as well in the photo but its flat smoothed off and much like a tile or bench top, and really glossy, so weird. You can see the shine on that one side, but the entire flat surface of it is like that, and its smooth and flat although the photo doesn't show that well. It's like someone's cut it smooth and painted it with polyurethane. And my junk for the day, there was also a nail which I left behind and you can see why I say it's a dig it all location. I'm used to digging hundreds of pellets on the farm land locations, this spot, 2 🙂 Both big pellets too. And last but not least, some old miners' tins I found, I left them where they were, a bit of history. I think this tin can was never opened. This one looked like a giant sardine tin. I think I'll get a bit fitter so the hike and day of swinging a detector around going up and over hills and mounds of soils doesn't wear me down so much and go back to this spot more often, I do really like going there, it just takes it out of me. It's very difficult to E-Bike there too as much of the path is on a cliff side with a big drop and very skinny path no more than 40cm wide in many spots, I've done it before but ended up walking the bike much of the way as I wasn't crazy enough to ride it through the steep drop off areas. Today I'm completely jelly legs and walking is a challenge 🙂 JW doubled my gold count, he came away with 6 pieces, pretty small ones too, he was using the GPX 6000 and 10x5" Coiltek coil, a better choice of coil for the day, I think. I only had the NF coil on as it was left on there from a previous time. It was good to take the 6000 out though, leave it much longer and the old motor may seize from lack of use.

As the title mentions,i have the option on buying a brand new Coiltek 18'' Elite mono coil its the 'camo' version at a vastly reduced price that what they are normally priced at,i wont be using it for finding anything small like gold nuggets etc,but mainly hoards or stray coinage allied with scattered hoards. It wont be used all that often but when it is i am certain that i have the right tool for the job,so would like some advice/opinions is this a good coil for my specific use when used with the GPX 4500 ?? Many thanks

So I just received a slightly used elite in the mail today. Won't be able to try it out for a week or three. I have seen posts and had the 15" nf recommended. The one I got was a price I could afford. It's going on a gpx 4500. What are the comparisons? I've tried several different searches here but must not be wording it right.

That seems a reasonable assessment to me, and why I've been pointing out all along 6000 and 7000 owners don't need one unless there is an attribute of it that they particularly like, like 7000 owners wanting a lighter machine to use for some particular reason or they want a PI they can use for stuff other than gold with its excellent Target ID's. I genuinely think GPX 4500/5000 owners would benefit from it, it's doing noticeably better on small gold than those models, along with its ability to find the gold they often miss, the prickly stuff and not just that, I tested a bunch of regular small nuggets commonly found here, and the Algo was doing better than the GPX 5000 by quite a bit, some the 5000 didn't even hit the Algo did. For them it's of even more benefit as they can share coils between detectors, and their Bluetooth transmitter and headphones. While I've never used an Axiom, I've not really known its comparison. The SDC is an iffy one to me, mainly due to my milder soil environment and it was a pretty poor performer here with the original GPX series being far better when fitted with a spiral or smaller bundle coil except for it being poor on the prickly type gold, so that one makes me wonder, as the Algo for me here in my soils is doing better on the smaller gold than the GPX, I have no doubts a GPX will be deeper on big targets though. What I see with the Algo is a whole lot of bang for the buck, half the price of an Axiom, way less than the 6000 and of course the 7000. The perfect detector for people not wanting to spend a lot of money and still get a very good performance machine, but not by any means the best and is filling a large hole in the market for that reason. Its other notable benefit is its very good EMI handling, it can run well in places others cannot. Now the big question hanging over it is benefits outside of prospecting with its Target Id's, how beneficial is that going to be in parkland and beach settings, for me so far, it's looking good.

Although I do not have a GPX 4500 I have been using that little Avantree Relay and the Avantree Torus with every detector I own other than the Legend which has built in aptX LL Bluetooth and that little Relay that @Wiggins sent and it works great no Lag and no cutting in or out, with my Axiom I have not noticed any kind of interference or background noise at all. I keep wondering what Avantree is cooking up since @Wiggins thread

Rick, I am going to start with the 12" X 8" platypus DD coil until I get use to the 4500, then switch to the 11" mono coil to see what I find. When it comes to Minelabs, I have used the SD2000, SD2100, SD2200, and GP3500, but those were used to hunt gold nuggets in Arizona. I have been playing with the GPX 4500, with the 11" mono coil and I am really impressed. I think the biggest coil that I am going to use is the 15" X 12" mono.

Its a shame that Kev from Staffs detecting has retired,have purchased many coils and detectors from him over the years,mainly GPX coils for my TDI Pro,may favourite is the ultra lightweight Coiltek 14x9 Mono but that would not suit detecting in the surf as the coil is foam filled and would float like a cork......my latest purchase from Kevin was my GPX 4500 in amazing condition. End of a era.

I have permission to hunt a property that is a couple miles away from Pea Ridge Battlefield. I have been finding some keepers with my Deus 1, with the 9 " and 11" X35 coils. I recently picked up a GPX 4500 in great shape, with a 12x8 platypus DD coil, 2 11" mono coils, a 11"DD, a 15"x12" mono, and a 18" mono. I going to see what I can find. I have used the SD2000 up to the GP Extreme, but not the GPX 4500. My question to the members is, how good is the iron reject, can it knock out iron the size of 16d rusty nails.

Okay....as I wipe my brow from exasperation......... I did this little 2-Part comparison of these two PIs mostly for me. The GPX 4000, 4500, 4800 and 5000 are detectors that I am familiar with. The Garrett Axiom is fairly new for me. However, I have already seen in person what it can do on smaller sub gram gold nuggets after finding some on my last trip to Arizona. I did not know what else it might be capable of so I did these tests. I also thought maybe some others on this forum might be interested in what the Axiom was reasonably capable of too. So I figured I would post these comparisons on here just as a public service. I immediately got comments about which one is the winner....etc, which was the farthest thing from my mind. Now this has even sparked a how deep can a VLF go and even a VLF versus PI depth debate. OK. Like Chase said, these two tests showed one thing only. They showed what these detectors could do on a hand picked set of targets, at hand picked depths at a hand picked moderately mineralized site that was semi frozen, meaning there was substantial moisture in that erosion cut. Maybe the results would be different at the same spot on a dry soil day and at temperatures well above freezing. Who knows. The second test does show basically a two to one (plus or minus an inch or so) depth ratio between the PIs used and the VLF used. Cool. What I wanted to find out for myself was basically......is the Axiom a competitive PI detector on sub gram and multi gram targets compared to a GPX 4000 with the 4000 using timings and settings that are currently still available on the GPX 4500 and 5000. Like I said repeatedly, Deus 2 was just along for the ride. Y'all can keep going with whatever you want to prove or not.

Both the GPX 4500 and GPX 6000 have no issues with carrot. My Axion on the other hand does. Relic hunting the other day I did a noise cancel twice with the pinpointer on. Then turn it off until I found the next target. As soon as I turned the pinpointer on the Axiom went nuts again. I finally just started turning the Axiom off while I pinpointed the target in the bottom of the hole. Not a huge deal, but is a little frustrating.

On my GPX 4500 it comes with a full harness but i all ready had a new full harness anyway,do you mount the shaft mount for attaching the bungy above or below the camlock ?? only tried the once today above the camlock and suspended from the right handside anchor of the harness.....how do most folks use the bungy on the full harness especially when using the GPX.....only used it today with the 11'' stock coil,do you use the same setup when using a larger coil like say 18'' or do you move the mount down to the lower shaft just below the cam lock ?? Many thanks

So I'm in Idaho and dont see Algoforce making any inroads here for a at least a few months. What can I do to upgrade my gpx 4500 ? Don't have any aftermarket coils but I'm working on it. Are any upgrades going to be worth it? I have have learned a lot on this forum and thank everyone for posting their knowledge. I don't always have the time to geek out on the subtleties that might give me an edge. Yes I have found gold and do my research. I guess I'm asking if the aftermarket coils are worth it?

Looking for a small coil for GPX 4500 Something like a 10x5, or 8" or smaller Would prefer a DD, but will consider Mono

I was watching this video from Woody that he did about 3 months ago, oddly my GPX 4500 had the exact same problem whereby they'd painted the housing causing the alloy front and rear plates not to contact the housing, thereby making the alloy grounding not perform as it was intended so I had to file the paint off and it worked very well. Then with the 6000 it appears they've done the same thing, EMI shielding painted the housing, yet not connected it to the ground of the detector. It's just bizarre how these things take place. I do wonder if this is something that was a problem on early 6000's and they've resolved as they've worked it out, and later ones have the grounding done properly. I've no idea if mines been done or not, and the way he does it is a bit crude although working, I'd not do it that way with the squished washer, the tap washer seems a bit better and something a bit better than one of the fibrous cardboard types might be alright, still I prefer if this is the case and there is a grounding problem on them they fix it as a warranty repair, perhaps as part of the EMI fix with the inductors this was part of their procedures fixing this problem too, as I did notice not only was my detector no longer going crazy randomly it also appeared to be more stable with general EMI.

Thought I would update this post. Anyone else have newer stuff/ideas? Today I took some reloading equipment and gun related stuff to a gun store in Boise I like to thin out some of what I inherited. In a partial trade I picked up two cases. Almost identical, one is a tactical rifle and gear case, the other is a mobile gear crate. The difference being one has a gun tray, the other a deep gear tray. They have small wheels on one end (but no coffee cup holder 😥). The inside dementsions are 39.5"L x 11"W x 9.5"H. Not super padded but I can adjust that accordingly. I can fit two Nox 800's and coils, 6" 11" and 15" plus gear. It does take some spatial aptitude. Or I can fit in a gpx 4500 with coils (15x10 shown. Has holes for locks if desired. Not a pelican case but but a nice option too protect the detector and gear. And it's made USA.

I will buy used GPX 4500 or 5000. Please send me PM.