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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

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.

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.

GPZ - OEM 6000 - OEM 11" 4500 - 14 x 9 EVO & 15 EVO & 19 EVO

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.

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

Would like some words of wisdom from folks who have tried and used the Minelab 10x5 DD coil on a GPX in my case specifically the 4500 and also for coin and small artefact hunting,i will clarify this setup will never be used for nugget hunting and i am looking at using it on a very prolific roman trading villa sites which has produced 1000s of roman coins. The ground conditions are very every high mineral content,so hence why i am using the GPX but also because mist of the smaller roman coinage on the surface and top 4-5 inches have been snagged all ready,so looking to go slightly deeper and find some more. I have a brand new Coiltek 6'' Mono but looking for a DD coil to use the iron rejection,some words of wisdom regarding the Minelab 10x5 DD would be most welcome. Many thanks

Hi guys, Just after some info on these mono coils that came with the SD2200d I purchased recently. Seems odd the guy I bought it off was using these 3 small monos I thought. I haven't used the Machine yet but have put on the only DD it came with which was a 14" Coiltek DD which ill try this coming week. I was under the impression these older Minelabs prefer DDs over monos, am I correct in thinking that? The coils mentioned are 6", 8" and 11" monos. I'm also waiting for Nuggetfinder to release the new lighter 25DD and I'll grab one of those to see how this old beast compares to my zed with the 20" Spiral coil. Also, how would the 2200 go as a patch hunter? When I was using a 4500 I was able to swing at a walking pace with the 18" coiltek and often found new patches. I'm just not sure if the 2200 could be used in the same way. I'm fitting a ground balance button this week for convenience. The machine also came with 2 coiltek batteries which are 7 volts from memory and an audio booster.

Yeah, i just can't see how that little coil would work on the 2200. Surely it would be massively noisy in mineralised ground. I used to own a detech" mono and that was noisy on my 4500.

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.

Tyler,i have both 15x12 Commander coils ie DD and Mono,and was planning on using the Mono version on my TDI Pro but never did,it sat in its box for along time hoping that i would get a GPX at some time in the future,basically my TDI sits in the cupboard and no one would be able to tell the difference it is that good condition it looks like it came off the production line a few hours ago. A few months back i was offered a basically new GPX4500 for a very low price as the seller had no idea,so i grabbed it and it came with a stock 11'' Mono and 15x12 DD coil,but i also had about 5-6 Mono coils that i purchased for using on the TDI,but it never happened,the coils have been used more on my GPX since i have had it and finally have my 2 favourite coils for my permission and use which is solely artefact and hoard hunting as i am not after nuggets here in the UK so i purchased a 11'' DD AI coil from Detech as most of my roman detecting is done on a site that has a massive pumping station hence the AI coil and it does work a treat,my 2nd favourite coil is my Coiltek 18'' Elite Mono and that on the 4500 does punch pretty deep on coins and much larger items and reasonably light as well.

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

Thanks Simon, Did you ever get a chance to try one out, curious to know what kind of performance it had working on the 4500/5000 timings. Interesting that they discontinued it, seems like it would offer a good balance between a bundle and full spiral.

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.

Keep in mind though - I said the same statement after using the X Coils (and I got flack for it too). I said to me the X Coils obsolete the need for the NF coil. And I still stand by that statement today. But the NF is good coil - great to those unwilling to cut a cable. But to me, that coil was obsolete before it was even released. Similarly, my 4500 hasn't left my closet since I got X Coils and especially since I got my 6000. The 4500 and 5000 are to me very obsolete platforms - I have zero interest ever running them again. And I believe as a platform, the 7000 itself in terms of electronics design and ergonomics is already close to obsolete if it had any serious competitor. It's an old, stodgy, dinosaur platform to me that feels like how the 3500 felt to me when I first started detecting for gold. If not for the X Coils, I doubt I'd use it much anymore quite honestly, but I also don't do a lot of ultra accurate patch cleaning anymore these days either, clearly there is no equal to it yet there.

A pulse induction detector or similar technology for handling the ground saturation problems will probably be needed there for the iron issues. You might consider the gold sizes you might find there and the price range you’re planning to spend on one. A GPX-4500/4800/5000 are all great detectors for a variety of gold types for a good price. Everything else goes up in price from there or at least until the Algoforce arrives in the US.

I have just watched the video below, that Simon has already commented on. Gotta say , I'm pretty disappointed with those results, even given the EMI. Having just dug a 1.6 grammer from a carefully measured 16 inches, and an 0.14 grammer from 3 inches, with my ZED / 22CC X coil ( which only has an 11 inch centre receive coil ), I would have expected much better from what is effectively a 10 inch round coil. And yes, I know, my ZED / 22CC cost me about $8500 second hand. I'm sure that a 4000 / 4500 / 5000 would get that 2 grammer much deeper, and they can be got from less than $2K second hand for a 4000 ( have just seen one for $1600 ), and they include 3 speeds of automatic ground tracking, numerous performance settings, and the ability to run AI and DD coils. Having said all that, it appears to be okay for a " cheap " machine, and certainly blows the QED out of the water! For me, however, it's all about raw performance, and I could not tolerate a machine with limited depth capabilities, and no auto tracking, which is a must for patch hunting where you don't want to be ground balancing every couple of minutes. Hopefully, ALGO MK2 or MK3 will have auto tracking, and more punch, and then I would most certainly consider one! Cheers, Rick

It came with my 4500. I tried it recently on the Algoforoce, completely lacks the sensitivity I'm used to with spiral coils. Much like the Sadie is less sensitive to small gold than a spiral coil of a greater size. I'd only use the 15x12" for larger targets. I guess in really bad ground or hot rocks a less sensitive coil would be beneficial though. Once you've gone spiral it's hard to go back 🙂

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.

Just a bit about myself. Grew up in outback QLD, Meet my Partner in NT when I was doing tag along tours, prospecting for Garnets and Zircons in the Harts Ranges. We meet up with Mels parents and friends going to WA to prospected for Gold for 3 months. I wasn't into gold really but I did live in a gold area as a child and my parents brought me a gold pan when i was 7. I joined the group traveling with them to find camp spots and where to find watering points, so for the first 2 months I learnt to pan and finely they convinced me to try the 4500 which I now own. We stopped at a spot they showed me how to start the detector and all went off, so I just went near the car detecting and got my first signal under a tree, they all come to see me dig and there was my first piece a gram worth. Off they all went 5 mins later I got another signal so they all came back, another good bit of gold bang I was hooked and have been ever since getting over 1 ounce of gold in WA. Now in Vic, but I have a dam hard time finding gold here as the countryside is so different. I have hit some good patchers over the years here and found gold up to 10 gram nuggets' last one was a 9.6 grams with the GPX 2300 at Christmas time. Also compete in the Gold panning comps at Blackwood and Wedderburn scoring a first and second, but after a serious work accident nearly 2 yrs ago, its a battle to just get out to detected or to compete, but still having a go. One of my daughters just competed in her first gold panning completion and came 3rd she was so happy, and she just done her first token hunt with a detector at the Celebration of Neville Perry Day and for her effort won a gold nugget, so proud of her. G'day everyone looking forward to reading the forums and see all the photo's Cheers Kel

It has to be bundle wound due to the size. Spiral can't fit in there. I have a new model 10x6" bundle mono X-coil on its way to me soon to use on my Agoforce, it's a good size to give a bit of ground coverage but still hold some good sensitivity, I liked the Coiltek 10x5" Joey mono on my 4500 for that reason. 11x6" should be similar and perform well for you. A larger spiral coil will be more sensitive to smaller targets, and deeper though.