Has anyone had any experience with these things?
Electromagnetic and magnetic interferences could be extremely annoying when you are looking for that hard to find gold nugget. Most of the noise is picked up by the search coil but a significant level of noise is being picked up as well by the sensitive electronics inside the control box.
The control box is made of aluminium therefore the magnetic field easily penetrates it.
To prove that, approach a magnet to the right side of your detector when switched on.
Millions of less obvious noise signals are interfering with your detector.
We have developed this Shield from the best quality material primarily used in sensitive
medical and scientific electronics. After years of studying and testing different materials we have found this one ticks all the boxes.
I have revisited the places where I've previously cleaned up and found more gold after installing the shield.
It is 0.35 mm thick, held firmly around your control box by the armrest and the new improved version with dual layer shielding on the right side is only 175 g!
We have tested it on the GPX 5000 with amazing results such as quieter threshold, better GB, resulting in slightly increased depth.
The shield allows you to increase the Rx gain by a notch or two without compromising the threshold. Use Inverted Response when hunting for big deep nuggets.
I noticed it on Ebay today while I was looking for a cover for my GPX.
I have noticed I've been able to quieten down my GPX by opening the control box up and scraping some paint away where the shielding touches the casing, on one end they had scraped away paint from one screw point during production, and the other end had no paint scraped away at all by the factory so it's sheilding was basically useless. By scraping paint away from a few areas on each end of the detector I was able to give the GPX a bit of a noticable quieten down. I am sure on later models Minelab would of scraped away more paint but as mine is a very early model made in Australia version this wasn't done.
So now I've got a Gpx 4500 my phobia of headphones is really getting to me, I hate the things.
I want to hook up an external speaker to it, I have tried an external speaker I had laying around and unfortunately the amp on the battery doesn't kick in using it so I assume its to do with it having a stereo plug on it.
Kiwijw mentioned he thinks you need a mono plug for the amp to kick in, if this is the case I'll just cut the end off and add a mono plug but I wanted to be sure before doing this that's what kicks the amp in.
I've also ordered what seems to be the popular speaker for the 4500
However it comes with a 3.5mm mono plug, so I'd need to change that to a 6.5mm plug (1/4")
The problem I see is they're being advertised for GPX detectors looking like this
So they've put a stereo plug on that one, and advertising it for GPX 4500's
Would that not mean the amp won't kick in and you'd need a booster?
Does anyone know for certain what makes the batteries amp kick in?
Even JP sells his one with the stereo plug, I'm puzzled
Hi guys, I have been sending on to Simon (phrunt) some old video footage I took to show him the sensitivity & depth of the 4500 on pretty small gold. using the Minelab 11" Commander Mono coil. That coil found me a lot of gold, small gold. All these clips were taken on the same detecting mission & were pretty much one after the other. The day was windy, as you will see, & it was before my days of using a scoop to retrieve targets. Consequently I got the dropsy's & made a meal of the recovery in the first vid. Hence it dragging on far longer than it should have. Sorry about that. The reason why I never made it public back in the day. I could have edited it but didn't. Just the raw footage. Hope you enjoy. Cheers.
Video # 1
Video # 2
Video # 3
There are more that I will add later. Cheers
Good luck out there
I have stumbled across an opportunity to buy an old GPX4500, it's one that was made in Australia.
There seems to be conflicting opinions of if the new or old one is better, I have read the new one has a gpx 5000 guts in it with things disabled so it runs smoother and ground balances better in hot ground but then others saying they would rather chop off their arm with a toothpick than give up their old GPX4500 for a new one as the old one punches deeper on bigger gold and runs hotter.
It seems most people think the new one is better, would I be right in thinking this?
I've decided I'll get one either way, be it new or this older one.