Colorado Minerals and GTI 2500 Coil Question

[grumpy]

Anyone out there using a 2500 in our blessed mineralized country of the rockies tried the large double d coil on their machine. We hunt along the arkansas river area and the two imagine coils are pretty much unusable in these areas but Im wondering since my 5 by 10 coil works so well and I want some more depth if anyone has experience with this coil( 10 by 14 ) . Any info on the newer 9.5 imagine with minerals also would be appreciated.
Flyfishing and scenery are great where we live but the metal detecting can be shall we say be agrivating at times.
Thanks for a great forum
Grumpy

 

[Uncle Willy]

The DD is designed for mineralization and should serve you well. Have you tried reducing the sensitivity on the stock coil? And the new PROformance coil should be a little more stable but the DD would be the way to go. I have a field test on it at losttreasure.com

Bill

 

[grumpy]

Bill
Thanks much. Very good write up I enjoyed and think I will get one ordered next week. On the original coil I had the 9.5 because I wanted to use the imag feature and try and go deep but the thing went whaco here in our area much worse than normal, usually I can use it just only at about 6 to 9 sens. but it went on the growl war path and sooo called Mary and returned it she said it was a bad coil. Well the service and such was lightning fast at garrett as always and within about 4 days I had a new one but as luck would have it (my luck) I opened the new coil and put it back on its lower rod but something didnt sound right , rattle rattle hummm, never haveing one rattle I took the new one for a test drive and guess it will have to go back without even needing to bother Mary. The coil will pick up and work fine with a quater on top the ground and very little growl but more than the original new one before it went bad but I burried a quater in nice clean ground 3 inches and on factory pre set coin, jewely and zero it will only ping the quater one way. I moved around the hole to all four sides and still the same results and sometimes it will miss it all together, and on pinpoint it will growl at the quater at about 2 in from the ground. Also noticed that pinpoint is off on the replacement coil which I have never had problems with on the 9.5 imag. before it usually is withing 1/2 of the center of that hole. Glad I did save the box to ship it in. I do think however they are great little coils when they are working I just have had a run of bad luck with the 9.5 and I have no doubt it will be corrected without any problem. I am looking forward to getting the new and improved one someday, I think the construction will be much better.
The 10 by 14 I think will be wonderful for what I want to do and get me down where I need to be. or at least where I think I need to be. Thanks again for the help.
Grumpy

 

[Uncle Willy]

When they sent a new coil did they send the new PROformance model. If not I would request it in place of the Scorcher. It's a much more stable coil. Running low sensitivity helps a great deal in high mineralization. I often run my GTI's at 6 to 6.5 with no problem or no great loss of depth.

Had one 2500 user who ran high senstivity and I convinced him to bump it down to about 6 or 6.5. He went back to a park he had hammered for years and found a slew of old coins he had missed before. He is now a believer. You don't need real high sensitivity to go deep. High sensitivity is like driving in thick fog and kicking your brights on. All they do is bounce back in your face and you can't see squat. Detector sensitivity works the same way.

Bill

 

[grumpy]

No they sent the old white one. I think I will send it and see if I can get either another or a new version even if they would trade for a reasonable fee that would be fine.
I took the thing back out in the yard again this evening to do some experimenting to get more info and I buried another quater at 3 inches flat, and laid one on the ground flat and getting any closer to the ground than 2 or 3 inches got a growl and the buried one only would ring one direction (strange). My first original coil worked quite well before it developed a crack in it even at factory reboot. So I tried all the way down to 5 on the sens. and everything seemed to stay the same at 5 I seemed to have to slow down to pick up the burried quater going even the one way. Going to take it to town tomorrow and try a park that is about a foot plus of good clean topsoil that I have hunted several times with all my coils and if it acts up there Ill know 100% that it is going back.
Got another question for you. If you hunt in all metals with the imag. coils and all your own custom settings and such will it still image?? I never hunt with anything except the 5 by 10 in all metals and the question just poped into the old head. This would be a plus as you could size things up more before diging even tho it wont belltone to help you make the decision. I usually just dig it. Im the only guy my age I know with pants with the knees worn out. I even have ziplock knee pads just to lazy to put them on.
Thanks and have a good one
Grumpy