Question on depth of 12 inch coil

[Prober]

I have a M6 and am contemplating the 12 inch coil. Currently I have found that the stock 9.5 coil only gives depth of around 6 inches...anything over that the signals are garbled. Will the 12 inch coil give greater depth? If so, how much more? I need to be able to find readable targets from 7-9 inches. Thanks gang.

[Tin Nugget]

I have an MXT, not an M6 but they seem to be pretty close in capabilities so I will give my 2 cents here. No small target that deep is going to hit very hard. I am just happy that it is letting me know something is there and anything that deep I am going to dig anyway. I often get VDI's on targets 7-8 inches deep but you can't depend on the info, just have to dig. Past that I have dug really deep targets just based on threshold change, which is the main reason I like a threshold machine versus a tone machine, just my preference. I believe the majority of people prefer the tone machines. All this being said I have to say I have found my deepest targets with the stock coil. Verdicts still out for me though as I have only given the 12" a few workouts and have used the stock coil for 6 years. Also I belong to a club and have detected with people using a wide range of detectors and done allot of "hey, see what you get on this target" comparisons. I haven't seen a machine yet give a reliable ID on any coin or small item that deep. Just have to dig it!

[Prober]

Thanks Tin Nugget, not the info I was hoping for. I was hoping that the 12 inch coil would give a couple more inches...like at least to 8 inches. For the price it ought to do something!

Cosmic, on a previous posting, said that the 12" coil is not much different on small items, but on bigger (quarter) you get about 2" more; halves & dollars 3-4" more. Can anyone attest to that? I read somewhere that the 9.5 coil will go 10-12" but I've found that to be way off. Six inches is about the limit for coins, soda cans and large targets sure it goes deep but I'd rather find old coins than buried soda cans.

[kindafoundabuckle]

The 12 inch coil will give you AT LEAST 2-3 inches easy! Get it and I think you will be very happy!

KFB

[cosmic]

I must have mild soil as the stock coil has many, many coins over 6".. ( Most coins are under 6")The 12" is my favorite coil!!! Yes, much better depth on larger coins... Dug a 50's quarter at a measured 9" last weekend...(I measure most of my finds.. I locate it using my pinpointer in the bottom of the hole in undisturbed soil, if not I don't say a depth, so no falling out of the side or in the bottom in loose dirt ..) You'll will seem to get choppy signals at depth as the cone shaped detection field is smaller and coins will be a very short abrupt signal..Sometimes it only take a wiggle!!

[PENNYHUNTER]

I have a 14 inch coil for my mxt and you do get more depth with a larger coil, and you can cover my real estate with it. But the down side is they do not work in trashy areas.

[xdanthemanx]

I have an xlt and got the 15"er a few weeks ago, it is simple awesum, i have dug a few objects severl feet deep, horseshoe big spike etc i alos dug a hole in excess of 30" to uncover the top of a boiler on a site that was filled in, as for the single coins and smaller items it still picks them up in all metal, you get some different tones that sound like garbage but i have dug up several coins 1-4" with no problem

DTM

[mastereagle22]

I do not own a White's machine but I have been using a 12 inch coil on my machine. I find the 12 inch coil, in an area that is not too trashy, seems to get at least 2 inches deeper. But it really fouls up on large iron shallow targets.

So if you have a semi-clean area I think you would benefit from the 12 inch coil.

[Jim Hemmingway]

Hi Prober,

Can answer your question here. I've got the MXT with both the 6"X 10" DD coil and the new 12" Super concentric coil.

My recently established test plot has pennies buried at no less than 4,6,8, and 10 inches respectively, in soil that ground balances at 83, and has lots of magnetite. Run the kitchen magnet through the soil for a few seconds, it comes up covered in iron filings. Pretty tough ground, but not extreme by any stretch.

The DD coil with full iron discrimination will get the 6 inch penny loud and clear ie. solid, two-way repeatable signal. In zero discrimination it will get the 8 inch penny with the same good signal, but weaker.

The 12" coil with full iron discrimination will get the 8 inch penny loud and clear, as described above. In zero discrimination it will get the 10" penny, just a bit more modulated, but definitely two-way repeatable.

That's the straight of it, I'm a meticulous tester.

Jim.