My First Outing with the 10"x12" SEF Coil

[Neil in West Jersey]

[video]http://www.youtube.com/watch?v=_3SYXedmxTo[/video]

Coil was smooth as butter in all frequencies. I could not use Transmit Boost without it overloading, but it is not a feature that I have really taken advantage of. Te date is wrong on the captures and titles, it is actually an 1846.

Below is a photo of my finds from the last 36 hours.

 

[Aurium]

Ok Neil, jealousy meter is now pegged. Nice finds, it looks like the new coil is performing very well for you.

 

[Goat Rancher]

Good find Neil. I would say that coil is working pretty well.

 

[Neil in West Jersey]

One of the things I meant to ask Larry when he posted the SEF Field report was my concern with its sensitivity to small targets. I dug a lot of small shot yesterday as well as tiny lead bullet fragments. Some were very deep. The SEF is as sensitive to small targets as the D2 and the Eclipse 950 coil.

 

[Rob (IL)]

Super find Neil. My question is how is the 10x12 better than the D2? More coverage yes, but is it better in any other way? Rob

 

[Larry (IL)]

That was one thing that I did not test on the 8X6 Neil, but I suspect it is as sensitive, if not more so, as it's big brother, the 12X10. True the 12X10 has no trouble finding the little stuff as I found out hunting a Civil War camp this spring.

Nice video and congratulations on the LC.

 

[Neil in West Jersey]

Super find Neil. My question is how is the 10x12 better than the D2? More coverage yes, but is it better in any other way? Rob

Unfortunately I did not make any deep finds yesterday, so I cannot yet make a depth comparison. I did notice that the threshold was much smoother than the D2 at higher gains. I was running in Mixed Mode with the RX Gain at 13, the All Metal at 74, and the Disc at 94 and it ran smooth like butter. No flutter like the stock coil can get, and less falsing when hitting crop stubble. It may be my imagination, but I think pinpointing was a bit easier than the D2 as well.

Hopefully the weather toward the end of the week will allow me to return to a site I am familiar with. After that point I hope to have a better observation on the depth of the coil.

 

[Rob (IL)]

OK, keep me posted on the depth. The D2 runs super for me, I'm just looking to see if more depth is available. Rob

 

[CyberSage]

I used the 10X12 SEF extensively for the better part of a year as I had Whites send me a V-Rated Super12 as a replacement for my 3rd D2 coil. SO the !0X12 Became my main coil. It is extremely sensitive to small targets and goes just a little deeper than the D2, especially in the 2.5 Single frequency mode. This being said, the D2 is much quieter and stable for me in my hunting environment. I have moderately mineralized soil. I figure I give up an inch or so by using the D2 in multi-frequency modes, but the accuracy of the VDI feedback is worth it. When I sent my last D2 coil in for replacement this summer I had no problems adapting to it again. It has a little better separation at depth in my opinion as well. I use the D2 all the time now. I think if Whites could come out with an 11 inch DD coil, it would be just what the doctor ordered. On a side note have you noticed no other company has come out with a V-rated coil. Looks like Whites has closed down the ability to manufacture a third party coil. Monopolies are wonderful, aren't they? :sad:

Jack

 

[Rob (IL)]

I don't believe they have a monopoly or patent on V rated coils. I know one well know maker of coils that I talked to on the phone, said they just were too busy to make them. I don't think you can patent nulling coils to a finer tolerance, but what do I know?

We have been hunting deep old coins many at the detector limits. So even inch is important to me.

.

 

[Neil in West Jersey]

I don't believe they have a monopoly or patent on V rated coils. I know one well know maker of coils that I talked to on the phone, said they just were too busy to make them. I don't think you can patent nulling coils to a finer tolerance, but what do I know?

We have been hunting deep old coins many at the detector limits. So even inch is important to me.

.

 

[leojack]

Hey Neil:just saw that neat video with that new coil.I went with the 8x6 for my high trash,and pre- hunted areas.
Question is: have you had to make any dynamic changes in what appears to be your V3i m/d, to use another coil from a different manufacturer.Some threads discourage the practice of changing manufacturers inre coils.
I was impressed with their field testing of the SEF coils.Your thoughts on their findings would be helpful.......Jack from pa.

 

[Rob (IL)]

??? Jack says the 10x12 is an inch deeper than the D2, Magic says he gets an inch less than the D2. Everyone who had a Whites coil that couldn't do RX15 without overloading wanted a new coil, but are glad to buy a coil that in many cases can't run RX 15??? People complained when a Whites coil didn't give a more accurate depth reading but with the SEF it's OK. Now lets talk VDI accuracy, especially on 22.5 ???

It's cold and I'm ready to hear some reply's. How can Magic and Neil get such varying results, and I know about different ground. Could it be there is that much tolerance between SEF coils? Do you have to roll the dice and see what you get when buying one??

 

[CyberSage]

??? Jack says the 10x12 is an inch deeper than the D2, Magic says he gets an inch less than the D2.:

1. soil
2. swing speed
3. program
4. I am a better detectorist than Magic. Just kidding! your the man Magic...

Everyone who had a Whites coil that couldn't do RX15 without overloading wanted a new coil, but are glad to buy a coil that in many cases can't run RX 15???

There is no comparison on a D2 that has shifted it's null and a working 10X12 SEF coil. The 3 D2 coils that went south on me were noticeably more noisy and unstable (EMI). My 3 year old coin garden showed extreme loss of depth ability after the D2 crapped out. Rob, PM me with your shipping address and I will send you my SEF to play with.

People complained when a Whites coil didn't give a more accurate depth reading but with the SEF it's OK. Now lets talk VDI accuracy, especially on 22.5 ???

I have never had accurate depth readings on the MXT,DFX, or V3 since I very rarely use the 950 coil. You would think that a brand new detector with it's factory issue coil would be a little more accurate. The rush to market did not allow for the software revision to handle this is my guess. I still have a good idea of how deep my target is and consider the V3 to be consistent on the depth feedback. This is all I need. This is history now anyway with the V3i, right? Compensating for the depth inaccuracy of the SEF is not anything I haven't done with any other Whites coil other than the 950. No big deal. As I said, consistency is all that is needed.

It's cold and I'm ready to hear some reply's. How can Magic and Neil get such varying results, and I know about different ground. Could it be there is that much tolerance between SEF coils? Do you have to roll the dice and see what you get when buying one??

The track record to date has shown you have a better chance of getting a good SEF than getting a good D2 coil. I do believe my last D2 coil is far superior to my first 3. I also believe, whiule not as deep as the SEF it is the right all around choice right now for the Spectra/V3/V3i.

Your a trouble maker Rob!

 

[Rob (IL)]

Yes Jack, it is my job.You are right the V3i is very accurate with the Whites coils. Honestly when was the last time a bad D2 as posted on this forum? That problem is solved it seems. I still say, if a D2 won't pass RX15 you get another, with the 10x12 it's not the case. I'm wondering if an 10x12 runs at RX10, how does the noise reading compare to a D2 running at RX10?

I will send a PM.

 

[CyberSage]

I would have to agree. The D2 coil problem is in fact solved in my opinion. It looks like you might be White's biggest problem now.

 

[Neil in West Jersey]

Yes Jack, it is my job.You are right the V3i is very accurate with the Whites coils. Honestly when was the last time a bad D2 as posted on this forum? That problem is solved it seems. I still say, if a D2 won't pass RX15 you get another, with the 10x12 it's not the case. I'm wondering if an 10x12 runs at RX10, how does the noise reading compare to a D2 running at RX10?

I will send a PM.

Like I said in my first post, the SEF had a much smoother threshold than the D2 has. I cannot give an accurate comparison on noise because the site in the video is very far from any sources of EMI. My noise was very low, fairly close to zero. Hopefully this weekend I will get a more accurate comparison in an area I am more familiar with.

 

[Neil in West Jersey]

Hey Neil:just saw that neat video with that new coil.I went with the 8x6 for my high trash,and pre- hunted areas.
Question is: have you had to make any dynamic changes in what appears to be your V3i m/d, to use another coil from a different manufacturer.Some threads discourage the practice of changing manufacturers inre coils.
I was impressed with their field testing of the SEF coils.Your thoughts on their findings would be helpful.......Jack from pa.

.

Hey Jack! Glad you enjoyed the video. I literally unpacked the coil, put it on and ground balanced and it was good to go. I was not sure which coil setting to use, my best guess is the D2 will give the most accurate depth reading. I don't pay too much attention to the actual depth number. 2 inches is shallow, 4-6= moderate, 7-8 = deep, 8+= very deep. I don't think the different coil size settings make much of a difference.

As I said earlier, the only drawback is the fact that the SEF Coil will overload when the Tx Boost is enabled. Once again, this is not a feature I use much.

 

[Aaron]

Thats a beautiful coin there Neil! I got that coil on my SE and its a beast! Gives your shoulder a workout for sure!
Congrats!
Aaron

 

[Neil in West Jersey]

Thats a beautiful coin there Neil! I got that coil on my SE and its a beast! Gives your shoulder a workout for sure!
Congrats!
Aaron

I did not notice any difference when moving from the D2 to the SEF. The V3 is so well balanced I had no arm fatigue after 8 hours of detecting!