Hey there. Do you change (slow down) your sweep speed when you use a coil 12" or larger? Ive been experimenting with mixed results and I'd like to know your thoughts. Im used to going low and slow with my Sovereign GT but the DFX is a different beast. I know I can adjust sweep speed. Im thinking slower is deeper. Thanks for reading. HH. Matt
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Low and slow for coil 12"+?
- Thread starter matthias
- Start date
TerraDigger
New member
Slower works better for me, but thats with a normal/smaller size coil. I would think that being a 12+ inch coil, fast sweeping would be more detrimental than beneficial. Due to it's potential to having more targets under the coil, in normal detecting conditions. With the first generation motion detectors from White's many years ago a faster/whipping sweep speed got one more depth. In today's machines, little to nothing is gained by that technique, as a 'fast/whipping' sweep is not required to get depth.
Hey there! I was looking for opinions from all White's users. 
Makes sense to me to slow down with a larger coil but I have also found that sometimes a speedy coil sweep equals more depth. Just looking for opinions and experiences from the White's users in general. Thanks. HH. Matt
Makes sense to me to slow down with a larger coil but I have also found that sometimes a speedy coil sweep equals more depth. Just looking for opinions and experiences from the White's users in general. Thanks. HH. Mattthe size of the search coil. Naturally, you can't forget to factor in the number oi targets at a site, but that can also be influenced by some settings.
In general, if you use a smaller-than-stock search coil you will be working against yourself to try using a faster sweep speed. Basically, a fast sweep covers more ground and that pushes too much ground signal into the detector using a smaller coil for it to process and filter to pass along a target signal.
Allowing for that theory, a larger-than-stock coil might be able to be swept slightly faster ... slightly ... than a typically stock search coil. The problems come when you are hunting a site that has a lot of challenging ground conditions, such as rocks, dirt clods, pea gravel, etc., etc., as well as any site that has abundant target. Too many targets, accepted or rejected, are going to impact performance, especially separation when closely spaced and detract from better detection depth.
Other than the search coil you need to consider the settings used. Too often, people use as higher Disc. setting because they don't want junk. Well, they might not dig it because the ave ignored hearing it, but the trash is still there, and if so, it will cut in on performance with any search coil, and the larger the coil the bigger the problem of hearing good targets between trash. Due to this, a slower sweep speed might help with performance using a larger-than-stock coil (I refer to larger than the typical 9
In general, if you use a smaller-than-stock search coil you will be working against yourself to try using a faster sweep speed. Basically, a fast sweep covers more ground and that pushes too much ground signal into the detector using a smaller coil for it to process and filter to pass along a target signal.
Allowing for that theory, a larger-than-stock coil might be able to be swept slightly faster ... slightly ... than a typically stock search coil. The problems come when you are hunting a site that has a lot of challenging ground conditions, such as rocks, dirt clods, pea gravel, etc., etc., as well as any site that has abundant target. Too many targets, accepted or rejected, are going to impact performance, especially separation when closely spaced and detract from better detection depth.
Other than the search coil you need to consider the settings used. Too often, people use as higher Disc. setting because they don't want junk. Well, they might not dig it because the ave ignored hearing it, but the trash is still there, and if so, it will cut in on performance with any search coil, and the larger the coil the bigger the problem of hearing good targets between trash. Due to this, a slower sweep speed might help with performance using a larger-than-stock coil (I refer to larger than the typical 9
Today I used the Detech 13" DD coil on my DFX and swept the coil so slow its like the coil was stopped. I could not have moved the coil any slower. The result was a 1918 Wheat cent, 7" down and in a part of my detecting spot Ive never found anything. Hard packed and rock infested conditions. Took me close to 20 minutes to get that Wheat. Thanks for reading. HH. Matt