1dredger Posted December 19, 2006 Report Share Posted December 19, 2006 Way back when I got my GPExtreme I started useing Mono setting While running a DD coil. I have a 20" DD. Would I get more depth out off the GPX4000 in mono or DD with that coil. Any Pros and cons? I belive DD will carry most depth but can't hurt to ask. Quote Link to comment Share on other sites More sharing options...
Admin nuggethunting Posted December 19, 2006 Admin Report Share Posted December 19, 2006 Hello Dredger, I never cared to use a DD in the mono mode. I think this is a big waist of time unless you're pinpointing. Why would anyone want to purchase a DD coil and then only use half the coil in the mono mode? If you want the true benefit of a mono coil, purchase the size you want to use and benefit by using the entire legth/width of the coil for max depth. I think you would get more depth out of you 20-inch coil in the DD mode than using it in the mono mode and only using 1/2 the coil. However, I'm sure some will differ. Take care,Rob Allison Quote Link to comment Share on other sites More sharing options...
1dredger Posted December 19, 2006 Author Report Share Posted December 19, 2006 That is kinda what I thought. The Extreme seemed really good in that mode so I continued using it on the 3500. Trying to get a good start on the GPX4000 Quote Link to comment Share on other sites More sharing options...
montana Posted December 22, 2006 Report Share Posted December 22, 2006 1 dredger. The benefit to using a DD in mono mode is that it still has most of the ground handling ability of the DD mode. It will run quieter on bad ground than a mono coil when in mono mode. It will also be more sensitive to the really small gold but not a lot more. Depth will be sacrificed on the larger deeper nuggets in most cases as Rob says. This may all become a moot point in the future because the GPX 4000 runs quieter with a mono than the previous GPs did with a DD. I still haven't bothered to put a DD coil on the GPX yet. Can't see any reason to. Never liked DD coils anyway and when I did put them on in the past, I used them in mono mode like you did.----Bob Quote Link to comment Share on other sites More sharing options...
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