I wanted to make a comment on the resulting tones of gold rings and pull tabs. There are many vids on YouTube describing/ showing how pull tabs and gold rings can sound alike, and it appears, even across different machines, they do. I have watched several of these videos as this is demonstrated. However, what I notice is usually the presenter holds the gold ring in his hand and moves it below the center area of the coil and doesn’t pass it over the outer edges of the coil. Or, as in one video, the guy was holding his EQ 600 and passing only the middle of the coil over a gold ring. And of course you can hear the familiar strong mid tone. Now, I used a Vanquish in the past and I now use an EQ 700. I found one 14k gold ring with the Vanquish (I was a beginner and only had it six months) and I've found two gold rings, 18k and 22k respectively, with the EQ 700. The one ring with the Vanquish, the 14k, and one ring with EQ 700, 22k, both had a quick and noticeable high chirp as the edge of the coil passed over them. Otherwise, the rings sounded just like pull tabs. I've also been able to recreate this at home. In one YouTube vid, the guy did actually pass his gold ring across the edge of the coil and I heard the quick, brief high tone. But he didn't seem to notice that his entire bowl of pull tabs didn't do that. So, while it's true that many, many times a gold ring can sound exactly like a pull tab, if you listen carefully you may hear that quick high tone when you're over gold and move your coil's outer edge over the ring. In the vids on YouTube, the guys there aren't moving the gold rings under the entire coil when they do there test and never get that quick high tone as a result. Of course I've learned to dig all pull tabs, but I also listen for that bonus quick high tone that gives me more incentive to keep digging.
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