There a few settings on the E-Trac that can help you achieve that Sweet Silver Sound your after. Setting the Tones to Multi is a given, but the following adjustments have an effect as well...
1. Tone Variability (30)
2. Tone Limits (29)
3. Threshold Pitch
Here is Angel's notes on the first two settings.
angellionel link=topic=803.msg10291#msg10291 date=1264709498 said:
Tone Variability
This setting, along with Limits, allows the user to fully benefit from the E-Trac's tonal range, making it easier to identify highly conductive targets even among trash. With few exceptions this should be set at or near the maximum setting of 30. My personal preference is 29, though others may like a lower or higher setting.
Tone Limits
Set this to the maximum setting of 30 in order to maximize the tonal difference between targets. When used along with Tone Variability high conductive targets, such as silver, simply 'sing' and will be hard to miss.
Threshold Pitch plays right into the above two settings. I use a setting of 17. The factory default is 15. Next time you get a deep coin try adjusting this setting up or down. You can actually change the pitch of the tonal response in a given range with this setting. As Angel mentioned in his detailed guide to settings for the E-Trac, this setting is one of preference. This is due to the fact that everyone's hearing ability is not the same. Headphones also vary in their response. So the way I have adjusted this setting is quite simple.
1. Bury 3 coins side-by-side at about 5 inches deep. A Clad Dime, a Copper Penny, and a Silver Dime.
2. Move the coil over each coin and note the ID. Hopefully the Silver Dime will come in at 12-45, and the Clad Dime/Copper Penny at 12-44.
3. Now adjust your pitch threshold up or down until That Silver Dime stands out compared to the other 2 coins. Experiment with extreme settings on this to hear what the setting is doing to the tones. Try a setting of 1, then 30. What do you hear? A high Tone Variability setting is critical (30) for this to be noticeable.
For me, and my hearing using the Pro Gold headphones 17 is the magic number. I do really believe a Response setting of Long is important for a better result. Yes, Quarters at shallow depths will sound great as well, but you should be digging those anyway. Good gas money. lol
Jack