That means your probably using it wrong. I know in the beginning I ran it wrong myself. So here it is in layman's terms. If your running all metal and suspect a bottle cap, nail etc. Then you activate the iron audio - it's not going to work right. Why? Because in all metal your iron disc is set at zero. When you activate the iron audio ALL iron is mid tone. Then you'll say - sounds good to me let's dig. To get the iron audio to work you have to run some kind of iron disc.
I haven't found any tiny gold that read below #40. But to be on the safe side I run Pro mode iron disc at #35. Then accept all other targets. You can just make a custom program or alter the all metal mode. Either way it's the same. Now run with the iron audio ON. Why run iron audio on all the time? Because iron audio is more enhanced than with it off. This way on a suspected bottle cap it's already grunting at you without messing with pressing the button.
If your having trouble with figuring out the iron audio. Just set it up and try it this way for a hunt or two. Some say the iron audio is too busy. But I find it a pleasant voice saying - hey I'm on and working.
I know this is nothing the advanced users don't already know. But for new users or the hunters like me that couldn't get their head around this iron audio thing -it may help you?
I haven't found any tiny gold that read below #40. But to be on the safe side I run Pro mode iron disc at #35. Then accept all other targets. You can just make a custom program or alter the all metal mode. Either way it's the same. Now run with the iron audio ON. Why run iron audio on all the time? Because iron audio is more enhanced than with it off. This way on a suspected bottle cap it's already grunting at you without messing with pressing the button.
If your having trouble with figuring out the iron audio. Just set it up and try it this way for a hunt or two. Some say the iron audio is too busy. But I find it a pleasant voice saying - hey I'm on and working.
I know this is nothing the advanced users don't already know. But for new users or the hunters like me that couldn't get their head around this iron audio thing -it may help you?