If you use four tone conductive or Combined audio profile, you can assign a tone to each of the Conductive target groups. For example, lets say nickels typically come in at 12/10-14 and silver coins dime sized and larger come in at 12/42-48. Using Combined, if you set the ferrous line at 18, then set the bins up as C0 01 - 14 for bin one, CO 15 - 29 for bin two, CO 30 - 42 for bin three and CO 43 - 50 for bin four, you have established bin one to include nickels and bin four to include silver coins the size of dimes or larger. Now all you have to do is edit the tones (change pitch) to represent the frequencies for the audio response you want. You could assign 1200 Hz to bin one and four, making nickels sould like silver coins. Then you could assign a different tone (change pitch) for bin 2, bin 3 and bin 5 (the ferrous bin). If you set up with four tone conductive, all of the above applies except there is no Ferrous bin five. If you want to make the "bins" more "narrow" so they don't include as many targets, I suppose you could make bin one CO 01 - 09, bin two CO 10-14 (for nickels), bin three CO 15-40 and bin four CO 41-50 (for the silver mentioned above). Then assign the same high tone to bins two and four.
[attachment 246817 fourtoneco.jpg]
Take a look at pages 36 - 38 of the manual for a more thorough explanation of "how" to do edit bins and pitch. HH Randy