I understand and agree with Bob's post above. Some sounds are recorded hotter and therefore don't take as high a setting on the volume to get the desired result. You need to take that into consideration when setting up your presets. All that being said, if you are calling quartering with the wind or full with the wind, coyotes can hear even the lower volume sounds a long way. It is kind of like guys working on a house or barn can easily be heard by humans a half mile or more if the wind is coming from them to you. Keep in mind that a coyote's hearing is at least 7 times better than perfect human hearing, and you get a better grip on how much volume is needed. When it is extremely cold, sound carries better too. I have had coyotes respond without hesitation when calling quartering with the wind, and the ecaller on low volume. When the critter screaming distress sounds weak, it triggers response. Coyotes are quicker to respond when you make it easier for them to taste the wind as they respond.