Thanks for all the good reply's, I asked the question because many years ago an elderly woman in a small town in Southern Missouri stepped off an elevated side walk in front of our dually and 5th wheel. The stock horns did not get her attention, when she finally turned and seen our rig almost on top of her she froze. We somehow missed her as we went by. I will never forget the look on her face! I don't know if louder horns would have helped but don't want to chance another case like that.