The low tone sounds sick and the high tone sounds sick. I have tried about 6 different horns and I'm of the opinion that unless you mount 1 of each, or one of them mini air horns, you will never achieve that "sound" you're looking for...
Sick low = "blap"
Sick high = "beep"
No matter how loud, the sound is the same, blap or beep.
Combine the 2 and you get "HONK!"
