Harsh Tone

Loose bolts in the sheet metal mounting area

Tighten the bolts in the sheet metal mounting area.

Low Pitch Moan

Too high of a current

Adjust the horn as necessary.

Weak Tone

Too low of a current

Adjust the horn as necessary.

Weak Strained Tone

Foreign object in the horn

Shake out or remove the foreign object.

Harsh Vibration

Horn contacting with the sheet metal

Bend the bracket in order to give the horn clearance and freedom from the interference.