I've got dual air horns on my BA, they sound fine.

I got dixieland! (dukes of hazard)

As said earlier in vic they meant to be on a swithc nad not to be used as ya primary horn!

I got d**k for this! My mates thought it was piss funny when the cops played my horn!

The cop d**k me even cracked a smile and couldn't keep a straight face when he was telling me they meant to be on a switch!