I'll certainly use the horn when needed. That being said when on the So Cal freeway the other day I used the horn in my recent-to-me '06 Vantage for the first time. It seems quite anemic and was only a single note.
was thinking that it was undersized to pass a European db limit?

Has anyone else noted this and what might you have done?

 

Mine has a regular car sounding horn.
I was expecting a little beep but it's just a regular loud horn. 06 v8v
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You probably lost a note. Believe it or not it's probably the least expensive item from AM. And you can probably change it yourself with 2 basic tools.