Birkin S3 ZA. Posted January 23, 2013 Share Posted January 23, 2013 It was the old timer klaxon type I fitted, people burst out laughing when I blow it 😬 Link to comment Share on other sites More sharing options...
TomB Posted January 26, 2013 Share Posted January 26, 2013 I can report the £6.99 horns work well. They sound louder and richer than the original horns, and although Ive only tried it in the garage, the 7 now sounds like a modern tin top in terms of volume. Just a question on the physics of sound - if a pair of horns are rated at 120DB, does that mean they are 60DB each, and if you had four, would it be 240DB? Link to comment Share on other sites More sharing options...
Member Jonathan Kay Posted January 26, 2013 Member Share Posted January 26, 2013 Doubling the number of horns doubles the power. Doubling the power* is a change of 3 dB. Jonathan * Or "power ratio" if you insist. Link to comment Share on other sites More sharing options...
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