Singing lesson

Wheels (Australia) - - First Drives - OR TRY THESE...

To give the Han­dling Spe­ciale its unique sound, Fer­rari de­vel­oped new rear boxes for the ex­haust, in­cor­po­rat­ing sep­a­rate chambers that work as what are called Helmholtz res­onators. Ba­si­cally this is the prin­ci­ple of mak­ing air res­onate in a cav­ity to pro­duce cer­tain sound fre­quen­cies – the same idea as blow­ing across the top of a bot­tle. The HS has a switch­able valve to di­rect ex­haust flow into the box at mid and high revs, where it cre­ates more noise de­spite the muf­fling ef­fects of the tur­bocharg­ers up­stream.

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