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SHUSH. . . HERE COMES PERKINS • Some noisy gremlins

3rd August 1989, Page 22
3rd August 1989
Page 22
Page 22, 3rd August 1989 — SHUSH. . . HERE COMES PERKINS • Some noisy gremlins
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Which of the following most accurately describes the problem?

crept Into your piece about Peter Bottomley enjoying the quiet life with Perkins (CM 20-26 July).

The noise reduction numbers you gave for the ultra-quiet QHV90 engine were correct but were, of course, for the bare engine and not "pass by". In fact, the pass-by level went down from 84.9dB(A) to 76.6d3(A) — not the sort of performance we want to keep quiet about!

Tony Downs,

Director and general manager, Perkins Engines, Peterborough