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What is the difference in sound from harmonic dampened vs. non-harmonic dampened?

April 26, 2017dampened Harmonic sound vs

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What is the difference in sound from harmonic dampened vs. non-harmonic dampened?

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It can be drastic. Here is a short wave sample comparing the two. The non-harmonic dampened pulley rings VERY loudly, much like a tuning fork due to lacking any dampening. Compare that to tapping our AMS pulley, you can barely even hear anything, all the harmonic & acoustics are absorb by our harmonic damper, thereby protecting your engine from back harmonics. http://www.abedinmotorsports.com/pulley/nonHD-vs-HD.