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Drizzt321
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Jan 15, 2020
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For future reference, the frequency spectrum attenuation for the Orange (Rock Protection) listed on the package is as below. H: 27dB, H: 22dB, L: 19dB. Hz     dB 63     16.3 125    17.9 250    19.7 500    21.9 1000   24.6 4000  30.7 8000  32.1
Jan 15, 2020
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