I'm a little confussed
Acording to the quote below by moderator hso, if I get earplugs rated at NRR 33 coupled with my NRR 22 mufs this should give me 38 NRR.
If I had got mufs with a NRR 35 coupled with earplugs rated at NRR 33 would I have had more or the same amount of protection??
http://www.thehighroad.org/showthread.php?t=220715
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If a pair of muffs have an NRR of 33 and the noise you're exposed to is 140 dB then the muffs soak up 33 dB of the 140 dB. This leaves 110 dB to get through to your ears. Add plugs to the muffs and you get anohter 5 dB protection added to the higher of the two. NRR 30 plugs + NRR 20 muffs = NRR 35 combined. NRR 30 plugs + NRR 30 muffs still equals NRR 35 due to the different frequencies the muffs and plugs absorb.
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Acording to the quote below by moderator hso, if I get earplugs rated at NRR 33 coupled with my NRR 22 mufs this should give me 38 NRR.
If I had got mufs with a NRR 35 coupled with earplugs rated at NRR 33 would I have had more or the same amount of protection??
http://www.thehighroad.org/showthread.php?t=220715
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If a pair of muffs have an NRR of 33 and the noise you're exposed to is 140 dB then the muffs soak up 33 dB of the 140 dB. This leaves 110 dB to get through to your ears. Add plugs to the muffs and you get anohter 5 dB protection added to the higher of the two. NRR 30 plugs + NRR 20 muffs = NRR 35 combined. NRR 30 plugs + NRR 30 muffs still equals NRR 35 due to the different frequencies the muffs and plugs absorb.
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