ohossack1845
Newbie
Need some recommendations and things to avoid. I have been using passive muff and plugs, but want to take the leap.......
So, uh, that's not really how ear pro works.I have a 400+ pair that I can't adjust for tightness on my head. The Sordin Supreme Pro X is not recommended with eyewear. My $70 Champion set works much better. The highest NRR noise reduction rating is 33 db. Sound over 80 db causes hearing loss, a sound greater than 140 db can cause permanent loss. Some .22 rifles make 140 db reports, high-caliber and pistols generate 175 db. Accounting for average db pistol noise at 175 db, subtracting the highest NRR of 34 from that leaves 141db.
I double up and suggest that you consider fit with the ability to wear eye protection. The
sound in dB - (0.5 * (NRR rating - 7))
. For doubling up/dual protection, the formula for determining the NRR rating is 33 * log10((0.4 * earplug rating) + (0.1 * muff rating))
, though a lot of people just approximate it by taking the higher NRR rated ear pro, and then adding 5 dB of NRR.Thank you for that lesson. My numbers came from 2 sources that I thought were accurate. I read that OSHA 83db for extended periods can cause loss. It seems that I simplified the calculations as you pointed out.So, uh, that's not really how ear pro works.
The 85 dB number from OSHA is talking about permanent hearing loss if that 85 dB is sustained over an entire 8 hour work day. Just throwing that number out as saying that it can cause permanent hearing loss is highly disingenous.
As for a 175 dB noise against ear pro with an NRR of 34 dB, it's ironically actually worse than the 141 dB you incorrectly calculated; it's actually 161.5 dB, as the correct formula issound in dB - (0.5 * (NRR rating - 7))
. For doubling up/dual protection, the formula for determining the NRR rating is33 * log10((0.4 * earplug rating) + (0.1 * muff rating))
, though a lot of people just approximate it by taking the higher NRR rated ear pro, and then adding 5 dB of NRR.
And really, I challenge you to find a handgun that is 175 dB at the ear. Even an unsuppressed MK18 isn't going to be that loud. Beyond that, there's also the question of exactly what wavelength of noise is being rated for NRR is, and the wavelength of a gunshot: https://trevoronthetrigger.wordpres...me-performance-the-misleading-nrr18db-rating/
I'm not trying to be flippant here, I take my hearing very seriously, and I do always double up at the range (even when shooting my suppressed .22 LR). But the numbers can be misleading, and the process for determining the amount of hearing protection offered is not straight forward... which is why I always double up, I guess. Previously used the SureFires using Shure triple flanges or olives paired with Sordin Supreme Pro Xs, then swapping out to using TCI Liberator HPs; now I use the Ops-Core AMPS with the NFMI plugs.
Thank you for those facts. I saw the 171 dB and the rough average for pistols is 161. I will use Ops-Core AMPS with the NFMI's. Playing drums from age 8 to 23 and shooting skeet from 14 to 20 with no hearing protection was stupid of me so I have to be extra careful now.So, uh, that's not really how ear pro works.
The 85 dB number from OSHA is talking about permanent hearing loss if that 85 dB is sustained over an entire 8 hour work day. Just throwing that number out as saying that it can cause permanent hearing loss is highly disingenous.
As for a 175 dB noise against ear pro with an NRR of 34 dB, it's ironically actually worse than the 141 dB you incorrectly calculated; it's actually 161.5 dB, as the correct formula issound in dB - (0.5 * (NRR rating - 7))
. For doubling up/dual protection, the formula for determining the NRR rating is33 * log10((0.4 * earplug rating) + (0.1 * muff rating))
, though a lot of people just approximate it by taking the higher NRR rated ear pro, and then adding 5 dB of NRR.
And really, I challenge you to find a handgun that is 175 dB at the ear. Even an unsuppressed MK18 isn't going to be that loud. Beyond that, there's also the question of exactly what wavelength of noise is being rated for NRR is, and the wavelength of a gunshot: https://trevoronthetrigger.wordpres...me-performance-the-misleading-nrr18db-rating/
I'm not trying to be flippant here, I take my hearing very seriously, and I do always double up at the range (even when shooting my suppressed .22 LR). But the numbers can be misleading, and the process for determining the amount of hearing protection offered is not straight forward... which is why I always double up, I guess. Previously used the SureFires using Shure triple flanges or olives paired with Sordin Supreme Pro Xs, then swapping out to using TCI Liberator HPs; now I use the Ops-Core AMPS with the NFMI plugs.
I really like the use of the NFMI plugs. Gives better protection than the SureFires with the plug out, while still allowing way more situational awareness. FWIW, there's definitely a few discount codes floating around for buying direct from Ops Core, though there will be a bit of wait if you go that route given how they're way behind on orders. PM me if you need a code.Thank you for that lesson. My numbers came from 2 sources that I thought were accurate. I read that OSHA 83db for extended periods can cause loss. It seems that I simplified the calculations as you pointed out.
Thank you for those facts. I saw the 171 dB and the rough average for pistols is 161. I will use Ops-Core AMPS with the NFMI's. Playing drums from age 8 to 23 and shooting skeet from 14 to 20 with no hearing protection was stupid of me so I have to be extra careful now.