JLAB Jbuddies Protect Kids Hearing Protection Earmuffs Instructions
- June 9, 2024
- JLab
Table of Contents
JLAB Jbuddies Protect Kids Hearing Protection Earmuffs
Instruction
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FITTING INSTRUCTIONS
- Place the earmuff on the head with the band resting on top of the head.
- Pull out the earcups and place them over your ears so that the ear cushions fit snugly.
- It is important that the cups fully enclose the ears and that the cushions exert equal pressure around the ears.
- Adjust the height of both earcups for comfort and a good seal. Do this by sliding the 4 earcup up or down while holding the headband in place.
NOISE REDUCTION RATING (NRR)
Although hearing protectors can be recommended for protection against the
harmful effects of impulsive noise, the Noise Reduction Rating (NRR) is based
on the attenuation of continuous noise and may not be an accurate indicator of
the protection attainable against impulsive noise such as gunfire.
The level of noise entering a person’s ear, when hearing protector is worn as
directed, is closely approximated by the difference between the A-weighted
environmental noise level and the NRR.
ATTENUATION DATA (ANSI S3.19-1974)
| Frequencies (Hz) | 125 | 250 | 500 | 1000 | 2000 | 3150 | 4000 | 6300 | 8000 | NRR |
|---|---|---|---|---|---|---|---|---|---|---|
| Mean Attenuation (dB) | **** |
13.9
| ****
25.7
| ****
23.7
| ****
33.7
| ****
32.7
| ****
36.7
| ****
38.6
| ****
40.2
| ****
40.7
| ****
23
Standard Deviation (dB)| 2.0| 2.8| 2.8| 1.7| 2.4| 2.4| 2.6| 2.9| 2.4
Example
- The environmental noise level as measured at the ear is 92 dBa.
- The NRR is 23 decibels (dB).
- The level of noise entering the ear is approximately equal to 69 dB(a). Caution
For noisy environments dominated by frequencies below 500 Hz, the C-weighted environmental noise level should be used.
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References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>