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HEARING PROTECTION

HEARING PROTECTION

EP5 Sonic Defenders

® 

Max

Protection Against Two Types of Noise

Full-block EP5 Sonic Defenders 

Max provide protection against two types of 

noise: continuous noise (example: loud roar of an engine) and impulse noise 

(example: gunshot).

NOISE ATTENUATION DATA

WARNING:

 

Improper fit of this device will reduce its effectiveness in attenuating noise. 

Follow instructions for proper fit. Failure to follow instructions could result in hearing loss 

and/or injury. EP5 Sonic Defenders 

Max fit most people; however, no hearing protection 

fits everyone. If proper fit cannot be achieved following instructions, discontinue use.

NOISE REDUCTION RATING (NRR)

26

NRR

Test Frequencies (Hz)
Mean Attenuation (dB)
Standard Deviation (dB)

125

32.8

4.3

250

33.3

4.5

500

35.4

5.2

1000

32.8

3.6

2000

37.8

4.5

3150

39.3

3.8

4000

39.7

4.9

8000

46.0

3.6

6300

46.0

5.1

EP5 Sonic Defenders

®

 Max

(when used as directed)

EP5 Sonic Defenders Max

ANSI S12.42-2010

IMPULSE NOISE LEVEL (dB)

132 dB Overall Average PIL
150 dB Overall Average PIL
168 dB Overall Average PIL

36.2
42.4
42.9

Average Peak Impulse Level

dB Reduction

IMPULSE NOISE DATA

NOISE REDUC

TION (

dB)

EP5 Impulse Noise Reduction

45
40
35
30
25
20

15
10

5
0

 

132 

            150

 

                       

168

1. Starting with the EarLock

®

 retention ring oriented slightly backward,  

  rotate the earplug forward while inserting the stem of the right EP5  

  (marked with an 

R

 on the retention ring) into the right ear canal deep  

  enough for the uppermost flange to seal. Fit the retention ring to the  

  natural contour of the concha bowl surrounding the ear canal to lock 

  the earplug in place.

2. Repeat process with left earplug (marked with an 

L

 on the retention ring) 

  for left ear.

3. Test by clapping. If no noticeable decrease in volume, reinsert and retest.

4. Slowly twist the earplug when removing to break the stem’s seal.

FITTING & TESTING

WARNING:

 

If the instructions above are not adhered to, the protection afforded 

by EP5 Sonic Defenders 

Max will be severely impaired.

STEM ADJUSTMENT

EP5 Sonic Defenders

®

 

Max feature adjustable stems to maximize fit and 

comfort. To adjust stem, with earplug removed from ear, pull out or push in 

stem to lengthen or shorten for comfort.

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