Surefire EP10 Sonic Defenders Ultra Max Manual

EP10 Sonic Defenders

Protection Against Two Types of Noise

Full-block EP10 Sonic Defenders Ultra Max provide protection against two
types of noise: continuous noise (example: loud roar of an engine) and
impulse noise (example: gunshot). They feature memory-foam Comply
Canal Tips for all-day comfort and a near-custom fit that provides the
highest level of hearing protection of any Sonic Defenders earplug.

NOISE ATTENUATION DATA

NOISE REDUCTION RATING (NRR)
EP10 Sonic Defenders Ultra Max
125 250 500 1000
Test Frequencies (Hz)
31.1 30.6 38.1 36.9
Mean Attenuation (dB)
5.0 3.8 4.1 3.0
Standard Deviation (dB)
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. EP10 Sonic Defenders Ultra Max fit most people; however, no hearing
protection fits everyone. If proper fit cannot be achieved following instructions, discontinue
use. Foam-tipped EP10s should NOT be worn for swimming. For swimming use, we
recommend polymer flange-stemmed Sonic Defenders models.

IMPULSE NOISE DATA

EP10 Impulse Noise Reduction
48
47
46
45
44
43
42
41
132 150 168
IMPULSE NOISE LEVEL (dB)
®
2000 3150 4000 6300 8000
NRR
38.8 40.8 39.3 42.9 45.1
30
2.1 3.7 3.2 3.3 3.0
Average Peak Impulse Level
132 dB Overall Average PIL
150 dB Overall Average PIL
168 dB Overall Average PIL
ANSI S12.42-2010
Ultra Max
FITTING & TESTING
™
1. Roll Comply
™
ring) into a thin, round cylinder, being careful not to unscrew tip from stem.
2. Starting with the EarLock
30
(when used as directed) the earplug forward while inserting the foam tip deep into the right ear
canal. Fit the retention ring to the natural contour of the concha bowl
EP10 Sonic Defenders ® Ultra Max
surrounding the ear canal to lock the earplug in place. Hold in place 15 -
30 seconds while foam tip fully expands in ear canal.
3. Repeat process with left earplug (marked with an L on the retention ring)
for left ear.
4. Test by clapping. If no noticeable decrease in volume, reinsert and retest.
5. Slowly twist the earplug when removing to break the stem's seal.
WARNING: If the instructions above are not adhered to, the protection afforded by EP10
Sonic Defenders Ultra Max will be severely impaired.

CONNECTING/DISCONNECTING LANYARD

Remove twist tie and uncoil lanyard.
Insert lanyard ends into small holes
dB Reduction
on the outside of EP10 retention
43.3
rings, located beneath the stem
46.8
ends, and push in until lanyard
45.9
ends snap in place. To remove,
pull gently on lanyard ends until
they disconnect from earplugs.
Canal Tip of right EP10 (marked with an R on the retention
retention ring oriented slightly backward, rotate
®
HEARING PROTECTION
HEARING PROTECTION