become too loud for some people. Bose
revolutionized flying when it introduced that Quiet Comfort headsets that
electronically made signals which canceled out certain sounds like the rumble
of the plane's engine. The Bose headsets
spawned copycats and created a whole new industry as well as inspiring headset
makers to create all kinds of new technology to cancel noise. However, the cost
of buying into the Bose fraternity is not cheap, $300 and not easily available to
those who are not frequent business class flyers.
are fairly cheap, but they can also push wax back into the ears, and in warmer
climates ear muffs ar
Auditory research authority, Dr. Jozef
Zwislocki, Professor Emeritus at
technology, after years of research and development. Basically, ZEM directs sound away from the
ears and sonically sealed chambers act as an extension of the ear canal which form
a vacuum that pulls harmful sounds away the ears. Proprietary sound dampening material inside
the chamber filters and cancels sound waves.
The result of this fine technology is excellent noise reduction that does not need
batteries and works great. We tested the SensGard ZEM Hearing Protection
31DB Rated (MSRP $31.95) and were amazed. The sound reduction effect appeared almost as efficient as Bose and also cut
out other frequencies such as high pitched machinery. The ZEMS are not as comfortable as the Bose and if you are wearing them you can not listen to music at the same time.
In our unscientific volume tests, the noise
reduction was between 15 and 20 numbers on the TV volume. It cut out the sound of helicopters overhead,
fans, the refrigerator, the computer fan, rumbling old car noise on the street
and freeway buzz. In comparison to The
Thunder 29 by Howard Leight (MSRP $29.99), a heavy duty plastic ear protection muff that just
muffles noise, the noise reduction of ZEM Hearing Protection was superior and it was
not as heavy on the head.
Besides the obvious price difference, an advantage ZEM has
over electronic noise canceling is that there is no humming or hissing noise
heard and because it is not electronic it can be exposed to moisture and extreme weather conditions. There are few minor drawbacks, while
wearing ZEM if you knock or hit it, the
knock sound sound is not dampened and it can be a
little disconcerting. Also, when
ZEM was worn on the top of the head of petitie person, bending over to get something off the bottom
shelf, it caused the ZEM to fall down over her face. To divert if from falling down, ZEM
can be worn over the back of the neck.[Sensgard is working on the problem and testing a foam strip under the headband. We tried it out and it didn't flop over any more.] ZEMs
are great for mowing the lawn, over zealous music at the gym, machinery operations, factories, loud
events, and most likely airplanes (we had no flights scheduled in time for this
review.)
Robert DiNardo at Sensgard, told us that he's seem instances in factories where staff are plagued with ear infections because the staff places earplugs in their ears with dirty fingers, point out that because ZEM rest outside the ear, it is more hygienic. We noticed that human voices could be easily heard with ZEMs to which DiNardo explained that the attenuation is slightly less in the vocal ranges. So although ZEM will cut out some of that annoying cell phone conversation next to you, you will still be able to understand what they are saying. The dangerous very high and low frequencies will be barely noticeable. We've found that hearing of sound is very subjective, therefore, we suggest that if you need hearing protection, you try out Sensgard ZEM Hearing Protection to see if it works for you. We believe that you will be pleasantly surprised while enjoying a new sense of peace
SensGard - ZEM - 31* |
|
Frequency |
Attenuation |
125Hz |
42.0dB |
250Hz |
42.0dB |
500Hz |
36.0dB |
1000Hz |
37.0dB |
1500Hz |
38.0dB |
2000Hz |
38.0dB |
31000Hz |
42.0dB |
4000Hz |
44.0dB |
6000Hz |
40.0dB |
8000Hz |
40.0dB |
* Data generated by
I own a pair of Zem. I agree with your review. I like how well Zem works for me as far as hearing protection goes, however, I have one thing to add about discomfort. Being a medium-sized female, I'd say that the earbuds of Zem are NOT designed for female in general. They are too large to be comfortable. Because of this drawback, I can not wear it for more than 30 minutes. Actually, even after no mre than a few minues I can feel the muscles in/around my outer ears begin to sore. 30 minutes is the maximum time I can handle the soreness.
I wish they would make different sized ear buds suitable for women and even children. Maybe even make the earbuds interchangable screw-ons of various sizes... is this a patent coming ;-).