Specifications

Cobalt muff headsets offer premium quality and features that rate
them world class, with value in mind.
Our signature Cobalt blue “ecto-skin” coating provides a no glare finish with UV
protection, acoustic baffling with a rubber-coat surface that rejects scratches and
scuffs. Premium features include full flex boom, dome PTT (or mic mute) switch,
dome volume control and high efficiency speakers. Each headset comes standard
with comfort-fit foam ear seals, washable cloth ear covers and a mic windscreen.
Various types of noise canceling mic are available as options, including theCobra
technology mic.
Headsets are available in behind-head and over-head support versions as well
as single ear and hard hat slot mount versions. Headset cords for portable radios
or Cobalt fire truck intercoms attach and detach at ear cup for easy change-out.
Headset and cord versions can be used with two-way portable and mobile radios,
intercoms (wired & wireless), as well as cell and wireless phones.
We also offer the BLUE-BT-TOP Bluetooth headset adapter which can convert any
Cobalt headset into wireless with any radio with attached Cobalt BLUE BT adapter
connected to radio audio accessory connector. It also works with most radios and
cell phones with built-in Bluetooth.
As an alternative to our signature premium Cobalt blue muff headsets, we have just
introduced our high quality Value Series headsets, which features over-head,
hard hat slot mount, and listen-only versions.
SIGNATURE HEADSETS
Microphone Specifications:
Sensitivity -35 dBVrms
Impedance 2,200 Ohms
Frequency 50-20,000 Hz
S/N ratio >70 dB
Mono sound
theCOBRA Noise Canceling Microphone
Rated among the best noise canceling microphones, theCobra cartridge can be
added to any Cobalt “blue” headset. For the ultimate headset, add theCobra to
our ANR active noise cancellation optioned headsets.
Dramatic Noise Reduction
TheCobra has an average 10 dB improvement over standard headset mics
with a maximum of 30 db improvement in average speech bandwidth.
The Best Speech Intelligibility
theCobra microphone enables crystal clear speech in 100+ dB noise.
Improves intelligibility scores to 82% in noise levels of 105 dB
compared to 72% intelligibility for standard microphone.
Ideal for high noise environments, theCobra’s
noise rejection performance surpasses all
other microphone technologies, and is
particularly stark in high noise levels.
Noise Rejection takes a new shape
Patented noise cancellation technology rejects
extraneous background noise. An acoustically
based approach; theCobra accentuates the
speaker’s voice by concentrating it on the front port
of a two-port microphone, while deflecting background noise
from the back port.
Passive Noise Canceling Technology
No processor is required, so power requirements are low.
Active noise canceling technology relies on creating an anti-noise signal to cancel out
the noise in a signal. Since there is inherent overlap in frequencies between speech and
noise, this results in speech signals often being identified as noise and vice versa. An
observable consequence of this is distorted or garbled speech, and unsatisfactory noise
cancellation. It also requires a power supply (typically, additional battery). Other
electronic noise-canceling techniques use algorithms to identify a noise from a digital
signal and to filter it out using digital filters. These techniques are also frequency
dependent, which results in the same problems mentioned above.
Available in preamped or non-preamped electret, or dynamic versions.
theBoom-O
theCobra and theBoom are tradenames of Umevoice.
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1.800.264.6021
Using our acoustically based approach,
theCobra accentuates the user’s voice
by concentrating it in the front of the
microphone while deflecting the
voice from the back port. The
background noise is directed
towards both ports to reduce
noise vibration.
Boom-O pictured. Other lightweight
headset models feature theCobra
noise canceling microphone technology
include theBoom-W Bluetooth wireless headset,
-E behind head support with acoustic tube ear
speakers and -BC also behind head support with bone
conduction listen audio. Both the -E and -BC enhance
listening in noisy areas.