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User manual ComMaster CM 9150
Read the manual carefully before using your hearing protection.
ComMaster CM 9150 is an active hearing protection that reproduces surround sounds.
The electronics will dampen sudden impulse sounds and noise to protect your hearing from
harmful sounds. The CM 9150 is tested, approved and CE marked in accordance with applicable
European standards and directives.
Product content
CM 9150 hearing protection, 2 x batteries, this user manual.
Inserting the batteries
The ear muff is powered by 2 x 1.5V AAA (LR03) batteries that are placed under the front cover
of the right cup. To remove the front cover push / slide it gently forward. Insert the batteries into
the holder and ensure that they are secured properly and are correctly oriented. Put back the
front cover and push / slide it gently backwards until it clicks.
Please Note
• It is time to change the batteries when the volume becomes weak or disruptions occur.
• When replacing the batteries the hearing protection shall be turned off.
Using CM 9150
Put the hearing protection over the ears and adjust the height so that the headband is comfortable
on the head. For optimal protection ensure that the cushions are in tight contact around the ears
and not disturbed by hair, glasses or other items.
The headset shall be turned off when placed on the head.
Turn the volume knob to turn on the headset. Adjust the volume to your desired level.
Turn the headset off on the volume knob. Turn until it clicks. Turn off the headset before removing
it from your head.
External audio input jack (3.5 mm)
The left earmuff is equipped with an audio input (3.5 mm) and extra speaker for connection and
audible from a communication radio. The volume is controlled directly from the communication
radio or mp3 player volume control and will work even if the hearing protection is switched off or
the batteries run out.
Please Note
• It is normal to hear a faint click in the hearing protection when you press and release the
transmission key (PTT) on a communication radio.
• Make sure that any communication radio antenna is more than 10 cm from hearing protection
to minimize disruptions.
Important user information
• Hearing protection and cushions may deteriorate with time and should be examined periodically
for cracks or sound leakage.
• We recommend to replace the cushions twice a year to ensure a constant level of attenuation,
hygiene and comfort.
• Clean the hearing protector with a damp cloth. Do not use harsh chemicals or solvents.
Do not immerse the hearing protector in water.
• Use only the original cables that are suited for this hearing protection and your two way radio.
Incorrect wiring can damage the radio or hearing protection and then the warranty expires.
• Remove the batteries when the hearing protector is stored for a longer period to avoid battery
leakage.
Warranty
The warranty period is 24 months, unless otherwise specified, from the date the product was
purchased.
The warranty validity must be supported by an invoice or cash receipt on which / what date of
purchase to be shown.
If errors are discovered during the warranty period, contact your dealer. This warranty does not
cover normal wear or failure due to accident, abnormal usage, neglected maintenance, improper
maintenance, improper voltage, modification, intervention or repair carried out by non-authorized
service center. Warranty is void if failure caused by use of accessories other than original. If the
cash receipt or description of the defect is missing, the product is not under warranty.
Technical data
The ComMaster CM9150™ hearing protector attenuation values and noise levels have been
tested and approved according to EN 352-1: 2002, EN 352-4: 2001 and EN 352-6: 2002. The
attenuation values are given in the table below:
Attenuation values, SNR
Frequency (Hz) 125 250 500 1000 2000 4000 8000
Mean Attenuation (dB) 9,0 12,3 18,4 24,9 30,2 36,6 35,5
Standard deviation (dB) 4,1 3,9 3,1 1,7 3,5 2,1 5,1
Assumed Protection Value (dB) 4,9 8,4 15,3 23,2 26,7 34,5 30,4
H M L SNR
28 dB 18 dB 11 dB 21 dB
Power supply: 2 x 1.5V AAA (LR03) batteries
Operation time: 180 hours
Weight: 320 grams
Designed and developed in Sweden
by Hunter Electronic AB.
BATCH CM91501404
EN 352