Safety Precautions
Important Information on Safe and Efficient Operation.
Read this Information Before Using your Headset.
- Listening to music or any other sound at a high
volume over time can cause permanent damage to
your hearing. Noise-induced hearing loss can occur
even when you are enjoying music on a personal
listening device. The user is responsible for proper
selection, use, care and maintenance of this device.
Improper selection use or maintenance may lead to
serious hearing loss.
- The output of the level dependent circuit of this
headset may exceed the external sound level.
- Improper fit of this device will reduce its
effectiveness in lessening noise. Although hearing
protectors can be recommended for protection
against the harmful effects of impulse noise, the
Noise Reduction Rating (NRR) is based on the
attenuation of continuous noise and may not be an
accurate indicator of the protection attainable
against impulse noise such as gunfire. Constant or
repetitive exposure to impulse noise may lead to
serious injury, including temporary or permanent
deafness.
Product At-A-Glance
1. Cable assembly with PTT microphone for Motorola
2-way radio
2. Cable assembly for audio device
3. Headband
4. Height adjustment slider
5. Ear cushion
6. Ear cup
7. Audio input jack
Getting Started
Your Motorola MHP61 provides all day comfort and
protection against moderate to loud sounds generated
by machines, gunfire and other noise sources. Proper
use and care of the MHP61 is essential for your hearing
safety and comfort. Please read and comply with the
following instructions:
Fitting the headset
Adjust the height adjustment sliders downward from the
top to an appropriate position based on your head size.
Move the cups up and down until the cups are secured
over the ear. For best results, remove all hair from under
the cushion. Noise reduction will be adversely affected
by anything that impairs the seal of the earmuff cushions
against the head such as glasses or a hat. Height
Adjustment Sliders should be evenly extended from the
headband.
Placing the ear cups over each ear
The input jacks can face either forward or backward,
depending on how you intend to drape the cable
assembly when connecting to an audio or 2-way radio
device..
Removing and replacing damaged or worn-out ear seals
1. Hold the cup in one hand and place the fingers of the
other hand underneath the hard plastic ear seal
flange.
2. The ear seal and flange will snap off of the cup with
moderate force.
3. Put the new ear seal over the cup and snap into
place.
Removing and replacing worn-out headbands
1. Hold one ear cup firmly in place with one hand.
2. Use your other hand to slide each pivot pin of the
yoke out of the cup’s rubber socket. A slight rotation
of the cup will help release the pin from the rubber
socket.
3. Repeat 1 and 2 above to remove the other cup.
4. Hold one ear cup firmly in place with one hand.
5. Rotate and press the ends of the yoke pins of the new
headband into the 2 rubber sockets located on the
ear cup.
Connecting your audio player to your headset
1. Locate the cable assembly with the 3.5 mm plug at
the end.
2. With your headset off, plug the white and red 2.5 mm
connectors into the jacks on each cup. The headset
has no front or back. You should ensure that the left
and right connectors are plugged into the accessory
jack that matches your preferred way of wearing the
headset.
3. With your player off, plug the headset’s single
connector into the player’s accessory jack.
4. Turn the music player on and adjust volume to a
comfortable listening level.
Continued on back
MHP61
The NRR calculated from these laboratory-based
attenuation data is 21. Improper fit of this device will
reduce its effectiveness in attenuating noise. Consult
instructions for use for proper fit.
The level of noise entering a person’s ears when a
hearing protector is worn as directed is closely
approximated by the difference between the
A-weighted environmental noise level and the NRR.
EXAMPLE:
1. The environmental noise level as measured at the
ear is 92 dBA.
2. The NRR is 25 decibels. (dB)
3. The level of noise entering the ear is approximately
equal to 67 dBA.
CAUTION: For noise environments dominated by
frequencies below 500 Hz, the C-weighted
environmental noise level should be used. Earmuffs
must be worn at all times in noisy surroundings for
proper protection. Although hearing protectors can be
recommended for protection against the harmful
effects of impulsive noise, the noise reduction rating
(NRR) is based on the attenuation of continuous noise
and may not be an accurate indicator of the protection
attainable against impulsive noise such as gunfire.
The EPA has selected the NRR as the measure of a
hearing protector’s noise reducing capabilities. Giant
International and Motorola make no warranties as to
the suitability of the NRR as a measure of actual
workplace protection since such protection is highly
dependent on user training, motivation, and utilization.
A better estimate of workplace protection can be
obtained by derating the labeled NRR of this, or any
other hearing protector, by 50%.
Connecting your Motorola Talkabout® 2-Way radio to
your headset
1. Locate the cable assembly with PTT microphone and
all black 2.5 mm connectors.
2. With your headset off, plug the black/red connectors
into the jacks on each cup. The headset has no front
or back. The 2-Way radio is monophonic, and the left
and right connectors can be plugged into either cup.
3. With your 2-way radio off, plug the 2.5 mm connector
into the radio’s accessory jack.
4. Turn the radio on and adjust the volume to a
comfortable listening level.
5. Hold the PTT microphone 2.5 cm from the mouth for
best audio clarity.
6. To transmit, press the PTT (Push-To-Talk) button. To
receive, release the button.
IMPORTANT USER INSTRUCTIONS
1. The earmuffs should be regularly inspected for
serviceability.
2. If you encounter excessive crackling or distortion in
the speakers, contact the manufacturer calling the
number in the warranty section of this user guide.
3. Inspect the ear cushions for cracks or hard spots or
separation from the cups. Replace damaged or
worn-out ear seals.
4. After extended use, clean/disinfect ear seals with a
soft cloth and warm soapy water. DO NOT SUBMERSE
EARMUFFS IN WATER! Store in a cool, dry place. The
ambient temperature for storage should not exceed 55
degrees C (130 degrees F).
5. The earmuff is equipped with an electrical audio input
jack. The user should check for proper operation
before use.
6. Two separate cord assembly cables are included. One
cable has a 2.5 mm connector and an in-line
microphone for use with your Motorola Talkabout
®
FRS/GMRS two-way radio. The second cable has
3.5 mm connector for use with other input devices.
Sound Attenuation Data for Hearing Protectors in the
USA. (ANSIS3.19-1974)
Tested and approved in accordance with ANSI S3 19:
1974 at Michaels & Associates, Inc. (in passive mode
with electronics off).
Sound Attenuation Data for Hearing Protectors in
Canada.
Source: CSA Standard Z94.2-02
The MHP61 is rated CSA Class B.
Model MHP61
ISOLATION EARMUFF
User Guide
MPH-UM-61A
For More Information
For further information, you may call
Motorola Solutions, Inc.
at 1-800-638-5119 (U.S. and Canada),
e-mail us at [email protected] or visit us on the
Internet at motorolasolutions.com/talkabout.
Frequency, Hz
Minimum attenuation, dB
Class A
Class B
Class C
125
10
5
None
250
18
12
None
500
26
16
None
1000
31
21
11
1000
31
23
13
3150
33
23
13
4000
31
21
11
6300
33
23
13
8000
33
23
13
