Installation into a 3/4-style Helmet
1. Begin by examining the ear pocket area in your hel-
met. Make sure that there is sufficient room to mount
the speaker in the ear pocket. If you will be mounting
the J&M DynaPort
®
speakers also make sure that you
can position the porting tube down along the seam in
the cheek pad.
See Figure 1
. (It is important to have
the helmet fit and feel the same after the speakers
are mounted as it did before the headset was
installed.) The porting tube should be positioned to
allow the sound pressure from this tube to be direct-
ed out of the ear pocket. This will help enhance bass
response.
Some three-quarter style helmets, Shoei and HJC,
for example, have ear pockets that are a bit too small
for the speaker to be properly placed. In this case fold
out the interior lining and with an Exacto
®
knife care-
fully remove a very thin "half moon" of polystyrene to
allow the speaker to be positioned slightly higher and
deeper into the ear pocket.
See Figures 3 and 4.
This
should keep the speaker from contacting your ears.
Be careful to remove only the minimum amount nec-
essary, no more than 1/4 of an inch.
Once you have made room for and/or positioned
the speakers, remove them.
2. Clean the bottom of each ear pocket with a cloth
dampened with alcohol. Peel the backing from the
supplied Velcro
®
pads and press them into the bottom
of each ear pocket.
3. Position the boom microphone/amplifier clamp
assembly on the left side of the helmet so that the
microphone lines up with the wearer’s mouth. Mark
this position.
See Figure 2.
Tighten the clamp to the helmet with the rubber fric-
tion spacer in place.
4. Position the speakers in their proper place in the
ear pockets and press them firmly onto the Velcro
®
pads.
5. Pull the large or small wind sock (which-ever you
prefer) over the microphone.
6. Using the enclosed wooden tool, carefully push the
speaker wires into the gap between the helmet liner
and shell.
See Figure 6.
J&M Bluetooth Helmet Headset Installation Instructions
WARNING!
Helmet speakers may not be legal in all jurisdictions. Check your local laws BEFORE using this product. J & M Corporation cannot control the circumstances surrounding the sale of this equip-
ment, the quality of installation, or the specific helmet into which this equipment is installed. Accordingly, J & M Corporation makes no warranties, expressed or implied, related thereto. A helmet with this
equipment installed may not protect the user from injury. The user assumes all liability in conjunction with accidents, injuries or losses of any kind arising out of the use of this product. Additionally, this
product should not be used in any way that would impair the user’s ability to hear traffic or other noises. Accordingly, the volume should be kept low or off, depending upon the circumstances.
6B. Installation Instructions
For 3/4 Style Helmets
1
Figure
2
Figure
3
Figure
5
Figure
6
Figure
4
Figure
Notes:
When using your intercom system, regardless of headset brand or type, it is important to turn the intercom volume level
high enough for comfortable conversation, but not any higher. Unnecessarily high intercom volume levels will only increase the
unwanted wind and background noise you may experience.
Rubber Friction Spacer
