Multitech w/Autocomm headset

Wolfhound · Jan 17, 2008

Has anyone mounted a mic in the chin piece ? Thinking about cutting away the mic stiffener & just using the wires. Probably put the din connector wire between the outer & inner shell on left side. I'd sure like to see what others have done to mount mic & especially the main din wire. Any pics (finished ) or pointers before I screw the big buck lid ? Searched for a good install all over the net (yes, the google way) & haven't found what I'm looking for. :read:

Good2Go · Jan 18, 2008

Yo Robert...

I've mounted an Edsets button mic in the chinbar of the older Syncrotech helmet by taking the the chinbar lining apart, cutting away enough foam to recess the mic, then drilling holes to make a "speaker grill" in the chinbar lining. Came out looking nice, but I didn't like this solution 'cause if forced me to have the chinbar down to talk on the phone.

One of these days, when the weather in these parts gets too shitty to ride

, I'm going to do my multitech, but use a boom mic, so I can talk on the phone at gas/rest stops etc. with the chinbar up.

Also, in case you hadn't seen this on the Autocomm site , it might help.

Wolfhound · Jan 18, 2008

Thanks 'Nut. It was nice briefly meeting you on New Years before the ride. Yes, I've seen the Multitech instructions but they don't show anchoring din cable. It talks about pulling the lining clip out and I"m not seeing anything with a clip. There's already a small indention where a mic could go & the small AC mic will work fine for me there. Taking the helmet off is the norm for me at rest breaks , but do want to use the phone while riding. I'm coming from a RF1000 that I didn't like the way I attached the din cable. Looks like they just pushed it up between outer/inner shell. I hope that crushes down the inner so it won't cause pressure on that side while wearing. I know I'm waaay overthinking this . . . .

Finished with din cable install (5 min) & now working on chin mic (As time permits).

SPORT · Jan 26, 2008

FJRobert said:
Thanks 'Nut. It was nice briefly meeting you on New Years before the ride. Yes, I've seen the Multitech instructions but they don't show anchoring din cable. It talks about pulling the lining clip out and I"m not seeing anything with a clip. There's already a small indention where a mic could go & the small AC mic will work fine for me there. Taking the helmet off is the norm for me at rest breaks , but do want to use the phone while riding. I'm coming from a RF1000 that I didn't like the way I attached the din cable. Looks like they just pushed it up between outer/inner shell. I hope that crushes down the inner so it won't cause pressure on that side while wearing. I know I'm waaay overthinking this . . . .
Finished with din cable install (5 min) & now working on chin mic (As time permits).

FJRobert,

I'm looking to purchase a Multitec helmet (Shoei) and have the same question. I use the AVI Autocom system. Their site states my mic can be used on modular helmets. I too am not sure if the mic should be mounted on the face shield or to the main helmet next to the cheek.

Let me know what you find. If, or when I get my helmet (hopefully in the next week or two) I'll touch base with you and see if we can learn from each other.

EffBee · Jan 26, 2008

To get the best possible voice transmission and clear sound with the least external interference, your Autocom microphone needs to rest ON your lips, just like those mics used by fighter pilots. Removing the wire stiffeners and attaching it to your chinbar will likely not produce the best results. Also, you will have to consider what the repetitive motion of raising and lowering the chinbar will eventually do to the mic wires, which were not designed for that type of use.

Mount the mic to the main part of the helmet, between the helmet shell and the next interior layer. This will provide the mose secure mounting, with the greatest flexibility, and still allow you to use the Autocom system even with the chinbar raised.

SPORT · Jan 26, 2008

EffBee said:
To get the best possible voice transmission and clear sound with the least external interference, your Autocom microphone needs to rest ON your lips, just like those mics used by fighter pilots. Removing the wire stiffeners and attaching it to your chinbar will likely not produce the best results. Also, you will have to consider what the repetitive motion of raising and lowering the chinbar will eventually do to the mic wires, which were not designed for that type of use.
Mount the mic to the main part of the helmet, between the helmet shell and the next interior layer. This will provide the mose secure mounting, with the greatest flexibility, and still allow you to use the Autocom system even with the chinbar raised.

For the most part I agree. However, Autocom's manual has you velcro the mic to the chinbar. This, for most of us, leaves a 2"+ space between your lips and the mic. I personally haven't had a problem with this type of mounting.

With a Modular, I am thinking the same with regards to mounting the boom underneath the cheak pad. However, the thought is if it were mounted on the chinbar, excess wire (an inch or two) would serve to compensate for the relative motion between the shell and the chin bar. The mic boom would reach fairly close to the chin bar focal point (hinge) and the excess wire would allow the boom and mic to remain stationary on the chin bar. If done correctly it would minimize any stress on the wiring.

Wolfhound · Jan 26, 2008

MultiTech helmets have a very close fitting chin. My mic is about 3/8 inch from mouth IIRC & I can touch it with my mouth if necessary, works excellent. I removed (cut) the stiffener wire from mic. removed 3 screws(1 behind rubber where mic goes) & inner chin piece comes out, drilled small hole to pass cable thru, reassembled. Added flexible wire sheath, velcro behind mic.

Picture 2 shows where I haven't anchored the mic cable yet . . .

SPORT · Jan 26, 2008

FJRobert,

Your work looks clean!

What did you use to protect the exposed mic wire between the shell and chin bar? Do you forsee any complications with the mic wire catching, binding or causing problems?

I anchored the DIN cable to the very back of the helmet. On my KBC I cut a small hole in the material, then pulled that material back a bit and drilled a hole in the foam. I then threaded the DIN cable through the helmet material and pressed the cable up into ithe foam with a tight friction fit. Been there two years with no problems.

Wolfhound · Jan 26, 2008

I didn't see a need to protect the mic wires (1 double wire)that are between the shell & inner chin lining, they can't move, I may be wrong but don't see it.

Being my first flip up I have no experience with wires pinching etc in the long run. Once I anchor the wire exiting the chin piece at the proper angle I'll know more but so far it works fine. A lot of others here run flip ups & know much more than I...

SPORT · Feb 1, 2008

How'd you run the speaker wires? It seems these Multitec's are built with very close tolerences; thus making it a challenge to run the wires between the out shell and the foam liner.

Any more pics?

Wolfhound · Feb 1, 2008

I've never had much luck being able to hear speakers well so I don't install them. I use custom made earbuds. In the pic with mic you can see the box the earbuds plug into.

Here's a link to Autocomms Multitech install:

https://www.autocomamerica.com/files/Fit_In...ns_Multitec.pdf

Multitech w/Autocomm headset

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