[Katana Dave]

Dave, the speaker is slim and I don't have a problem with it in my AGV, it has a small cutaway section near the ear anyway.
I have the wiring under the padding, and passed the speaker thru the hole in the padding where the strap is.
Have trimmed the foam of the helmet near my mouth, so as the mic can sit flush with the helmet. Have not done this on girlfriends helmet or kids, as I move the 2nd unit between these helmets.