I have had some people ask me to post photo's of the speakers in my Jango helmet and tell how I did it so, here goes.
Radio Shack black amp
2 PC speakers
9 volt battery
Radio Shack mic Model: 33-3013
black thread and needle
neck seal - from BKBT, no longer made.
I took the RS amp out and put it into a smaller box like you would do for a TK. Then wired up 2 speakers again like you would do for a TK. Then took some window screen, left over from TK as well and made wrapped it around the speakers 2 times. Then sowed them to the bottom of my neck seal.
It is very simple and works well. The best part is that nobody sees it and with the speakers pointing down, the kids can hear you.