I have speakers in my helmet to listen to music while riding. Coming home from church on Sunday the sound kept cutting out. I found the wire to be worn probably from wind. So I got on line and to my dismay no one sells the small good old Sony type headsets with the speakers the size of a quarter or so.
So, I ordered these. Five or six times the size of my old ones.

I pressed the order button and an hour later they were at my door. Wow!
I had to dismantle the helmet and cut huge holes in the ear pieces but I made those monsters fit. It’s even better than the small little ones that can move around in their little pouch. These things are planted and the sound is tremendous.
Two hours from Houston we have a problem to fully upgraded sound system. That doesn’t always happen.