Have you ever wanted to have the option of both helmet speakers and in ear headphones on the same SMH10 clamp? For longer rides I like to use earphones but around town I prefer the simplicity of speakers. I found this guide on modifying the SMH10 clamp unit so that when you plug in earphones the speakers cut out. I recently modded one of my units and am very happy with the results.
Check it out
http://waggies.net/Ken/Sena/Cougr67
2012 C14
