Technicalities of Stereo Systems on Motors

on the way to dallas a few years back my oldest on his 06 r3 me on my 07 wearing speakers in helmet he said he could tell when a good song came on cuz I usually gained 10 to 15 mph although I never slowed back down mostly old time rock&roll lynyrd,zztop,segar,stones,tull,winter brothers,etc.as for a system on bike kind of useless unless you have a fairing?
 
I hope I never have a need for that information.

Lupe, where's that picture of your stereo on the back of your HD?
I didn't wanted to post this pic because i'm afraid somebody will still the patent but what the hell. here you go people, if you want a stereo go big or go home