I have had this speaker system for about two weeks now. I have a 2013 Heritage Softtail Classic, stock exhaust. The sound is better than anything that I have heard so far. Clear loud sound at almost any speed. Mind you the new 103 doesn't have vibration so this may be a factor in older bikes. Heard all variations of sound except some real lows at 65 +. I could hear it very clearly no matter how fast I went. I would recommend getting help holding the speakers if you have a 1" bar but other than that installation was straight forward by interpreting the instructions. Looks like it was written for a tech , not back yard guy.