After looking over a great thread on high frequency drivers for high end cabs, LINK I was wondering how my high frequency hearing is doing now that I'm 45. According to a test on this site, LINK it's down to 14-15KHz from 20KHz... some years ago. Go to the site and test your hearing. I'm just curious how my hearing is compared to others on this site. I'm 45 and wear in ears for monitoring as well as hearing protection. EDIT with better headphones I started hearing between 16-17K I'm guessing that's as good as I'm going to get. I need to try this out with my kids and wife.