grinderz I always wore my hearing protection in the engine room, the boiler room etc as well but I still took a hit on my hearing. I wonder if sometimes a noise is just so loud it just goes right through you and does it's damage.
Here's something to consider, driving with your car window open, the wind blowing across your ears, it's low freq but how loud is that really? I mean, all sound is is pressure waves or air movement right? I wonder what kind of damage the wind blowing across your ears does.
Aaron