Iv been reading up on some scientific studies about sound levels. i know that your ears are much more sensative to higher frequency sounds. they say that at around 140db exposure for only a couple miniutes can cause hearing damage. i know alot of people can hit 140db with their subs. does this happen with the low frequency sounds also that you would have produced from a subwoofer. anybodey been in a car hitting 140db or above comment and let me know.