Hi, I've been researching the Anthony Gallo Micro's for my HT. I emailed them about freq. range since their website is unclear. One portion says bottom is 120hz, another page says bottom is 80hz. The sales support at Gallo replied saying the Micros (which are about 2 years old) have been shipping with "semi-transparent drivers" for about 8 months, and they can be taken down to 80hz. Can someone explain how these would allow for lower frequencies? Thanks.