Alright, after doing a few Shiva installs in people's cars for the past 5 years, I think I would like to trade in my modest 10" 120 watt powered sub for a meat eatin' Adire driver subwoofer. My dilemma is, I have an older robust and powerful Pioneer amp/receiver that I would like to try to use for the amp to power an Adire driver. It's power output is rated at 80-100 watts per channel (from 10hz to 100,000hz), meaning about 160 to 200 watts for a DVC Adire sub. Will this be enough power for a home sub? I have done installs with Shiva's and Tempests where each sub is receiving anywhere from 400 to 1,200 watts with no problem, but I really don't want to invest in a home amp that will do these numbers-I have better things to spend my money on such as a new flat screen! Both the Shiva and Tempest are incredibly efficient in auto environments as well, so I am hoping the same is true for home circumstances. Any help on this subject would be grand! Also, I would like to know what size enclosure would be best for a Shiva or a Tempest in a home environment. Ported? Sealed? In car audio we always went with 1.5-2 cu. ft. sealed for Shiva's and a little bigger than that (about 2.5) for Tempests. Thanks for any input you can offer! And last, I need someone to explain in 20 words or less (or more if that is what it takes) why would going with a sonotube be better than a standard enclosure? Thanks!