I have 2 original SVS drivers that I plan to make a coffee table sub out of. I have played with the design in Win ISD. Here is what I come up with: ~9.7 cuft enclosure, with 2 6" ports at 3ft in length that would tune the enclosure to ~18hz if I am using the software correctly. How does this look? Also, I will be using an Adire AVA250 plate amp to drive this sub. If I wire them in parallel they will present an 2 ohm load to the amp. Is this to low a load to drive with the amp? Or sure I wire then in series and present an 8 ohm load to the amp? Thanks Once I start I will put out alot more details.