Hello, I am getting into the DIY Area and have built some GR Research Paradox 1's which I love but now I want a subwoofer. Based on research here and elsewhere online I have decided to take the plunge into DIY subwoofers. I have looked into various drivers, specifically the Adire Shiva and tempest, been playing around the LspCAd as well. I am a college student and live in a dorm room that is fairly small. The dimensions in meters are 2.55 Height, Depth 5.145, and Width is 3.63. The system is going to be used for both Music and HT and will play from about 60 Hz down, my bookshelves drop off quickly after that. I don't have any particluar space requirements but nothing rediculously large, something under 300 liters. I can do Adire tempest, shiva, etc. I am a blank slate and am just looking for ideas. I want something that will extend fairly low, at least flat to 20 Hz, it should not be too difficult based on my small room. The choice of driver, amp (pro/plate), eq, does not matter. The sub is being built by a local woodworker, I lack the tools and experience, and is going to be build out of Void Free ply. Adire recommended this and will allow me to finish with Tung Oil to match my bookshelves. Any suggestions???