I am very new to DIY, but I find the idea of building a subwoofer very appealing, especially if it can outperform more expensive subwoofers. I was thinking of combining the Adire AVA250 250 watt subwoofer plate amplifier with the Adire Shiva 12" subwoofer driver(from Creative Sound Solutions). I have seen a few box designs from the Adire website, but have not decided on one yet (the sub would be for home theater use almost exclusively). I'm fairly handy with tools and the idea of building a box doesn't seem too intimidating(at least not until I get started ). My question is: with the amp and driver and box, do I need anything else to build the sub? Any input is greatly appreciated.