Okay, I have read many of the threads in the DIY Subwoofer area and I am just not getting the whole picture on building my own sub. I'm usually a pretty fast learner but I'm starting this thread to see if I can get some straight forward, to the point answers. I want to build a subwoofer. I have good electrical skills and woodworking skills. I have been looking at retail subwoofers for awhile now but can't justify spending that much money on the ones I really like. Those would be ones like the Fathom 113, the Velo DD series, or the Sunfire Subs. The sub I want to build will be used entirely for home theater in a dedicated home theater room. I want something that will equal or beat the above mentioned brands. Basically, punch you in the chest and be able to dip very low to 20hz and lower. Now, I'm not sure what type of box I should use, if it should be sealed or ported, or what size it should be. I also dont know what brand of sub or size to buy to acheive what I am looking for. I was looking at the RE XXX subs but they are 2 ohm and I didnt know if those would work. I also don't know what size or brand amplifier to use either that would provide suficient power to get those kind of results. I also dont know if I need anything else like an equalizer or if all I need for electronics is the sub and the amp? I know you guys out there probably get sick of guys like me asking these questions, but can someone please help me out with this? Or post some links where people have built the kind of sub I'm talking about and show the steps. I really do appreciate it.