First Subwoofer - What should I pay attention to?

Here's the thing, if you cut too many corners or make the wrong compromises you will be disappointed in the results. Hence my suggestion of a tried and true kit. The 60Hz I mentioned was the crossover point between your main speakers and the subwoofer. If you want to go the Parts Express route then I'd suggest sticking with on of their recommendations. They have some nice bundle packs for subwoofers that include baffles and boxes, etc.

Thank you Octavia, and I agree with a lot of your suggestions. As a beginner, I’ll take any advice I’ll get. As far as the crossover is concerned, i understood that, and was thinking that i shouldn’t focus on any frequencies above 60 as they’re going to be filtered out for the most part, ideally.

The more I think about it, the more I think that I’ll be very happy with the result as long as I understand why I’m doing something. I’d do a kit if they explained why they paired the driver with the construction they used, or something similarly educational. That’s why I thought I’d select a driver (maybe I’ll look at a low throw driver) and then design the box around that!

I have seen and read a lot since the last post about throw and excursion, and I’ll have to strongly consider a larger driver. I guess I just have to balance things somehow. Thank you Impunity for the advice and explanation! I’m reading as much as I can as fast as I can, there’s a lot out there :O
 
I found speaker building 201, but couldn't find 101... Is that the same/adequate?

As far as my system is concerned, I am planning on getting some Elac debut 2's. I'm not totally sure yet though. Are there any better suggestions until I get around to making my own? Originally I wanted to build my whole system from the low frequency up. Is this a wise strategy?
 
Elac has a box sale right now and I have heard rave reviews so I'm probably going to pull the trigger. I have watched interviews with Mr. Jones, and the speakers he made for Pioneer kept me sane through college, he's really cool.

I saved up some money from my last job to enable my audio passion.