As a compromise between getting a cheap-a$$ sub and the 12" Titanic kit that I can't afford, I'm considering builing my own sub. This will be used for HT, about 80 percent of the time.

I am not confident in my skills at creating an enclosure from whole cloth. I also want the sub to be of moderate size. At this point, my starting point will be the 2.0 cubit foot sealed box that's already fabricated, from partsexpress.com. This 17" cube is the biggest I can fit for my application.

I've also heard from kexodusc (thank you!) that the Dayton 15" Quatro mated with the 3.0 cubit foot enclosure would be even better than the Titanik 12" kit, but this would be too big. Also, when I looked at the specs for the 15" Quatro, partsexpress suggested a 2.0 cubic foot sealed box. Alternatively, the 12" Quatro looks like it'd need only 1.0 cubic foot enclosre for a sealed configuration.

So, here's my question: If I'm limited to the 2.0 box, should I mate it with the 15" Quatro or the 12" Quatro? The 15" looks like it'll go down to 20 Hz.

With respect to the plate amp, is there much of a benefit going from the Dayton 240 watt amp to the 300 watt BASH amp?

I realize these are probably very simple questions, but I've never built a speaker/sub before. Thanks for your patience.