How Big??

Anyone recommend what sixe of box i'd get the loudest noise(estimates welcome lol) from if i were running a pioneer TS-W121SPL sub in a ported set-up?

Oh yea that'll be with an 800wrms at 2ohm amp

Here's a program that will help you with that. Click Here. (http://www.linearteam.dk/default.aspx?download=winisd)

It's called winISD. Just read through the instructions, it takes a little getting used to, but it works great.

thanks mate, have to give that a look