I made a nifty tool, an online calculator (with valuable help from Brad Starobin -- a Polk Engineer) that recommends a subwoofer choice based on your room size and type of main speakers used. We would like you polkies to test it and make comments and suggestions prior to making it public on the website. It's located here:
Play around with it -- is it useful? Easy to use? How 'bout the title? Getting an error? Anything that pops in your head!
Email me directly (firstname.lastname@example.org) with any feedback you may have, or post it here.
Thanks for your help guys!