Jeff at Zilla audio (he's Godzilla on the forums and of BIB page fame) has put together a great looking helper woofer kit for the Wild Burro Audio Labs Betsy. Betsy of course works well all by herself, but a couple of 15" woofers will take her to a new level! Jeff's kit looks really easy to implement and is very competitively priced. Check it out at:
http://www.zillaaudio.com/betsy-boomer.htmpj
www.wildburroaudio.com
