Jeff at Zillaaudio (Godzilla on the forums) has put together a fantastic looking OB kit for the Betsy. It includes a pair of 15″ woofers, an outboard amplifier for them that includes a crossover and level control and all the cables you need for <$300. You can order direct from his site. This is really a great application for the Betsy, and could take her to a whole new level. The price to performance ratio is perfectly in line with WBAL principles, and this sort of DIY’er cottage industry networking is really exciting to me. Check out Jeff’s site for more info: http://www.zillaaudio.com/betsy-boomer.htm I’m going to get this up on the projects page as soon as I can.
Bang for your buck.