Newegg via eBay offers the Klipsch Synergy Series 300-watt 12" Subwoofer, model no. SUB-12HG, for $179.99 with free shipping. That's $20 below our mention from two weeks ago and the lowest total price we've seen. (It's also the best deal now by $50.) It features a 12" down-firing driver, frequency response of 24Hz to 120Hz, 300 watts of continuous power, and adjustable crossover.