Newegg offers the Klipsch Synergy Series 300-watt 12" Subwoofer, model no. SUB-12HG, for $188 with free shipping. That's the lowest total price we could find by $42, although we saw it for $8 less three weeks ago. It features a 12" down-firing driver, frequency response of 24Hz to 120Hz, 300 watts of continuous power, and adjustable crossover.