As one of its daily deals, Newegg offers the Energy 8" 60-watt Powered Subwoofer in Black Ash, model no. ESW-C8, for $129.99 with free shipping. That's $40 off list and the lowest total price we could find. It features an 8" woofer with ribbed elliptical surround, continuously variable 40Hz to 150Hz crossover, and a frequency response of 36Hz to 180Hz. Deal ends today.