Use Newegg coupon code EMCYTZT2322
Today only, Newegg has this Klipsch 10" 225-watt Powered Subwoofer for $149.99. Use the coupon code and the price drops to $119.99. It features an integrated 225-watt peak (55-watt continuous) amplifier, 10" down-firing fiber-composite cone woofer, and frequency response of 29Hz to 120Hz. Buy.com
has the same item for $319.99. Shipping is free.