Newegg offers the Klipsch 12" 300-watt Reference Series Powered Subwoofer, model no. SW-112, for $199.99. This $20 mail-in rebate cuts that to $179.99. With free shipping, that's tied with our mention from two weeks ago as the lowest total price we've seen. (It's a current low by $61.) It features 300 watts RMS power, a 26Hz to 120Hz frequency response, speaker- and line-level inputs, 12" fiberglass woofer, and auto on/off. Rebate expires March 31.