JBL offers its refurbished JBL Studio 2 Series 12" Powered Subwoofer for $199.99 with free shipping. That's $400 under the lowest price we could find for a new unit. This 300-watt speaker features:

29Hz to 150Hz frequency response

12" PolyPlas low-frequency transducer

line-level and LFE inputs

phase switch, level control, bass boost, & signal-sensing auto power

Note: A 5-year JBL warranty applies.