Amazonhas theKlipsch Sub-12HG Synergy Series 12-Inch 300-Watt Subwooferin High Gloss Black for a low$199.00 Free Shipping. Tax in many states. This subwoofer normally sells for $499, so you're saving 60% off the list price. Amazon's #1 Best Selling Home Audio Subwoofer 355 reviews on Amazon with 4.7/5 (94%) rating Affordable 12-inch down-firing woofer produces best-in-class deep bass Precision matched BASH amplifier w/650W dynamic power (300W RMS) Significantly extends the bass range, dynamics & performance ofany system Features line-level (RCA) inputs & speaker-level inputs Response: 24Hz-120Hz +/- 3dB