SKN: IMPACT-12 …Brand New Genuine Velodyne Impact-12 Subwoofer. The down-firing port on the Impact-12 gives more bass output with less distortion than similarly priced subwoofer from other companies. With its 275 watts of amplifier focused on the 29 Hz to 140 Hz frequencies, you get a ton of bass for your dollar. You can blend the Impact-12 with your satellite speakers using the adjustable low pass crossover frequency feature. All this great sound is wrapped up in an attractive black ash wood grain colored cabinet with black gloss trim. This is a special online only price, and product will ship directly from Velodyne! Read more about it here.