Acoustic Sound Design via Amazon offers the Harman Kardon HKTS 9 5.1-Channel Home Theater Speaker System in Black for $129 with free shipping. That's $26 below our May mention and the lowest price we've seen. (It's the best deal now by $471.) It features a frequency response of 45Hz to 20kHz, 200-watt powered subwoofer, five wall-mount brackets, and color-coded speaker cables.