Harman Kardon offers its Harman Kardon HKTS 30 5.1-Channel Home Theater Speaker System in Black for $224.95 with free shipping. That's tied with our mention from last month as the lowest price we've seen for this popular model. (It's a low today by $158.) It features a frequency response of 45Hz to 20kHz, 8-ohm impedance, four 120-watt two-way satellite speakers, one 120-watt dual-driver center-channel speaker, one 200-watt down-firing subwoofer, and all the necessary cables and wall-mount hardware.