Atlantic Technology has introduced what it is calling a “down-firing” sub – basically, the woofer and bass vent are on the bottom of the speaker cabinet. Dubbed the SB-900DF, it’s designed to be somewhat compact and can be squeezed into tight spots behind furniture with no concern of the output being muffled by the back of furniture as might be the case with the original SB-900 front-firing subwoofer.

While the new Atlantic Technology SB-900DF is relatively small, it’s deep. The 8-inch long-excursion woofer has an oversized surround and high-energy magnet. It includes a 125-watt power amplifier and all the basic range of tuning controls to improve the system’s interaction with the room, including an adjustable crossover and a phase switch. Auto-on sensing saves power and the need to manually turn it on and off.

The Atlantic Technology SB-900DF has a peak output of 102 dB SPL in a 2,000 cubic-foot room and a frequency response for 32 to 200 Hz, ±3 dB.  The black-finished cabinet measures 10-7/8 wide, 13-1/8 high and 13-1/16 deep, and weighs 28 lbs. The SB-900DF and SB-900 (front-firing version) are both shipping and list for $349.

More details are here: http://www.atlantictechnology.com/default.asp?NodeId=164