Hifi Subwoofer from Teufel model US 2110/1SW Highlights All specs and features at a glance Premium active subwoofer For surround & stereo sets Speaker: 1 x 250 mm woofer Downfire principle Power: 125 RMS Recommended for the Teufel systems Consono, Varion, Kombo, Cubycon, Ultima & Columa Suitable for all AV & stereo receivers With its 45-liter volume enclosure and a weight of over 20 kg, the US 2110/1 SW subwoofer is a true Hercules. The subwoofer delivers full, powerful, and accurate bass reproduction with a cutoff frequency of 38 Hz (-3 dB).