Active Subwoofer Modules for the Digital Age. Due to state-of-the-art technology in the digital D class, the digital active subwoofer modules from MONACOR provide a powerful bass reproduction in self-built subwoofer systems. The components feature a high power efficiency and provide an energy-saving operation. The lightweight design of these models which are available at an attractive price ensures a low total weight of the speaker system. Class D active subwoofer module, 200 W at 4 ΩHigh-performance active module in class D technologyVariable low-pass filter: 40-200 Hz (18 dB)Continuously adjustable phase control 0-180° for perfectly matching it to the main speakersLine input, par. line outputIntegrated bass boost of approx. 3 dB at 40 HzHigh power reserves SpecificationsPeak output power 280 WPower rating at 4 Ω 200 WPower rating at 8 Ω 100 WChannels 1Inputs max. 7 V/20 kΩAttenuation factor 26.6Frequency range 20 Hz - (var. 40-200 Hz)S/N ratio > 70 dBTHD < 0.1%Mains voltage ~ 230 VMains frequency 50 HzPower consumption, operation 330 VAPower consumption, standby > 0.5 WAdmiss. ambient temp. 0-40 °CConnections 1 x RCA (line in), 1 x RCA (line out) Dimensions178 x 204 x 80 mm Weight1.05 kg