Martin Logan Dynamo 300 Subwoofer, great condition (one small nick in the cabinet). Purchased in 2015, the Subwoofer functions perfectly. Retailed for 295, full specs and owners manual at link below {url removed} DYNAMO 300  Compact and affordable, Dynamo 300 is meticulously designed and manufactured to our highest standard to deliver staggering low-frequency performance. Every element of Dynamo 300, from driver to amplifier to crossover to cabinet, is meticulously designed and manufactured to our highest standard. The result is staggering low-frequency performance for a subwoofer of its size and price. Perfect for either home theater or stereo applications, the Dynamo 300 is built with high-density materials to minimize cabinet resonance and provide a solid foundation for the high-output 8-inch woofer and high-current 75-watt, 150-watt peak amplifier. Whether you are looking for high performance bass to enhance your music experience or take your home theater system to the next level, a new Dynamo family subwoofer should be at the top of your list. Launched in 2011 Price when discontinued: $295.00 Specifications Specifications are subject to change without notice Frequency Response 32–150 Hz ±3dB; Anechoic through LFE effects input Impedance Left & Right/LFE RCA: 10,000 Ohms Left & Right Speaker Level: 10,000 Ohms Compatible with 4, 6, or 8 Ohm rated amplifiers. Low Frequency Transducer 8" (25.4cm) high excursion, polypropylene cone with extended throw drive assembly; ported Amplifier 75 watts rms (150 watts peak) Low Pass Filter Frequency 45–150 Hz Inputs Left and Right/LFE RCA line level, Left and Right speaker level Weight 21.5 lbs. (9.8 kg) Dimensions (down-firing orientation) 14.15" x 12.6" x 13.75 " (36cm x 32cm x 35cm)