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Polk Audio PSW10 10″ Powered Subwoofer Front-Firing 100W Peak
A 10-inch Dynamic Balance cone in a front-firing ported MDF box with 0.75-inch baffles — 50 watts RMS, 100 peak, and useful output from 35 Hz. Line-level RCA in and speaker-level spring clips, so it will connect to a receiver with no subwoofer output at all. Variable crossover from 80 to 160 Hz, phase toggle, auto on/off. Very good condition.