Polk Audio PSW505 12-Inch Powered Subwoofer (Single, Black). Brand new and factory sealed. The item "NEW POLK AUDIO PSW505 12 POWERED SUBWOOFER BLACK SINGLE FOR HOME SPEAKER NEW" is in sale since Tuesday, June 19, 2018.This item is in the category "Consumer Electronics\TV, Video & Home Audio\Home Audio\Home Speakers & Subwoofers". The seller is "shortstopllc" and is located in USA. This item can be shipped to United States.