Up for sale I have a pair of Polk Audio LSiM703's. Speakers are still brand new and still in the factory sealed box. This is the new and improved, top of the line bookshelf speaker from Polk Audio. The LSiM series replaces the standard LSi as the flagship speakers for Polk Audio. I had to place a special order to even get these as Polk is unable to keep up with the demand, placing them on back order! During the long waiting process, I decided that I wanted to get some LSiM towers instead. The problem is that now I can't return the speaker since I had to special order them.