micheljohner6 years ago000Does this subwoofer fit the R-51 PM system (also from Klipsch)? If so, do I need to buy an additional cable for it?Show in original language (German)daniel5519676 years ago000Hello I don't see any reason why the subwoofer should not fit as it is also an activsubwoofer. The most you need is an audio cable that sends a sound signal to the Woolfer. Greetings DaniShow in original language (German)Comment