Klipsch Reference R-51PM
No receiver required with these versatile speakers: I love that you can connect just about anything to Klipsch R-51PM speakers and save space, because you don't need a receiver. But I'd be remiss if I didn't point out that these speakers offer impressive sound , too. Each features a 1" aluminum diaphragm compression tweeter matched with a 90 degrees x 90 degrees Tractrix horn and a 5-1/4" woofer with the classic Klipsch spun-copper look. Rear bass ports make sure you hear the low notes while you're rocking out to your favorite tunes.