Klipsch RP400M Regallautsprecher schwarz per Paar The RP400M bookshelf speakers offer maximum versatility without sacrificing performance from a small yet elegant audio solution. Designed as main speakers for a compact living space or surround sound to support a Reference Premiere speaker system the RP400M bookshelf speakers are the ideal choice for your home theater system. Features: 1" Titanium LTS Vented Tweeter with Hybrid Tractrix Horn 4" Spun Copper Cerametallic Woofers BassReflex via Rea