DetailsDescriptionKlipsch R-51PM Powered Bookshelf Speakers (Pair) The Klipsch R-51PM Powered Bookshelf Speakers are a 2-way Powered Bookshelf speaker system with Bluetooth wireless connectivity. Klipsch R-51PM Powered Bookshelf Speakers built-in amplifier provides 120-watt RMS( 240-watt Peak). The built-in power amplifier saves space & eliminates the need to connect Klipsch R-51PM Powered Bookshelf Speakers to a stereo receiver or external power amp. The Klipsch R-51PM 2-Way Powered Bluetooth Bookshelf Speakers features a 1" Aluminum Tractrix Horn Tweeter and 1 x 5.25" Copper-spun IMG Woofer. With a built-in amplifier, a multitude of inputs and Bluetooth connectivity, the Klipsch R-51PM Powered Bookshelf Speakers is the most versatile Powered Speakers, Bluetooth Stereo Speaker, Computer Speakers, Desktop Speaker System in its class. Connect the Klipsch R-51PM Powered Bookshelf Speakers to your TV for movies or music sound or music from your computer, laptop, turntable or nearly any source. Klipsch R-51PM Powered Bookshelf Speakers feature Bluetooth connectivity plus stereo RCA input, optical input, and 1/8" aux inputs for traditional wired devices, and a USB Type-B input for music stored on your computer. The RCA input is switchable between line-level and phono inputs, allowing you to switch between a turntable and other wired sources. The Klipsch R-51PM Powered Speakers have a 2-way design with a built-in  120-watt RMS (60W per speaker) Product Highlights: 1" aluminum diaphragm compression tweeter matched with a 90° x 90° Tractrix® horn 5-1/4" spun-copper woofer Rear-firing bass-reflex port Dynamic Bass EQ gives you fuller bass at low volume 120 watts power via built-in amplifier Frequency response: 68-21,000 Hz (±3dB) Bluetooth technology for streaming from compatible devices Built-in phono preamp Compact remote control included Connections (back of right speaker): Optical digital audio input (2-channel PCM only) RCA stereo analog audio input Switch for selecti