Klipsch black reference theater pack we've taken the premium materials and acoustic technology of our revered reference Series and designed a beautiful 5.1 surround sound system to pair with your favorite AV receiver. Complete with a wireless subwoofer, The reference theater pack brings the Klipsch cinematic sound into your home with an incredibly minimal footprint. Cinematic performance The reference theater pack delivers superior Acoustic performance by leveraging injection molded graphite (IMG) woofers. These exceptionally lightweight cones are extremely rigid ââ‚?providing remarkable low frequency response, with minimal cone breakup and distortion. A linear travel Suspension (LTS) tweeter minimizes distortion for enhanced, detailed performance. Lts tweeters have been a hallmark of our reference Series product lines, making it a core component of one of the best speakers in the world. Horn-loaded power Our exclusive tractrix Horn technology and aluminum tweeters deliver the most impressive high-end response and greater extension, enhanced Imaging and powerful dynamics. This creates the cleanest, most natural sound possible. Wireless, robust bass The down-firing wireless subwoofer is designed to deliver room-filling low frequencies without requiring too much floor space. The 2.4GHz connectivity allows for premium, CD-quality sound anywhere in the room. Simply connect the compact, pre-paired TRANSMITTER to the subwoofer or LFE out on your receiver and place the subwoofer where it sounds and fits best in your room. The built-in all-digital subwoofer amplifier delivers ample power with high efficiency and true-to-source accuracy. Flexible system placement to complement the easy placement of the wireless subwoofer, each satellite speaker has a keyhole mount and a ¼ââ‚?x 20 threaded insert (the center channel has dual keyhole/ inserts) for maximum mounting flexibility.