- Polk Audio s balance drivers and tweeters for wide response and low distortion. <br>- Rubber driver surrounds for a lifetime of reliable high performance. <br>- Wide dispersion drivers and tweeters project sound over a wide area. <br>- Front mounted bass port for deep, punchy bass. <br>- High efficiency design allows them to be driven by unpretentious amplifiers and receivers, revealing that classic Polk sound...open, spacious and clear. <br>- Magnetically shielded for safe placement near TVs and computer monitors. <br>- 5-way binding posts provide a wide array of secure wire-hook up options. <br>- Built-in keyhole slot for quick and easy wall mounting.