The PC251BK from Infinity is a 2-way passive center channel speaker. The speaker has a low-resonance cabinet that houses a pair of 5.25" woofers and a 0.75" tweeter. Each of the drivers uses proprietary Metal Matrix Diaphragm (MMD) technology to deliver accurate audio reproduction with low distortion for natural, lifelike sound. A tweeter waveguide provides a wide sweet spot for excellent on-and-off-axis high frequency response. The drivers are magnetically shielded for safe use near video monitors and other electronics. The rear of the cabinet has 5-way binding post terminals for wide compatibility with a variety of amplifiers and sound systems.