JBL LC1 3-Way, High Performance Dual 5 -1/4-Inch Center Channel Loudspeaker (Black) 1" pure titanium dome tweeter for exceptional high frequency performance 3/4" Mylar-dome, cast-frame chassis mounted in a bi-radial horn for better high frequency repsonse Aluminum waveguides provide better dispersion and a larger listening sweet spot Freeflow port technology delivers great sound and makes sure you get the lowest amount of distortion Gold-plated, 5-way bi-wirable binding post