Leviton AECCS-VCE Architectural Edition Powered By JBL Dual 5-Inch Woofer Two-Way Shelf-Mount Center Channel Loud Speaker, Black Straight-line Signal Path (SSP) crossover network for minimal signal distortion Dual 5 inch JBL PolyPlas cone woofers FreeFlow flared port for increased bass response without adding unwanted port noise Elliptical Oblate Spheroidal (EOS) waveguide technology for improved high-frequency dispersion Part of Leviton's award winning residential system