Electro-Voice EVID C4.2 - 4-Inch 2-Way Coaxial Ceiling Loudspeaker (White / Pair)The Electro Voice EVID C4. 2 loudspeaker system is a complete two way ceiling loudspeaker package. The package consists of a bezel assembly, grille, rear enclosure, 4 inch coax two way loudspeaker and internal line matching transformer. The louspeaker features a waveguide coupled titanium coated dome tweeter. The EVID C4. 2 loudspeaker utilizes a 2nd order crossover network at 3. 3kHz, with a comprehensive protection circuit to protect the network,