... pa pro dual 12" outdoor performance line array speaker(W-8) Features--Detachable front dolly panel--High fidelity,durability and ... units, two 3” titanium neodymium compression drivers and high-performance low-distortion compression driver with innovative horn design of ... CVR S-218/CV-218B , which brings superb line array performance to large stadiums, big outdoor concerts, commercial events, etc ...