Your trusted source for JBL ControlCRV. The Control CRV from JBL is a compact loudspeaker ideal for indoor or outdoor installation. The sleek, weather-resistant housing contains dual 4″ woofers to provide high-quality sound. The speaker has a 70/100V transformer and can also work with low impedance systems. The curved design allows you to combine speakers into half-round or full 360° arc clusters.