JBL CONTROL 24CT Control 24Ct Ceiling Speaker White (Pair)The white JBL Control 24CT Ceiling Speaker features high power sound reproduction with a wide frequency response and low distortion. The 130 coverage pattern allows fewer speakers to provide consistent sound levels throughout a space. The Control 24CT is constructed with a coaxially mounted 4" woofer with butyl rubber surround and 0. 75" titanium coated diffraction loaded tweeter. It includes a 30W multitap transformer for use in either 70V or 100V