Chauvet Pro IP Flex Power & Data Extension Cable 15 Foot 12 channel You’d need three 18” or silver wave black You’d need three 18” or four 15” speakers to move as much air as the SVT 610HLF it’s best to make sure it doesn’t exceed any of the maximum dimensions shown here This cable is IP67 rated meaning that it is dust and waterproof and suitable for outdoor use This 15' IP Flex Power & Data extension cable from Chauvet is designed for use with compatible Chauvet products and allows you provide power and data signals to equipment over farther distances from the source than would be possible using only the manufacturer provided cable