R 15S and R 18S active subwoofers share the same rugged enclosure and elegant finish of their full-range companions. The M20 thread for pole mount makes installation very easy.
Both subs of the series feature a Stereo input and a cross over Output. This is very convenient for plug&play applications, using a PA comprised of 1 sub and 2 tops, as you don’t need any external processor to manage the crossover and the signal routing: you just feed the sub with both left and right signals, and then you can split your signal directly on board thanks to the crossover output.
When needed, you can simply use it as a link out to provide full range signal to another sub.