Answer
All of the K and KW loudspeakers will accept a full range signal. If you are using the KSub or KW181 there is a low pass filter set in the DSP at 100Hz. When the Ext. Sub switch on a K or KW top speaker is turned on, a High pass filter is engaged that is also set to 100Hz. This will effectively create a crossover between the subs and the top speakers.