jafant - Yes
The CS2 is the Dynaudio D28AF or later D28/2 which are Ferro-Fluid units.
The CS2.4 coax (I've been told, but not certain) is also F-F
Note there are many different formulae of F-F and only the correct one will keep the original parameters intact. Note also that a specific amount must be used.Too much will roll off the high end and too little doesn't give enough heat protection.
Rob is quite expert, I am not.