I have a rack mounted version of the 861 sitting on top of a G series active rack. I programed one of the triggers of the 861 to turn on the fans built into the active rack. The 861 and G active racks are ver similar with the 861 being taller. You could also get something like this fan system if your equipment is out of ear shot. As a side note I believe Meridian intentionally designs the case to be used to disperse internal heat as a heat sync. Because of this it is normal for it to be warm. Obviously the warmer the ambient temperature the warmer the case will be.

558.2 amp, Meridian A500 speakers, M2500 sub, Director & Explorer DACs