> Now if anyone could just quantify the acoustic differences between the 140s and the 184s....
There's essentially zero difference acoustically.
After running both of these mics, my ears tell me differently.....
There is no "acoustic" difference at all - any differences are in the electronics. The KM 100 series is an older design.
I tended to run my 140s with the actives, so that could be what I'm hearing. But there was definitely a difference.