MMM drive frequency

[SpEEdyBL]

Yeah, I notice this as well with my MM. I was looking around at the neu website and they seem to recommend 13 khz for their motors. I wonder if that is what the MMM is set at because castle will be comboing the MMM with their version neus. I would like to know for sure because there seems to be wide range of motors that people are using and each one may require a different drive frequency to run most efficiently depending on if its two pole, four pole, slotted, slottless, wye wound, delta wound, high turn, low turn or what not.