[Elecraft] K3 DIY DSP Rev D - please elaborate

[David Lankshear]

Gleaned from this reflector, I'm only aware of the lowering of the bass rolloff frequency.  Elecraft and W9AC did it in different ways, although only W9AC's changes are published.

73 & HNY DaveL  G3TJP
OK...so besides the LPF, what else is different on the DSP "D" board?
I don't think I've seen any elaboration anywhere.

thanks,
de Doug KR2Q