Best I can tell, having the Low Steep and High Steep buttons "ON" when trying to do Hi Pass/Lo Pass cutoffs gives the least amount of filtering whereas having those buttons "OFF" gives you the greater filtering of highs and lows...at least that's what I'm hearing. Is that right? There may be some tightening of the low end though when I press the "ON" button for the Low Steep.
What is their purpose?