This is taken from Rythmik website.
For users not using bass management: select either 50hz/24 or 80hz/24. 50hz/24 means the plate amp implement a low pass filter with a fixed 12db at 50hz, plus the 12db adjustable knob to make up a 24db total slope. Similarly for 80hz/24. The following shows the frequency response of this 50hz and 80hz fixed filter.
My question is when you are set to 50hz/12, you have a fixed 12db plus 12 more db with the adjustable knob. Which knob is the designer talking about? The phase knob?
I just ordered my F12 and have been studying the control setting. I really I have more control than my REL.
Thank you.