The three modes, left to right:
- Sharp (cuts in immediately)
- Logarithmic (gentle curve with a dip in the middle)
- Linear (constant volume slope)
For scratching, the Sharp setting is preferred. No, it's not designed or intended as a battle scratch crossfader -- it doesn't hold a candle to the Magvel or Magvel Pro crossfaders in some of our other products.
The Log curve is the best bet for mixing where you leave your channel faders at 10 -- the reason it has a slight dip in the middle is to ensure that tracks which have equal gain will not sum to cause an inadvertent rise in master level.
The reason the knob was replaced with a 3-position curve is our surveys found that most DJs were using one of those 3 anyhow.
What is your "ideal curve" and why don't you find what's provided is adequate in any position?
Here is the wave form as I move the fader from left to center and back- Not sure how well it will translate...but here is audio as well: