just assign the mapping to All Ports (even if you have 2 controllers).

 

- Switch from Deck A to C on the same controller

- Switch from Deck B to D on the other controller

- See pic + video what does what.

I use this one in combination with the Kontrol S8, so i dont miss the platters and direct pitch-fader too much.

I've used the DJ-Tech CDJ-101's first, but the accuracy of the platters on the Denon DJ DN-SC2000's are way better.

 

The platters didnt work correct initially.

I had to update the Firmware to v1.25 1st.

After that they work flawless =)

For more info see: https://mega.nz/#!Zco3EShL!EJB5UxMzFgN9BfFxsAwhCxt4PF6c95q24JJD3MRExDA which includes latest Firmware by Denon (incl. PDF instruction how to update).

 

- Make sure all your gear is already connected

- Hold Shift + Browser for Deck A/C to assign midi-channel to 1-2 (for your left controller)

- Hold Shift + Previous for Deck B/D to assign midi-channel to 3-4 (for your right controller)

- Open Traktor

- Go to Preferences / Controller Manager

- Click the Big Import button on the bottom

- Search for the unzipped .TSI file and open it

- Make sure Controller Mappings + Effect Settings are ticked on

- Set in/out port to All Ports

- Close Traktor, and open Traktor again