recording problem with djm nexus 900 - bad sound

Hey there,

i had a look at all the posts about this problem but i couldn't find the solution.

I use: djm 900 (firmware and driver updated with last version) + traktor (2.5.1) + X1 + Macbook (10.6.8, i5)

When I play i don't have problem, the sound is good......but......if i record a mix, the sound is awful....

I've tried everything and now i don't know how to fix this problem...and i really need to record my mixes

Can someone help me??

Best Regards