i´ve installed DICE into my 2001/08 e39 with DSP, everything is working fine, sound quality is good, i can see track names and stuff on navi. but there´s one small (actually big) problem, i get knocking sounds when adjusting volume (i push volume once, i get one knock), it seems like it´s coming from sub :S what to do?

Ipod Nano 4GB, firmware is 1.2