Why is my ipod creating parasitic signals on the speakers? Answered
I'm currently trying to build an ipod dock out of these speakers (http://www.netbooks-umts.de/lautsprecher-hamma-sonic-mobil-80,305.html â€” they use an usb plug as alimentation) and since i'd like my station to be able to charge the ipod, I decided to use a double usb charger: http://www.agelectronique.fr/ag/p_produits.php?cat=5&sous_cat=60&ref=85-8984
When and only when both speakers and ipod are connected to the charger and the speakers' jack is connected to the ipod, I get a parasitic signal on the speakers. I tried all the other configuration (using one or two power sources, using a different audio input), but none present the same issue.
Would you know why I have this problem ? Do you know how I could solve it ?