So as you guys know I have my Cambridge audio connected via the 5.1 ch in using analouge cables to my AV unit.
I can hear a ringing noise coming from the Sub everytime I send a test tone to it using the Bluray setup up. Nothing like this occurs with the test tone through the AV unit.
I have used the 700AUD phono cable to connect the Cambridge Audio Sub Out to the back of the AV. Could this be the problem?
The sound is a ringing noise, almost like an old 56k modem dialing up.