Sub woofer ringing noise

[duaplex]

So as you guys know I have my Cambridge audio connected via the 5.1 ch in using analouge cables to my AV unit.

Problem

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.

 

[Frank Harvey]

Sounds like the two test tones are slightly different frequencies, so one might be exciting something within the sub. Make sure that the ringing you're hearing isn't from something nearby - I once had a similar thing while I was watching films and listening to music - it turned out to be my speaker stands as they weren't filled. With the test tone on, grab hold of anything nearby that is metal and see if it stops.

 

[duaplex]

I think you are right about the test tones they are different. I have tried to hold onto things, but I am 100% sure its the sub now. So I have ordered a QED signature sub cable, lets see if that will make a difference. I know it probably wont, but its one option for now.

Also I don't know about you David but I find the volume on the PV1 needs to be turned up for Analogue connections, its not as loud. If I leave the volume half way it's underwhelming and needs to be up to around the 2 o'clock mark to start having impact.

But the music side of things cant be faulted, especially darkside of the moon on SACD!

 

[michael hoy]

Hi Duaplex,

Not noticed the lower volume of the sub with my 85 / Apex combo, I do notice a general volume level difference btween HDMI and stereo analogue.

Have to increase for the latter.