Hello. I don't know a lot in that kind of things so I'll try to be clear:
I recently got for my birthday a pair of Tannoy Reveal Active which I try to connect to my computer on my Xonar Xense soundcard. To do so, I use a Y cable with 2 jacks 6.5 that I plug in the monitors, and a jack 3.5 that I plug in the soundcard. Unfortunately, when I turn the monitors on I hear a distinct high pitch noise (not an acousting feedback).
My question is simple: what could produce that kind of interference? And what can I do to resolve the problem?
It does not do the same thing when I connect the monitors to my phone or mp3 player for instance, so I don't think it comes from the cable.
I did some research on the web, and it could be a problem with the electricity (and I think this is the most likely scenario, but then again I don't know a big deal) and the way things are plugged: my computer and the monitors are plugged to a power strip. I tried to plug the computer to an outlet on the wall and the monitors on other outlets, but it didn't change anything. I also found that something like that might help (don't know the name in english) and fix the interference in case of an electricity issue.
A friend of mine who knows a lot more than me in that field told me it could also be simply because of the setup, and that I shouldn't connect the monitors via a mini-jack, but I think it's the only way I can connect them to the Xonar Xense.
Please, if you don't quite understand what I said, ask me to clarify things (which is likely since english isn't my native language), don't leave me hanging!
Thanks a lot everyone!