I just bought Samson Resolv SE5 speakers for my home pc/amature home studio. I have very annoying hissing sound and scratches whenever they are plugged into the pc. My sound card is ESI Maya44 XTE, which has unbalanced stereo output large jack.
I tried connecting with a Y cable, one stereo to two monos (left/right). but the speakers make the hissing sound and some scratches.
I tried with from stereo jack to RCA to the speakers, again unbalanced and the noise persists. The same setup when connected to another device like my cellphone works without noise which makes me think its some grounding issue or something, and proves that the new speakers are not broken. To add up to that, the noise does not appear when the pc is booting, but appears when it is idle or just browsing , playing music etc.
What I have not tried is Y cable, stereo to two stereo jacks, which according to the speakers manual is for balanced signals. But I am not sure its a good idea since the card says explicitly that the output is unbalanced.
links with the manuals
Any thoughts are really appreciated.
EDIT: problem does NOT appear by using stereo small jack from a laptop, to RCA at the speakers. And there can be no lousier output than from a cheep onboard from a laptop.