Need help with my speaker audio

[noler]

There is a static sound coming from my speaker when playing music at low volume when connected to my computer using aux cable. I tried connecting my speaker through bluetooth to my phone and didn't hear the static sound when playing music on low volume. But when I connected my speaker to my phone using the same aux cable the static sound came back when playing music at low volume. Is this a problem with my speaker's aux port, my aux cable, or is it the speaker itself? At first I thought the problem was with my sound card so I bought an external sound card but that doesn't seem to make a difference, my speaker still makes static noise when playing at low volume. Please help.

[danomicar]

I'd start out with replacing your aux cable.