Yeah I like to move things around a lot.
I'll go through it step by step.
1. Build the HTPC (the same pc discussed in this topic). Plug in 2.1 speakers which are on the same desk of the PC. Everything worked fine, no interference.
2. Decide to move the HTPC into the living room. Exactly the same setup as before, just moved to a different location and then I had interference that seemed to be affected by what was showing on the monitor. Unplugged the monitor and that didn't make a difference.
3. Tv came, so I moved the 2.1 speakers over to the TV, plugged them into the TV's headphone jack and connected the PC to the TV via HDMI. Speakers had a constant loud hum which again seemed to be affected by what was on the TV (later realized whites would make it worse, darks would make it better).
4. I then unplugged the speakers from the TV's headphone jack and used a extension cable to reach across the room to plug it into the PC (speakers are still located at the TV) and now there's no interference.
Obviously the problems are due to cheap speakers which I'll ultimately upgrade. But ideally for now I'd like to be able to plug the speakers into the TV so the over the air channels, the PC via HDMI and PS3 could all use them.
I see that the interference when they were at and plugged into the PC was a proximity issue. This doesn't appear to be the same when they are at and plugged into the TV because I even went as far as to remove the speakers from the TV, set them up in the middle of the living room floor and plug them into the TV and I still had exactly the same level of distortion.
I'll go through it step by step.
1. Build the HTPC (the same pc discussed in this topic). Plug in 2.1 speakers which are on the same desk of the PC. Everything worked fine, no interference.
2. Decide to move the HTPC into the living room. Exactly the same setup as before, just moved to a different location and then I had interference that seemed to be affected by what was showing on the monitor. Unplugged the monitor and that didn't make a difference.
3. Tv came, so I moved the 2.1 speakers over to the TV, plugged them into the TV's headphone jack and connected the PC to the TV via HDMI. Speakers had a constant loud hum which again seemed to be affected by what was on the TV (later realized whites would make it worse, darks would make it better).
4. I then unplugged the speakers from the TV's headphone jack and used a extension cable to reach across the room to plug it into the PC (speakers are still located at the TV) and now there's no interference.
Obviously the problems are due to cheap speakers which I'll ultimately upgrade. But ideally for now I'd like to be able to plug the speakers into the TV so the over the air channels, the PC via HDMI and PS3 could all use them.
I see that the interference when they were at and plugged into the PC was a proximity issue. This doesn't appear to be the same when they are at and plugged into the TV because I even went as far as to remove the speakers from the TV, set them up in the middle of the living room floor and plug them into the TV and I still had exactly the same level of distortion.