Help...save me from the web of W.....

[saurabh]

Okay, this is about interference from the various parts of the HTS, primarily the web of wires. The problem that I see is a low "Hum noise" in the TV speakers if the DVD player (which is right below the TV, its a HTIB) is ON/in standby mode. The moment I pull the plug for the DVD player, the "hum" from the TV is gone. So I figured its interference!!!, now I am looking at four types of wires around the system.

1) Electrical
2) Speaker Cables
3) Cable TV wire
4) FM Antennae wire

As usual the wires are longer than required and I have used a tie to manage them and keep them bundled. Also except for the Cable TV wire I cannot trim the other wires, since cos of being a HTIB, the wires have moulded connectors on both ends, which I dont want to fiddle with. I know that "Idealy" the wires if crossing each other should cross as right angles, but its not possible to do that(we are not loooking at two wires here but a lot of them) and I am looking to find a more practical and effective solution than the lab calculations and theory involved.

Has anyone faced similar situation........has a solution ?????...heeeelp

 

[jaxvon]

All of your signal cables should be fine together, even your speaker cables, thought may want to give these a little more space. The only thing you need to cross at 90 degrees are power cables and other cables. so, since you only have a few power cables, I'd just try to bundle them and cross the rest of the wires at 90 degrees.

 

[saurabh]

Will shortening the cable TV wire help......(thats the only cable i can trim) and also how to manage the other signal cables, bundle them together or seperately???? (if that would help)

 

[jaxvon]

The main objective is to keep the signal cables (speaker cables included here) away from the power cables and if need be, only cross them at 90 degrees. Your cables should also be only as long as they need to be, but not so short that they create tension. Just long enough to make the connection while laying down flat.

You can bundle your signal cables together, although I wouldn't put your speaker cables next to your other signal cables. You can run speaker cables in bundles though.

Wire ties are your friends!

 

[Ethan Winer]

Saurab,

> So I figured its interference!!! <

Doubtful, it's much more likely to be a ground loop. If you shift the wires around physically and the hum level changes, that implies interference. But if unplugging things makes the hum come and go, that's definitely the sign of a ground loop.

--Ethan

 

[saurabh]

yeah right, i placed my power cables away from the signal ones and the hum went away. BTW, both the TV and DVD operate with 2 pin plugs so the ground loops occuring cos the difference in the earthing seems unlikely.