I live in an apartment in NYC and am considering using X-10 to control lighting (current using some Lutron IR controlled dimmers). I also have my high end audio reference system on the same electrical line. Do I have to worry about the X-10 degrading the AC current to my audio system or causing any other sort of interference?

No, you need to worry about the A/V equipment causeing noise which interferes with the X10 equipment. That can be solved with a few plug-in filters.

The only interference that you 'might' get in the other direction is on AM radios but then that's only when the radio is very close to the X10 transmitter and it only lasts for the duration of each X10 signal (about 3/4 sec)

I get interference on AM radio anytime a lamp module is on. Not just at the moment of signal. Also I get a pulse for every cycle of the TW-523 on AM which is about every 3 to 5 seconds.

The AM radio noise is common, most dimmers produce this noise, not just x10.
To the guy with the 'reference' system....i'm assuming you paid a lot for it...why are you worried about powerline noise somehow making it through the power supply and into the audio circuits....not even a cheap amp will do that... or are you worried you paid too much for crappy equipment with inferior power supplies?

Easy Robby, I think Dan is just reacting to the "audiophile" views that you need to have very clean AC power into your components or it will somehow degrade their performance. They sell a heck of a lot of "Quiet Lines" and other tweaks so a lot of people must believe this.

All I can say is that I have a pretty decent audio system, later added some X-10 controls throughout the house and have noticed no effects on my audio system.

"They sell a heck of a lot of "Quiet Lines" and other tweaks so a lot of people must believe this."

A lot of people believe in God...doesn't mean it exists.


"All I can say is that I have a pretty decent audio system, later added some X-10 controls throughout the house and have noticed no effects on my audio system."

This is because the power supplies in your equipment have been properly designed and are doing their jobs....this shouldn't be a surprise, it should be expected.

I don't disagree with you robby. Just thought your sarcastic remarks sounded a little snobbish. Like in all those "expensive cables vs. cheap cables" threads on audio boards. Those people get crazy into it.