THD In Light Bulbs

Audiozenology-If dedicated lines are used for the audio system, separate from the lighting electrical, will the dimmer still affect audio quality?  Leon

One thing to remember with anything that has THD is it only applies to audiophiles and power company managers. No one cares if their light bulb is a little bit dimmer than it is supposed to be or that your hairdrier could be more efficient if they put the most basic power reducing circuit instead of just one diode to block 1/2 of the sine wave.


The take home message is that after your dirty power component sucks out the small amount of the 60 Hz sine wave it needs what is left behind is a distorted non sine wave (dirty power). What is left behind in your lines plus the fresh supply of the good power coming from the generator is what your audio equipment gets. How far does the dirty power what is left over get? Theoretically it goes back into the grid where it gets averaged back in to everyone. But in reality it is worse the closer you get to the source. That is why people get dedicated power lines for audio but still claim they can hear when a neighbor is running a hairdrier down the street.

@c_avila1      

An incandescent light bulb is a purely resistance load. There is no noise.

 

Thank you jea48. That's good news.The consensus shows that incandescent lights may generate less noise compared to LED or no noise at all. 

@orthomead I have my stereo on two parallel 20amp lines with no other household devices.  Unfortunately I could still get some electrical feedback from other devices on different lines (when I turned on an LED light I got a slight music dropout, perhaps due to the router I was streaming music through?).  Eventually I got a power regenerator (an old Elgar as recommended by Atmasphere), put it on one of my lines, and that stopped the problem.