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I had a dedicated line installed last month and took comfort in believing I had helped isolate my system from the noise possibly created by the long string of daisy-chained outlets, ceiling fan, and light dimmers which were all on the previous circuit.
I got up to change a CD while listening the other night. I intended to turn on the light, since tripping over the snake pit of speaker wire and interconnects can be embarrassing.
I accidentally flipped the switch for the ceiling fan instead, and heard a pop come through the speakers. I guess I thought the dedicated line would prevent things like this. Am I mistaken?
Follow Ups:
You might try changing the switch out with a new one. A descent medium spec grade switch will cost around $3.50 or more. To be on the safe side buy a switch with a 20 amp rating. The make or break contact snap action mechanism may be faster than that of a 15 amp rated switch.
Also when turning a switch on or off, always flip the switch quickly.
Your dedicated line (singlular) provides some isolation from the problems associated with the typical daisy-chain wiring method on convenience circuits. There are no upstream crappy contacts in series with your audio system, for example. There are no upstream noisy appliances. A single dedicated line will still allow the audio system components to interact through their individual power supply noises, however.
A dedicated line will not protect your audio system from broadcast RF energy, which can come from noisy switching of high-current appliances. What you heard is not a problem, and is to be expected from the proximity of the fan wiring.
You have a great way of explaining things, and do it in a way so as not to talk down to people with less experience in such matters.
Your style as well as your expertise is much appreciated!
...I have dedicated circuits for my equipment.
I also have rheostat light dimmers in my room on the regular house circuits and they do not interfere.
I can see the lights dim when the washer or refrigerator come on, but it doesn't seem to effect the sound.
I still say a dedicated circuit or two is the biggest bang/improvement you can get for your buck.
Clearly you were. Lotsa 'stuff' in Audio Weenie world does not work as advertised. Especially the DIY teeks :-)
Possibly/likely the Fan motor made some RFI noise that yr Electronics picked up and amplified.. may not be the Power wires themselves.
The Emporer has no clothes.
... Is there something somewhere that says a dedicated line will cure all the ills in the world?
A dedicated line will improve things to whatever extent it does so.
The wiring in my house is different to my next door neighbour whose wiring is different to the house behind him whose wiring is... and so on.
Every case is different and the changes in any given situation will be different and often completely unpredictably so from any other situation.
All you can say you will get an improvement.
I would suggest that if your cabling is such a mess that it needs to be properly dressed and that that will make another improvement.
If your fan makes a noise then leave it off when you can.
DIY is where things do work as talked about but to varying degrees.
It's the manufacturers' world where you need to spend the big bucks to get any improvement and THAT is where it rarely justifies itself.
Dave, thanks for your reply. I wasn't sure what to expect from a dedicated line, and that is why I posted. From your post and others I now know that what I heard is perfectly within the realm of "normal".
I must admit I took umbrage for a few seconds when you suggested my "cabling is such a mess" until I realized that I referred to it as a snake pit that I could trip over.
In my attempt to write a bit colorfully I exaggerated. The speaker wires are on the floor, and a pair of interconnects is as well, since they lead to the amp between the speakers. The real reason I turn the light on before approaching the system is so that I don't step on the wires, which can't be good for them.
It was just a light hearted comment about how tweaking never stops once you get the bug.
Sometimes you can be so overwhelmed by an improvement that it seems to be the cure all for everything.
Sometimes you can expect one tweak to make things perfect.
Nothing does that.
All or at least many of the tweaks talked about here can produce good changes. How much? Very system dependent in my opinion.
Votes for best tweak really confuse the issue for me.
I like curry, you prefer spaghetti. Big deal!
Both are good food.
Perhaps in electronics expert wannabe weenie world there is advertsing which implies dedicated lines necessarily offer some type of RF immunity over something else but then people who have actually run testing know different , huh? ;)
I say the OP's symptom is much more likely to be caused by RF energy radiating from arcing in the light switch contact bouncing than from the motor itself but hey what do I know? I always thought that the advertised benefits of dedicated lines was reduced AC service line losses and not RF immunity. Duh.
I say the OP's symptom is much more likely to be caused by RF energy radiating from arcing in the light switch contact bouncing than from the motor itself but hey what do I know?
I agree, probably a cheap .79 cent construction grade snap toggle switch.
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