MW
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Posts: 13
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Post by MW on Jan 13, 2017 23:48:45 GMT
I tried disconnecting the second ground cable (right side), made no difference. Still baffled and not too happy with it... :/
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Post by arnyk on Jan 15, 2017 16:01:31 GMT
Many people seem to suggest replacing the fan switch, but I don't believe that's the issue, being as the same popping noise happens regardless of whether or not I turn the fan off via the light switch or the chain on the fan itself, and the fact that other high power devices cause popping as well. This appears to be an example of risky belief that there can only be one cause of the popping, so the presence of two causes of the popping indicates that neither of them are the guilty party. Obviously, you can have more than one source of the noise, so the belief is unreliable. Rather, there are for sure to be at least three causes for the popping, and there can easily be more. The popping is due to: (1) A source of the noise signal. Turning AC power on and off with a switch can be a noise source. (2) The means of transmission of the noise signal (3) A device that picks up the noise signal and converts it into sound. All 3 contributors must exist for this problem to exist. Removing any one of the three will eliminate or at least reduce the popping. The source of the noise signal is often the contacts of power switches which arc when the power is applied or removed, and create a short burst of RF energy. Every switch does this, it is all just a matter of degree. As switches wear they tend to produce larger and longer bursts of noise. Obviously, some start out being more or less noisy. The ideal switch would produce a very short, small burst of noise. If the power is applied or removed slowly and progressively, or very quickly, the noise may not be noticeable. The means of transmission is wire or air. Any signal or power cable can potentially carry the burst of RF energy, and so can the air or a vacuum. A powered loudspeaker or amplifier attached to a speaker can be the device that picks up the noise and converts it into sound. The power cord, the speaker cables, or the input signal cable can act like an antenna and pick up the noise and introduce it into the circuitry of the amplifier.
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Post by sal1950 on Jan 15, 2017 16:17:12 GMT
I tried disconnecting the second ground cable (right side), made no difference. Still baffled and not too happy with it... :/ On my system I get a momentary dropout from my DAC occasionally when a light switch is thrown or the HACV unit starts up, no pop just a instant of silence. Maybe it's time to just say, "Oh Well" and not fret over it.
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MW
New Member
Posts: 13
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Post by MW on Jan 15, 2017 18:48:16 GMT
I tried disconnecting the second ground cable (right side), made no difference. Still baffled and not too happy with it... :/ On my system I get a momentary dropout from my DAC occasionally when a light switch is thrown or the HACV unit starts up, no pop just a instant of silence. Maybe it's time to just say, "Oh Well" and not fret over it. Perhaps so. I've got a couple other things I'm going to try, but if nothing works, then I guess I'll just have to live with it. I'll probably be returning the filter too, oh well.
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Post by rock on Jan 16, 2017 3:41:22 GMT
Sorry if you said you did this already but, did you ever check your wiring? If your neutral is switched (swapped) with the hot, the system will function but can cause noise problems. Also check that the ground and neutral make "home runs" to the load center and are only common there.
Cheers, Rock
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Post by Ethan Winer on Jan 16, 2017 15:07:49 GMT
Where did you connect the filter? It should be inline with either the offending device only, or everything else but not the offending device.
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MW
New Member
Posts: 13
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Post by MW on Jan 16, 2017 17:32:58 GMT
Where did you connect the filter? It should be inline with either the offending device only, or everything else but not the offending device. I wired it to a power strip, plugged that into the wall, and plugged my speakers into the power strip.
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Post by arnyk on Jan 17, 2017 17:56:44 GMT
Sorry if you said you did this already but, did you ever check your wiring? If your neutral is switched (swapped) with the hot, the system will function but can cause noise problems. Also check that the ground and neutral make "home runs" to the load center and are only common there. Cheers, Rock Here is a link to the preferred professional tester for that problem (widely used by electrical inspectors)\ link to $5 tester
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Post by Ethan Winer on Jan 23, 2017 22:07:53 GMT
I wired it to a power strip, plugged that into the wall, and plugged my speakers into the power strip. You need to plug all your related audio gear into the protected power strip, not just powered speakers.
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MW
New Member
Posts: 13
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Post by MW on Jan 24, 2017 0:52:15 GMT
I wired it to a power strip, plugged that into the wall, and plugged my speakers into the power strip. You need to plug all your related audio gear into the protected power strip, not just powered speakers. The whole speaker setup is powered via one plug. It pops no matter if there is an audio source (iPhone) connected or not.
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Post by Ethan Winer on Jan 25, 2017 18:57:12 GMT
Well shucks, I'm out of ideas.
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Post by Me on Jan 25, 2017 20:11:03 GMT
Your pop on the speakers can be coming from a multitude of places within your home or immediate neighbours. Anything with a switch can do it, or anything producing a ton of noise (electrical noise that is) You probably have fridge - freezer - household heating thermostat, hot water thermostats the list is endless. My neighbours lawnmower used to drive my hifi insane (until he blew the mower up) Hairdryers are another case in point, as are lighting dimmers..
You have the choice of trying every switched item in the house - turning them off one by one until you find the fault, or have some heavy duty filtering which could easily ruin the music.
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MW
New Member
Posts: 13
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Post by MW on Jan 25, 2017 20:35:17 GMT
Well shucks, I'm out of ideas. As am I, thanks anyway. I've tried a UPS, surge protectors, different outlets, extension cords, etc. etc. A Furman power conditioner is on the way and will be my last attempt, if that doesn't work then I'll just have to deal with it I guess.
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Post by rock on Jan 26, 2017 13:34:31 GMT
Sorry to keep beating the same drum but I'm still thinking it's something with your house wiring. Instead of buying all those filters, if you have not done so already, why not look for an electrician who can verify your house wiring is NOT the problem.
In recording studios and other buildings where the power needs to be electrically "quiet", a star grounding system is used. Neutrals and grounds fan out from a central point which is bonded to a reliable "earth" ground. In regular houses, the neutral can daisy chain all over the house to save money on wire at the expense of a little potential electrical noise. Another thing that might be the cause is if the earth ground point bonding has somehow failed. I don't know if things like this are your problem but I do KNOW weird stuff can happen with house wiring even when the power seems to be fine and all the lights etc. turn on like you'd expect.
You can actually check your wiring yourself if you are comfortable opening up your breaker box and poking around in there and know how to use a DVM to "ring" out the wires and see what wire goes where without electrocuting yourself.
If you do hire an electrician, make sure he's knowledgeable about troubleshooting problems involving electrical noise like you have.
And as Arny pointed out, the noise pulse can also be transmitted through the air (or vacuum) like a radio signal.
Cheers, Rock
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Post by pingpangpong on Sept 13, 2018 21:40:04 GMT
Im guessing MW has fixed his problem by now, but for anybody else having proplems with popping speakers, this is what i found......I had popping speakers everytime a vacuum/hoover was switched on, they were a pair of tannoy reveals with a samson 170 servo amplifier. when I finally built my new control room and live room in the same house, i had a new feed running to a new consumer unit, and split the control room and live room on individual rings, there wasn't any popping after that....even if the vacuum/hoover was switched on in the new live room it resulted in no popping from the speakers in the new control room.......so this isn't an understanding of why this happens, but what did happened when I built my new rooms....where i live now i use power regulators for all my gear also...weather these would have helped my situation back then i have no idea.....
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