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Post by MikeMusic on Mar 15, 2018 18:21:55 GMT
Assume close to the system on kit that could be considered noisy.
For me that seems to be the items on the same circuit as the system, portable phone, Amazon Firestick, Freeview box for starters.
Just one per lead and at the socket end or the kit end ?
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Post by Stratmangler on Mar 15, 2018 18:37:11 GMT
Everywhere.
I have them all over the place, but none of them on the audio gear.
Just about everywhere I have trailing gang boards, so the ferrite is placed at the board end.
Where there are leadout cables wrap them around and through a couple of times.
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Post by MikeMusic on Mar 15, 2018 18:41:45 GMT
Thanks
One per lead ?
Socket or kit end ?
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Post by TheMooN on Mar 15, 2018 19:04:21 GMT
On Ferrite jumpers...Obvious,  |
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Post by Stratmangler on Mar 15, 2018 23:00:49 GMT
Thanks One per lead ? Socket or kit end ? Get creative  |
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Post by zippy on Mar 16, 2018 9:06:35 GMT
My streamer came with a ferrite ring on the streamer end of the ethernet cable.
As far as I can tell, it has no effect whatsoever.
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Post by Greg on Mar 16, 2018 9:20:08 GMT
My streamer came with a ferrite ring on the streamer end of the ethernet cable. As far as I can tell, it has no effect whatsoever. A man took a train every day to work. Every morning he would buy a newspaper and once read, would tear every page into small squares and toss them out of the train window. A fellow commuter observed this behaviour for a couple of weeks and eventually had to ask why he did it. The man replied, “To keep the elephants away.” The commuter said, “But there are no elephants.” “Exactly” was the reply  |
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Post by MikeMusic on Mar 16, 2018 10:55:47 GMT
My streamer came with a ferrite ring on the streamer end of the ethernet cable. As far as I can tell, it has no effect whatsoever. Wasn't aligned properly with the planets I forked out 99p to have a go. Others here seem keen, close to essential Will report bac |
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Post by MikeMusic on Mar 16, 2018 10:57:11 GMT
Thanks One per lead ? Socket or kit end ? Get creative I want to fit them in the likeliest place, test and move on. Testing a million configurations not for me |
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Post by DaveC on Mar 16, 2018 13:23:08 GMT
First question is : do you need them ?
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Post by MikeMusic on Mar 16, 2018 15:33:57 GMT
No idea. Mains improvements have worked well in this system
99p is worth a punt.
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Post by DaveC on Mar 16, 2018 19:14:58 GMT
No idea. Mains improvements have worked well in this system OK, normally they are a problem solving device and that is where my experience lies. I can't see them making an improvement at all otherwise, but YMMV. Dave |
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Post by MartinT on Mar 17, 2018 0:31:16 GMT
The biggest noise creators in your house are in the form of SMPS - pretty much every device from a Sky Box to a Router to a telephone base station and all manner of chargers. Place the snap-choke filter on the power cable close to the device/charger itself to prevent it from radiating both down the line and air-borne. For wall-warts, you'll need a 13A style inline filter, somewhat more expensive (or plug them into a 4-way strip and put a snap choke on that cable). You cannot have too many chokes and they're pretty cheap so buy a selection of sizes and have at it.
The cumulative effect is that the overall household self-produced and incoming noise will reduce dramatically. If your system doesn't respond by sounding better it must be 'special'.
Note: if you're using powerline type ethernet over mains, forget it. You'll either stuff the transmission rates or you're producing so much noise that all you can do is suppress at the hi-fi system end.
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Post by Stratmangler on Mar 17, 2018 1:03:46 GMT
The biggest noise creators in your house are in the form of SMPS - pretty much every device from a Sky Box to a Router to a telephone base station and all manner of chargers. Place the snap-choke filter on the power cable close to the device/charger itself to prevent it from radiating both down the line and air-borne. For wall-warts, you'll need a 13A style inline filter, somewhat more expensive (or plug them into a 4-way strip and put a snap choke on that cable). You cannot have too many chokes and they're pretty cheap so buy a selection of sizes and have at it. The cumulative effect is that the overall household self-produced and incoming noise will reduce dramatically. If your system doesn't respond by sounding better it must be 'special'. Note: if you're using powerline type ethernet over mains, forget it. You'll either stuff the transmission rates or you're producing so much noise that all you can do is suppress at the hi-fi system end. I started trying to type something similar, but lost the will to live in the process. I was blind to the sheer numbers of SMPS that have proliferated at home - once I was aware of the size of the issue I had to do something, and that something was surprisingly painless to administer. The gains from cleaning the switching noise pollution generated by SMPS was quite profound, and readily audible. And all I did was stick ferrite chokes on power cables to suppress the general switching noise. |
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Post by MikeMusic on Mar 17, 2018 10:43:09 GMT
The biggest noise creators in your house are in the form of SMPS - pretty much every device from a Sky Box to a Router to a telephone base station and all manner of chargers. Place the snap-choke filter on the power cable close to the device/charger itself to prevent it from radiating both down the line and air-borne. For wall-warts, you'll need a 13A style inline filter, somewhat more expensive (or plug them into a 4-way strip and put a snap choke on that cable). You cannot have too many chokes and they're pretty cheap so buy a selection of sizes and have at it. The cumulative effect is that the overall household self-produced and incoming noise will reduce dramatically. If your system doesn't respond by sounding better it must be 'special'. Note: if you're using powerline type ethernet over mains, forget it. You'll either stuff the transmission rates or you're producing so much noise that all you can do is suppress at the hi-fi system end. Thanks Martin. Will pick my targets, compare, plug in the 5 I have and listen again. |
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Post by Stratmangler on Mar 17, 2018 11:38:20 GMT
Most efficient placement. Reduces switching noise being injected back onto the mains.  For individual devices. Reduces switching noise getting into an individual device.  |
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Post by Deleted on Mar 17, 2018 12:26:29 GMT
Note: if you're using powerline type ethernet over mains, forget it. You'll either stuff the transmission rates or you're producing so much noise that all you can do is suppress at the hi-fi system end. As you probably remember I use these for my headphone system. I did find that when I unplugged them, after you recommended it on a previous thread, there was an audible difference on the main system, but why is that? Why are they so bad? |
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Post by MikeMusic on Mar 17, 2018 12:26:55 GMT
Thanks
For a phone with a wall wart.. one at each end ?
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Post by Stratmangler on Mar 17, 2018 12:32:42 GMT
Note: if you're using powerline type ethernet over mains, forget it. You'll either stuff the transmission rates or you're producing so much noise that all you can do is suppress at the hi-fi system end. As you probably remember I use these for my headphone system. I did find that when I unplugged them, after you recommended it on a previous thread, there was an audible difference on the main system, but why is that? Why are they so bad? The powerline adapters work by generating very high frequency switching noise and overlaying it on the mains. Just because the frequencies involved are way outside of the audio band does not mean that it can't affect audio equipment. |
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Post by Stratmangler on Mar 17, 2018 12:45:24 GMT
Thanks For a phone with a wall wart.. one at each end ? Why? The phone will work fine without, and it's the endpoint. If the endpoint was something in your sound system then you'd want to be looking at getting rid of as much switching noise as is possible. Most phones have a wall wart. If it's straight into a socket then you're going to struggle. Plug the SMPS for the phone into a power bar, and stick a ferrite onto the bar where the power cable enters it. That suppress the switching noise getting back onto the mains. You don't need one on the cable exiting the wall wart, because the switching noise will be affecting something inconsequential. The point of the exercise is to suppress switching noise on the mains. |
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