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I have had this problem for some time (I sometimes rememeber to turn the pre amp vol down fortunately), that when I turn on the computer connested to my esl63 system,I get fizzing noises thru the speeakers. Does anyone know how to stop this?
Steve
Follow Ups:
I have two solutions to the problem 1st is to avoid turning the PC off entirely.
2nd is to use a noise harvester which is just two film caps - one between each pole and the ground. It may not take out all of the SMPS noise, but definitely reduces it. Also, a friend added chokes to all the pre and phono level devices in his setup, but then his attitude is that the are just boxes into which you put whatever you need.
Hi Steve,
I see you are in Canberra. You might like to try one of my hash filters between your PC and the wall socket - this will stop the crap which the SMPS powering your PC generates, from going back into the mains and affecting your Quads.
Send me a PM if you want a 'try B4 you buy' scenario.
Regards,
Andy
Yes.
Turn the volume all the way down or engage the mute switch. The computer system is causing some odd noise on start up and you would have the weird noise with any speaker/system you might be using.
Mute switches are nice features on a preamp. If you don't have one then your turn the volume down when switching sources or starting up sources.
I am having this problem with my new Marantz 14SA1 CD player.If the power amplifiers for my Stax loudspeakers are turned on, then turning on or off the Marantz makes a pretty loud click sound over the speakers. This is true even with the preamp set to mute and or the volume down all the way.
Actually the sound might instead be coming from the subwoofers, for which the power amplifier is rather near the Marantz. I haven't experimented with this (and don't want to).
Any clues? Is this dangerous, or just annoying?
By the way, the Marantz also plays SACD's, some of which sound really fantastic.
You might try different circuits- Mains circuits that is- if still a problem, then some sort of filtering.
PCs and 'rotating' equipment tend to throw lots of spurious noise (turntables rotate too slow to be considered in this scenario).
Happy Listening
Could be noise being kicked into the AC line.
If you are building your own noise filter, or adding a simple filter to the AC input of your preamp / power amp / etc be sure to use the RIGHT KIND OF CAPACITORS, for safety sake!
You need either "across the line" type X capacitors, and / or "line to ground" type Y capacitors. Read this=> https://www.rjcomponents.com/blog/14/across-the-line-and-line-to-ground-capacitors
You might consider something like this $60 Furman line filterl https://www.amazon.com/Furman-M-8X2-Outlet-Conditioner-Protector/dp/B003BQ91Y6/
ANOTHER GOOD IDEA is to plug the PC into a DIFFERENT LEG of your home AC system, if possible. Like, a wall socket that's on a different circuit breaker than the one your stereo is plugged into. This may help reduce or eliminate this issue.
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