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In Reply to: RE: computer switch on noise and esls posted by kentaja on August 02, 2016 at 20:06:05
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.
Follow Ups:
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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