| jim bailey |
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Reply with quote | #1 |
I am having a noise problem. The source of the noise is a dimmer switch. I am certain of this because the noise I hear coming out of the speakers goes away when the dimmer is off and varies with any change in the dimmer setting.
I have a P/S Audio Power Station Premier that is connected to a dedicated 20 amp circuit that supplies the OTL, pre and CDP. The dimmer switch is on a different circuit. Given the Power Station and the dedicated circuit I am both surprised and disappointed by the noise problem.
The dimmer is in the same room with the my system. Could this be an RFI problem rather than a power line problem? Any recommendations would be appreciated.
Thanks,
Jim Bailey
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| Bruce Rozenblit |
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Reply with quote | #2 |
It very well may be RFI. I would investigate getting a higher quality dimmer.
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| Michael Visser |
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Reply with quote | #3 |
Hello,
I may be talking through my hat, again, but
is it possible that a ferrite bead on one or both
legs of the dimmer would make some difference?
Yours, M. V.
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| kevmosmith |
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Reply with quote | #4 |
Hi Jim -
I had the same thing. It is a little frustrating. I switched out the dimmer and that helped a little, used the ferrite beads (on the power cords and interconnects, but didn't think about the leads on the dimmer) and that seemed to help a little too.
What worked the best for me was moving the equipment/cords around. My amps had been on top of an entertainment center, probably 5 feet of the ground. I moved them inside the cabinet (a foot or two off of the ground) and that seemed to take care of it. This could have been moving the cords as much as the unit.
Do you get the noise with nothing (preamp) hooked up to the amp? If not, you may want to go upstream a bit and try to tackle it there.
Hang in there and be creative and you will get it eliminated. There is some pretty good help on the internet as well.
Good luck.
Kevin
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| jim bailey |
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Reply with quote | #5 |
Thanks for the help.
So far I have reduced the noise level, but not completely eliminated it.
Actually I have 2 dimmer circuits. One has track lighting, this circuit is the worst offender. Both have 6 bulbs.
I replaced the dimmers with higher quality switches, ones with RFI abatement built in. This helped some.
I also reduced to wattage from 60 watt bulbs to 15 watt for the track circuit and to 25 watt for the other. This helped. My theory was less current flowing would reduce the intensity of the generated RFI.
Coincidentally I swapped speaker cables during all of this. The new ones seemed to be quieter. Maybe just my imagination.
Getting there. Thanks again and best regards,
Jim
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