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Cable Asylum Interconnects, speaker wire, power cords. Ask the Cable Guys. |
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Cable Asylum Interconnects, speaker wire, power cords. Ask the Cable Guys. |
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In Reply to: Sounds like what i hear. posted by ArdRi on April 9, 2007 at 13:48:31:
A good outlet, even if your AC circuit is not dedicated, can make a difference in a quiet environment. In a noisy (in the electrical sense) environment, a good outlet might admit more of the noise that causes trouble.If your computer has to be on, try operating it from a UPS device that has passive EMI/RFI filtering, then add a parallel filter such as the Hammond 193L choke to that circuit.
Look for other possible noise sources within your house, even if they are on different AC circuits. Try the experiment of turning them off and unplugging them while listening to a good recording. Some candidate noise sources are digital video recorders (TiVO and the like), microwave ovens with sophisticated control menus, anything with a small and light-weight external power supply (these are likely to be switching supplies), and anything with a fluorescent display.
These noise sources put electrical noise onto the AC power wiring, including the safety-earth ("ground"). Cheap surge protector power strips that include EMI/RFI filters can reduce the normal-mode noise, but still pollute the AC safety-earth. Adding a pair of anti-parallel rectifier diodes in the safety-earth wiring will further isolate the noise sources from your audio system. This is not for the newbie to undertake, though, as it involves something that affects safety.
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Follow Ups
- Some things that can help. - Al Sekela 12:36:35 04/10/07 (0)
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