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Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
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Critic's Corner Discuss a review. Provide constructive feedback. Talk to the industry. |
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In Reply to: You're both confusin' me... posted by Jim Austin on January 23, 2007 at 04:19:28:
Charles Hansen does not seem to have trouble making well-received gear that does not need the AC safety-earth connection.My AC installation is closer to your ideal than your condo examples, but I've determined that my Wadia 861 delivers better performance if I take measures to keep the RF noise out of its grounded AC supply. The safety-earth is part of the issue.
Surely it cannot be that hard to distinguish short from long wires with respect to the frequency of the noise. The only hard part for most folks is to accept that audio gear suffers from noise through the UHF band and beyond. Whether your AC installation is closer to ideal than non-ideal, the quality of the safety-earth wiring only affects lower-frequency noise. In your condo example, non-grounded equipment would have an inherent advantage for rejecting the lower-frequency noise that is likely present on your safety-earth wiring. I don't see how it would have a disadvantage compared to grounded equipment in the ideal case.
If you have grounded equipment, have you investigated an isolation transformer for your audio setup in your condo? A transformer removes the noise present between the safety-earth and AC neutral by shorting the secondary neutral lead to the safety-earth at the transformer. It also filters normal-mode noise through core losses. This is legal and does not require rewiring your building. The downside with most transformers is their limited current delivery capacity. The Acrolink transformer is way over-built and performs well.
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Follow Ups
- I'd look at non-grounded for both ideal and real-world environments. - Al Sekela 11:47:50 01/23/07 (0)
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