In Reply to: RE: The distinction is between RF noise and audio band noise. posted by Ted Smith on June 1, 2008 at 20:14:00:
Most commercial CDs have less than the maximum resolution allowed by the format. A few reveal increasing recorded details with improvements in noise reduction techniques in highly resolving systems. One of these techniques involves how the cable shields are damped. Incorrectly damped shields will harm the signal, and do more proportional harm in highly resolving systems than in more modest systems.
The problem is that these improvements are subtle and easily confounded with the basic tonal balance. As I wrote above, some degree of RF noise pollution sounds like added sparkle, air, and punch. Removing it makes the system sound dull. The additional true detail only becomes apparent after prolonged listening. If the system's tonal balance had been selected based on some amount of RF noise, the system will remain dull with the noise removed. Rebalance may be expensive, as it may require new speakers, etc.
I realize there are pleasing and highly resolving systems that use unshielded cables. My assertion is that they could be even more resolving (and more pleasing, if such resolution is to the taste of the listener) if the cables were properly shielded and damped. Simply adding shields without attention to the damping will not, in my understanding of the issues, guarantee increased satisfaction, and will likely decrease satisfaction. We nearly agree on your comment, "if you can't hear how a shield deleteriously affects your audio your system isn't very revealing," but I would only add 'an undamped' to the word 'shield.'
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Follow Ups
- No, you read me correctly the first time. - Al Sekela 21:35:33 06/01/08 (11)
- OK, so how do you damp a shield? - robfoto@sbcglobal.net 21:46:38 06/05/08 (4)
- You extract energy from the electric or magnetic fields. - Al Sekela 08:38:51 06/06/08 (3)
- Carbon? - robfoto@sbcglobal.net 18:05:26 06/11/08 (1)
- RE: Carbon? - Ted Smith 18:46:38 06/11/08 (0)
- Tease! :-)) nt - andyr 03:04:12 06/07/08 (0)
- Also... - E-Stat 10:07:15 06/03/08 (1)
- Exactly. - Al Sekela 13:28:47 06/03/08 (0)
- :) - Ted Smith 22:47:22 06/01/08 (3)
- Properly-built shielded cables for audio - Al Sekela 09:21:10 06/02/08 (2)
- RE: Properly-built shielded cables for audio - Ted Smith 09:36:23 06/02/08 (1)
- No, sorry. (nt) - Al Sekela 13:57:24 06/05/08 (0)