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Post by MartinT on Feb 5, 2018 17:23:22 GMT
You're making assumptions again, and it's from not having the experience of owning one.
1) I don't claim that they don't know how it works, that would be impossible since they designed it. I'm suggesting that the marketing department have played loose with the description of how it works.
2) It still works even with DC present and is better than using raw power. What I'm saying is that first eliminating DC makes it perform (and ergo the system sound) better.
3) They could indeed include a DC blocker but perhaps they didn't want the component count or cost to go up any further, especially as not everyone suffers from DC on their power.
Since David Brook sells them, and is well aware that they can sound better with a DC blocker, perhaps he has told them already?
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Post by Slinger on Feb 17, 2018 18:15:47 GMT
For those of you with noisy mains, this may well be another cause...  |
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Post by Deleted on Feb 17, 2018 22:06:46 GMT
Seen it before, Paul and it’s still funny:)
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Post by sq225917 on Feb 18, 2018 18:44:01 GMT
AIUI the PS Audio Powerstations aren't regenerators in the literal sense, they sample the incoming mains and then apply error correction to the signal to restore it so it matches a reference signal. Same as a feedback loop in any other amplifier.
I tend to think of regenerators as just being an AC to DC convertor and then back to Ac at the main frequency, little more than a fixed output amplifier, generally inefficient and massive. This isn't the PS Audio way.
So saying that they don't contain a DC blocker is a little wide of the mark. Yes they may not contain a simple DC blocking circuit ( a few diodes and caps), but they can correct for DC offset on the rail by other means.
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Post by MartinT on Feb 18, 2018 19:33:59 GMT
Agreed, Simon. We've described the P10 in detail here and in another thread. I've called it a 'waveform repairer' as that's what it does.
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Post by Deleted on Feb 18, 2018 21:49:11 GMT
Martin the problem is the saturation of the core when DC is present by pushing the B/H curve to the limit cause physic hum and modulated harmonic on the AC secondary. I made this device at Naim audio to test this on there transformer and before that at Inca Tech the transformers in the Claymore were wound 20% more turns to attempt to cure this problem. So make one of these I did two one is at Naim and the other I took to Prague were Naim have special custom made transformers manufactured.  |
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Post by MartinT on Feb 18, 2018 22:27:57 GMT
A bit late but thanks for that, Colin. I'm repeating myself but the P10 has a lot of sensitive clock generation and such as well as the on the fly amplification for repairing the waveform. This would all be fed from a low voltage power supply. It's this, I surmise, that is sensitive to DC on the mains input.
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Post by scotty38 on Feb 19, 2018 0:00:32 GMT
Wouldn't the sensitive electronics be running on DC produced on the secondary side of the transformer? As far as I understand it it's the primary that has the issue with dc on the mains input. Happy to be corrected though so I can look elsewhere for my issue....
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Post by MartinT on Feb 19, 2018 6:58:19 GMT
Wouldn't the sensitive electronics be running on DC produced on the secondary side of the transformer? As far as I understand it it's the primary that has the issue with dc on the mains input. Happy to be corrected though so I can look elsewhere for my issue.... Yes, of course, but it's the potential primary transformer saturation that can cause power rails on the secondary to be affected. Otherwise DC would not affect any equipment since almost all use a transformer. |
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