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GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
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Old 8th August 2018, 06:30 PM   #51
analog_sa is offline analog_sa  Europe
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GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
Quote:
Originally Posted by Destroyer OS View Post

Then when you put Teflon capacitors in conditioners they sound different than PP counter parts.

It would be very strange if they sounded the same.

By different you mean worse?

I have an incomplete impression of teflon caps, based on only two makes, none of which were the universally praised Venhaus caps. For this reason i find it hard to generalise... perhaps some of them do sound good.
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Old 8th August 2018, 07:59 PM   #52
Destroyer OS is offline Destroyer OS  United States
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GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
That's a hard distinction to make. Usually if something sounds different and someone assumes it could be better, they just go with the assumption that it is indeed better. If they later remove said things or switch they may find their true preference. At least you see this all day in the audiophile world.

In a power conditioner the cap is attenuating noise from line to neutral. The properties of telfon vs PP in this application are not much different. The basic capacitance will dominate the situation. Where they differ is in 3HD distortion, and Teflon's SRF may be low enough to act like a short for some high frequencies. The odds that the Teflon isn't contributing 3HD and or exciting some frequencies by actings like short, are pretty remote if it sounds obviously audibly different. Why? Because unless you're comparing 10uf teflons to 0.01uf PPs then there just isn't a reason to account for the difference otherwise.
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Old 9th August 2018, 08:54 AM   #53
analog_sa is offline analog_sa  Europe
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GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
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Originally Posted by Destroyer OS View Post
The odds that the Teflon isn't contributing 3HD and or exciting some frequencies by actings like short, are pretty remote if it sounds obviously audibly different.
This is the only point where we disagree. Care to put numbers on the "3HD" level?

Which is the signal that gets distorted? What are its parameters? It is obviously proportional to the load modulating the current draw, but what kind of amplitude do you expect when an amp is running at close to maximum power? What about at a really low power? Or if the load is not an amp but a source, as these caps are equally audible supplying power to sources? What if the load is a constant current draw amp - would you expect the caps to suddenly become transparent?

Once you put the numbers you will realise that the amplitude of the signal which may get distorted is tiny, the distortion products of the caps at best are -140db below this tiny amplitude and they get further reduced by all the downstream PS filtering and by the device psrr. So, how much water can this theory hold?
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Old 9th August 2018, 04:18 PM   #54
Destroyer OS is offline Destroyer OS  United States
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GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
It's not a theory that they sound different. Many reviewers and customers have posted about it. They aren't series, or in the path of the signal, so I don't follow your "transparent" comment.

The frequencies that are affected are highly parasitic and don't play by the rules that 50/60hz does.
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Old 12th August 2018, 04:01 PM   #55
drkingweeb is offline drkingweeb  United States
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Default cases

will there be a gb for enclosures?
thanks,
drmike
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Old 12th August 2018, 05:25 PM   #56
Destroyer OS is offline Destroyer OS  United States
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GB: Round #3; Fo-Felix & GB #1 AC Receptacle Enclosure
There is one going on already...

Right now I have ordered one that I can assemble and show off. It's taking awhile for him to get to it. If I don't hear from the guy doing the CNC I'll bug him after another week or so. I'm hoping that will when people see it, that'll be the convincing point.
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