Expensive vs. Moderately Priced.

[gmgraves]

As described above. Here is a pic showing what and where the cap and resistor go:

 

[ATTACH=CONFIG]10483[/ATTACH]

 

 

So, this snubbing circuit goes on the secondary side of the mains transformer? Interesting. Are those values (330 Ohms, .022µfd) universal? I would think that they would depend on the inductance of the transformer. Is that not true?

[mayhem13]

Less than $10, that's for sure. John tested the ringing of dozens of transformers and found that critical damping (neither over or under damping) is not necessary. A little overdamping is fine. The values he came up, that work well for most every power transformer were 0.022uF and 330 ohms. Solder those (in series together) in parallel across the secondaries of your power transformers and you are done. VERY effective!

 

Where do you get this stuff from? We are talking transformer harmonics rights?.....like odd order from 1 to 11 that may or may not be audible in an analog circuit.

[Superdad]

So, this snubbing circuit goes on the secondary side of the mains transformer? Interesting. Are those values (330 Ohms, .022µfd) universal? I would think that they would depend on the inductance of the transformer. Is that not true?

 

Yes, on the secondary side as pictured. Yes, the values are almost universal. The resistor does all the work. Please read John's post here:

http://www.computeraudiophile.com/f10-music-servers/good-linear-power-supply-unit-s-computer-audiophile-pocket-server-music-player-wont-break-bank-17336/index12.html#post280401

 

Some people like to go to greater lengths to hit "critical damping," but it real is not necessary as there is no harm in overdamping the transformer (within reason--don't put a 24 ohm resistor there!).

[gmgraves]

Yes, on the secondary side as pictured. Yes, the values are almost universal. The resistor does all the work. Please read John's post here:

http://www.computeraudiophile.com/f10-music-servers/good-linear-power-supply-unit-s-computer-audiophile-pocket-server-music-player-wont-break-bank-17336/index12.html#post280401

 

Some people like to go to greater lengths to hit "critical damping," but it real is not necessary as there is no harm in oversampling the transformer (within reason--don't put a 24 ohm resistor there!).

 

 

Yes, I see. Thanks for the reference.

[Superdad]

Where do you get this stuff from? We are talking transformer harmonics rights?.....like odd order from 1 to 11 that may or may not be audible in an analog circuit.

 

No, we are talking about very high frequency resonances--from 75KHz to around 750KHz.

[sandyk]

Alex C

You may wish to edit your post to "over-damping", not "oversampling"

 

Kind Regards

Alex

[Jud]

No, because DBTs are designed to eliminate expectational bias.

 

Yes, where there is a true choice between two or more alternatives. Choosing "no difference" in every case eliminates any true alternatives - not an "ABX" test, but in effect an "AAA" test.

 

In other words, expectation bias cannot be eliminated if the answer that accords with the bias is not capable of being shown to be false.

 

Experimental setups do exist which can eliminate by design the expectation that one will find no difference, but the setup you described (some CDs were treated, some not, people couldn't tell a difference) is not one of them.

[Le Concombre Masqué]

As described above. Here is a pic showing what and where the cap and resistor go:

 

[ATTACH=CONFIG]10483[/ATTACH]

thank you Alex !