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Old 21st June 2018, 09:48 PM   #261
Cornan is offline Cornan  Sweden
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That’s it? No reasons why common mode chokes are better than balanced transformers?
Edit! BTW. I am NOT trying to trap you into
a corner. Not my style. I am just trying to get the things straight!
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Old 22nd June 2018, 07:41 AM   #262
peranders is offline peranders  Sweden
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What is balanced in this context? Picture?
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Old 22nd June 2018, 08:11 AM   #263
Cornan is offline Cornan  Sweden
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What is balanced in this context? Picture?
Here is a picture of my feeder supply for my dual LS-HPULN which are connected to a balanced isolation transformer.
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Old 22nd June 2018, 08:17 AM   #264
Cornan is offline Cornan  Sweden
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What is balanced in this context? Picture?
Here is an internal picture of my feeder supply for my dual LS-HPULN which is connected to a balanced isolation transformer.


7FB4D22E-E496-426D-89DF-D2CDCE337A27.jpeg
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Old 23rd June 2018, 04:14 PM   #265
sq225917 is offline sq225917  United Kingdom
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That’s it? No reasons why common mode chokes are better than balanced transformers?
There's no point me repeatedly stating my opinion. You appear to be trying to make it a binary choice of one being better than the other, which simply isn't the case. If you have common mode noise across the AC then a common mode choke is an ideal way to remove it. If you have another issue with your mains, perhaps DC, then a DC filter/trap is the way to go, likewise other situations may exist where a balanced transformer is beneficial.

However I'm looking to power my Brooklyn which needs only a single DC rail and I have no DC on my mains, so...
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Old 23rd June 2018, 04:16 PM   #266
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SO you have a transformer with a centre tapped secondary earth at 0V and that feeds the AC input of another?
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Old 23rd June 2018, 04:31 PM   #267
Cornan is offline Cornan  Sweden
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Originally Posted by sq225917 View Post
There's no point me repeatedly stating my opinion. You appear to be trying to make it a binary choice of one being better than the other, which simply isn't the case. If you have common mode noise across the AC then a common mode choke is an ideal way to remove it. If you have another issue with your mains, perhaps DC, then a DC filter/trap is the way to go, likewise other situations may exist where a balanced transformer is beneficial.

However I'm looking to power my Brooklyn which needs only a single DC rail and I have no DC on my mains, so...
No, I am not trying to say that a balanced transformer is better than a common mode choke. Sorry if it came out that way! I am interested to know why a choke is better since in theory a balanced transformer cancel out common mode noise by design? Reality may not be the case but it surely sounds better than any other thing that I have tried. I’m just curious if a common mode choke would be beneficial on a balanced transformer?
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Old 23rd June 2018, 04:33 PM   #268
Cornan is offline Cornan  Sweden
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SO you have a transformer with a centre tapped secondary earth at 0V and that feeds the AC input of another?
Yes, plus a DC blocker trap filter pre the balanced IT.
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Old 25th June 2018, 06:28 PM   #269
peranders is offline peranders  Sweden
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Just wondering, what is the advantage of a balanced 230 VAC compared to a non-balanced except for "it sounds better"? Any measurements which proves a point?
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Old 25th June 2018, 06:42 PM   #270
Cornan is offline Cornan  Sweden
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Just wondering, what is the advantage of a balanced 230 VAC compared to a non-balanced except for "it sounds better"? Any measurements which proves a point?
Sorry, but no! I only use my own ears for evaluations. I own four different IT’s and find the balanced one (with IEC input connected to the Schuko output via chassi ground and bypassing the transformer) better by quite a lot than the other three IT’s in my setup. The balanced snd floating 230-12VAC toroidal transformer concured my flaoting SMPS as a feeder supply for dual 5A LT3045 (LS-HPULN) powering Brooklyn DAC. However, not a huge difference in SQ terms according to these ears!
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